KUNR [120358]: Preliminary Local Storm Report...summary

NWUS53 KUNR 120358
LSRUNR

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE RAPID CITY SD
958 PM MDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0110 PM HAIL 1 E CUSTER 43.77N 103.58W
08/11/2008 E0.88 INCH CUSTER SD PUBLIC

HAIL RANGED FROM PEA SIZE TO NICKEL SIZE. HAIL COVER
DECK.

0257 PM TSTM WND GST 1 N IDEAL 43.56N 99.90W
08/11/2008 E60.00 MPH TRIPP SD PUBLIC

ALSO HAD PEA HAIL.

0310 PM HAIL 2 NNW PINE RIDGE 43.05N 102.57W
08/11/2008 M0.88 INCH SHANNON SD LAW ENFORCEMENT

0310 PM HAIL 1 S OGLALA 43.17N 102.73W
08/11/2008 M1.75 INCH SHANNON SD CO-OP OBSERVER

0410 PM HAIL 3 NE MILLBORO 43.10N 99.92W
08/11/2008 E1.50 INCH TRIPP SD PUBLIC

&&

$$

KCLARK

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KUNR [120357]: Preliminary Local Storm Report...corrected

NWUS53 KUNR 120357
LSRUNR

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE RAPID CITY SD
956 PM MDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0310 PM HAIL 1 S OGLALA 43.17N 102.73W
08/11/2008 M1.75 INCH SHANNON SD CO-OP OBSERVER

&&

$$

KCLARK

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KFGF [120342]: Preliminary Local Storm Report

NWUS53 KFGF 120342
LSRFGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
1042 PM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1000 PM FLASH FLOOD WAHPETON 46.27N 96.61W
08/11/2008 RICHLAND ND TRAINED SPOTTER

WATER 2 TO 3 FEET DEEP IN THE STREETS OF WAHPETON WITH
WATER UP TO FRONT LAWNS. BASEMENT DRAINS BEING PLUGGED.
RAINFALL 2.75 INCHES IN TWO HOURS.

1042 PM FLASH FLOOD WAHPETON 46.27N 96.61W
08/11/2008 RICHLAND ND LAW ENFORCEMENT

NO TRAVEL ADVISED BY CITY OFFICIALS DUE TO FLOODING

&&

$$

DRIDDLE

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WATCHES: Severe Thunderstorm Watch - Number 822

WWUS20 KWNS 120340
SEL2
SPC WW 120340
COZ000-KSZ000-NEZ000-120500-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 822
NWS STORM PREDICTION CENTER NORMAN OK
1040 PM CDT MON AUG 11 2008

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 822 ISSUED AT 800 PM CDT FOR PORTIONS OF

COLORADO
KANSAS
NEBRASKA

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KAMA [120306]: Preliminary Local Storm Report...summary

NWUS54 KAMA 120306
LSRAMA

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE AMARILLO TX
1006 PM CDT MON AUG 11 2008

..TIME.. ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE.. ....MAG.... ..COUNTY LOCATION.. ST.. ...SOURCE....
..REMARKS..

0410 PM TSTM WND GST 3 SSE BOISE CITY 36.69N 102.49W
08/11/2008 M66 MPH CIMARRON OK MESONET

0415 PM TSTM WND GST 3 SSE BOISE CITY 36.69N 102.49W
08/11/2008 M61 MPH CIMARRON OK MESONET

0600 PM TSTM WND GST 1 SE DALHART 36.05N 102.50W
08/11/2008 E60 MPH HARTLEY TX TRAINED SPOTTER

&&

EVENT NUMBER AMA0800806 AMA0800804 AMA0800805

$$

KJS

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WATCHES: Severe Thunderstorm Watch - Number 821

WWUS20 KWNS 120303
SEL1
SPC WW 120303
NEZ000-SDZ000-120300-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH - NUMBER 821
NWS STORM PREDICTION CENTER NORMAN OK
1003 PM CDT MON AUG 11 2008

THE NWS STORM PREDICTION CENTER HAS CANCELLED
SEVERE THUNDERSTORM WATCH NUMBER 821 ISSUED AT 300 PM CDT FOR PORTIONS OF

NEBRASKA
SOUTH DAKOTA

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KGID [120301]: Preliminary Local Storm Report

NWUS53 KGID 120301
LSRGID

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1001 PM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1000 PM HAIL 6 N GOTHENBURG 41.02N 100.16W
08/11/2008 E0.75 INCH DAWSON NE EMERGENCY MNGR

HAIL UP TO AROUND DIME SIZE AND 40 MPH WINDS

&&

$$

PFANNKUCH

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MESO: Mesoscale Discussion 2076

ACUS11 KWNS 120258
SWOMCD
SPC MCD 120258
KSZ000-NEZ000-COZ000-120400-

MESOSCALE DISCUSSION 2076
NWS STORM PREDICTION CENTER NORMAN OK
0958 PM CDT MON AUG 11 2008

AREAS AFFECTED...NWRN KS...NERN CO

CONCERNING...SEVERE THUNDERSTORM WATCH 822...

VALID 120258Z - 120400Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 822
CONTINUES.

OUTFLOW HAS SURGED A FEW MILES AHEAD OF SLOWLY WEAKENING
THUNDERSTORMS AS THEY MOVE SEWD ACROSS WW822. THIS ACTIVITY WILL
SOON EXIT THE WATCH BUT WITH CONVECTION NOT PARTICULARLY
INTENSE...AND NOT EXPECTED TO INCREASE IN INTENSITY...WW WILL NOT BE
REISSUED DOWNSTREAM.

..DARROW.. 08/12/2008

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...GID...LBF...DDC...GLD...PUB...BOU...

39550314 39560205 40340203 40330017 38690015 38690112
38260110 38250204 38610205 38600317

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KOKX [120249]: Preliminary Local Storm Report

NWUS51 KOKX 120249
LSROKX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE UPTON NY
1049 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0750 PM WATER SPOUT 5 NE MOUNT SINAI 40.99N 72.95W
08/11/2008 ANZ330 NY NWS EMPLOYEE

0924 PM HAIL SETAUKET-EAST SETAUKET 40.93N 73.10W
08/11/2008 E0.75 INCH SUFFOLK NY PUBLIC

&&

$$

GOODMAN

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KOKX [111756]: Preliminary Local Storm Report...corrected

NWUS51 KOKX 111756
LSROKX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE UPTON NY
156 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1009 AM HAIL UNION 40.70N 74.27W
08/11/2008 E0.75 INCH UNION NJ TRAINED SPOTTER

PENNY SIZE HAIL REPORTED AT KEAN UNIVERSITY.

1027 AM FLOOD ELIZABETH 40.67N 74.19W
08/11/2008 UNION NJ BROADCAST MEDIA

SOUTH ELMORA AVENUE AT FAY AVENUE CLOSED DUE TO FLOODING.

1027 AM HAIL 3 ENE HOBOKEN 40.76N 73.98W
08/11/2008 E0.75 INCH NEW YORK (MANHATTA NY PUBLIC

PENNY SIZED HAIL REPORTED AT 6TH AVENUE AND 49TH STREET.

1027 AM FLOOD ELIZABETH 40.67N 74.19W
08/11/2008 UNION NJ BROADCAST MEDIA

NORTH AVENUE AT PENNSYLVANIA AVENUE CLOSED DUE TO
FLOODING.

1045 AM HAIL FLUSHING 40.77N 73.84W
08/11/2008 E0.75 INCH QUEENS NY TRAINED SPOTTER

PENNY SIZE HAIL.

1103 AM FLOOD EAST RUTHERFORD 40.82N 74.08W
08/11/2008 BERGEN NJ BROADCAST MEDIA

ROUTE 17 SOUTHBOUND AT PATERSON AVENUE CLOSED DUE TO
FLOODING.

1106 AM HAIL LAGUARDIA AIRPORT 40.79N 73.87W
08/11/2008 M0.75 INCH QUEENS NY OFFICIAL NWS OBS

PENNY SIZED HAIL REPORTED BY AIRPORT OBSERVER

1106 AM MARINE TSTM WIND LAGUARDIA AIRPORT 40.79N 73.87W
08/11/2008 M48.00 MPH QUEENS NY OFFICIAL NWS OBS

42 KNOT WIND GUST MEASURED AT ASOS.

1115 AM FLASH FLOOD FORT LEE 40.85N 73.97W
08/11/2008 BERGEN NJ TRAINED SPOTTER

OEM CLOSED ANDERSON...FLETCHER AND STILLWELL AVENUE DUE
TO FLASH FLOODING.

1130 AM HAIL FORT LEE 40.85N 73.97W
08/11/2008 E0.75 INCH BERGEN NJ TRAINED SPOTTER

PENNY SIZE HAIL.

1145 AM HAIL NEW WINDSOR 41.47N 74.03W
08/11/2008 E0.75 INCH ORANGE NY TRAINED SPOTTER

PENNY SIZE HAIL.

1147 AM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.75 INCH NASSAU NY TRAINED SPOTTER

PENNY SIZE HAIL.

1147 AM HAIL SEA CLIFF 40.85N 73.64W
08/11/2008 E0.75 INCH NASSAU NY TRAINED SPOTTER

PENNY SIZE HAIL.

1149 AM TSTM WND DMG 5 SE EAST TREMONT 40.79N 73.81W
08/11/2008 QUEENS NY BROADCAST MEDIA

CROSS ISLAND SOUTHBOUND AT BAYSIDE MARINA...TWO LANES
BLOCKED DUE TO LARGE DOWNED TREE LIMB.

1149 AM FLOOD 4 SSW HAVERSTRAW 41.13N 73.99W
08/11/2008 ROCKLAND NY PUBLIC

ROCKLAND LAKE ROAD IMPASSABLE.

1151 AM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.88 INCH NASSAU NY LAW ENFORCEMENT

NICKEL SIZE HAIL.

1151 AM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.88 INCH NASSAU NY LAW ENFORCEMENT

NICKEL SIZE HAIL.

1151 AM FLASH FLOOD 5 SW EAST TREMONT 40.79N 73.93W
08/11/2008 NEW YORK (MANHATTA NY BROADCAST MEDIA

FDR DRIVE/HARLEM RIVER DRIVE AT 116TH STREET...TWO LANES
BLOCKED DUE TO FLOODING.

1151 AM FLASH FLOOD 4 ENE HOBOKEN 40.77N 73.96W
08/11/2008 NEW YORK (MANHATTA NY BROADCAST MEDIA

FDR DRIVE/HARLEM RIVER DRIVE...TWO LANES BLOCKED AFTER
72ND STREET DUE TO FLOODING. DELAYS BACK INTO THE 50S.

1205 PM HAIL NEWBURGH 41.50N 74.02W
08/11/2008 E1.75 INCH ORANGE NY TRAINED SPOTTER

GOLF BALL SIZE HAIL.

1224 PM HAIL GLEN COVE 40.87N 73.64W
08/11/2008 E1.00 INCH NASSAU NY TRAINED SPOTTER

QUARTER SIZE HAIL.

1233 PM FLASH FLOOD BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

JEFFERSON AND BAYVILLE ROAD FLOODED. LUDLUM ROAD AND WEST
SHORE ROAD FLOODED.

1233 PM TSTM WND DMG BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

BRANCHES DOWN ON WEST SHORE ROAD.

1244 PM FLASH FLOOD BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

SEEKS ROAD IS UNDERWATER. COMPLETELY IMPASSABLE.

0100 PM HAIL SETAUKET-EAST SETAUKET 40.93N 73.10W
08/11/2008 E1.25 INCH SUFFOLK NY NWS EMPLOYEE

1.25 INCH HAIL COVERING GROUND AT SAINT GEORGES GOLF
COURSE.

&&

$$

JP

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KALY [111752]: Preliminary Local Storm Report

NWUS51 KALY 111752
LSRALY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
151 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0148 PM HAIL EAST SCHODACK 42.56N 73.63W
08/11/2008 E0.88 INCH RENSSELAER NY PUBLIC

&&

$$

ROKEEFE

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KOKX [111742]: Preliminary Local Storm Report...corrected

NWUS51 KOKX 111742
LSROKX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE UPTON NY
142 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1009 AM HAIL UNION 40.70N 74.27W
08/11/2008 E0.75 INCH UNION NJ TRAINED SPOTTER

PENNY SIZE HAIL REPORTED AT KEAN UNIVERSITY.

1027 AM HAIL 3 ENE HOBOKEN 40.76N 73.98W
08/11/2008 E0.75 INCH NEW YORK (MANHATTA NY PUBLIC

PENNY SIZED HAIL REPORTED AT 6TH AVENUE AND 49TH STREET.

1027 AM FLOOD ELIZABETH 40.67N 74.19W
08/11/2008 UNION NJ BROADCAST MEDIA

SOUTH ELMORA AVENUE AT FAY AVENUE CLOSED DUE TO FLOODING.

1027 AM FLOOD ELIZABETH 40.67N 74.19W
08/11/2008 UNION NJ BROADCAST MEDIA

NORTH AVENUE AT PENNSYLVANIA AVENUE CLOSED DUE TO
FLOODING.

1045 AM HAIL FLUSHING 40.77N 73.84W
08/11/2008 E0.75 INCH QUEENS NY TRAINED SPOTTER

PENNY SIZE HAIL.

1103 AM FLOOD EAST RUTHERFORD 40.82N 74.08W
08/11/2008 BERGEN NJ BROADCAST MEDIA

ROUTE 17 SOUTHBOUND AT PATERSON AVENUE CLOSED DUE TO
FLOODING.

1106 AM MARINE TSTM WIND LAGUARDIA AIRPORT 40.79N 73.87W
08/11/2008 M48.00 MPH QUEENS NY OFFICIAL NWS OBS

42 KNOT WIND GUST MEASURED AT ASOS.

1106 AM HAIL LAGUARDIA AIRPORT 40.79N 73.87W
08/11/2008 M0.75 INCH QUEENS NY OFFICIAL NWS OBS

PENNY SIZED HAIL REPORTED BY AIRPORT OBSERVER

1115 AM FLASH FLOOD FORT LEE 40.85N 73.97W
08/11/2008 BERGEN NJ TRAINED SPOTTER

OEM CLOSED ANDERSON...FLETCHER AND STILLWELL AVENUE DUE
TO FLASH FLOODING.

1130 AM HAIL FORT LEE 40.85N 73.97W
08/11/2008 E0.75 INCH BERGEN NJ TRAINED SPOTTER

PENNY SIZE HAIL.

1145 AM HAIL NEW WINDSOR 41.47N 74.03W
08/11/2008 E0.75 INCH ORANGE NY TRAINED SPOTTER

PENNY SIZE HAIL.

1147 AM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.75 INCH NASSAU NY TRAINED SPOTTER

PENNY SIZE HAIL.

1147 AM HAIL SEA CLIFF 40.85N 73.64W
08/11/2008 E0.75 INCH NASSAU NY TRAINED SPOTTER

PENNY SIZE HAIL.

1149 AM TSTM WND DMG 5 SE EAST TREMONT 40.79N 73.81W
08/11/2008 QUEENS NY BROADCAST MEDIA

CROSS ISLAND SOUTHBOUND AT BAYSIDE MARINA...TWO LANES
BLOCKED DUE TO LARGE DOWNED TREE LIMB.

1149 AM FLOOD 4 SSW HAVERSTRAW 41.13N 73.99W
08/11/2008 ROCKLAND NY PUBLIC

ROCKLAND LAKE ROAD IMPASSABLE.

1151 AM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.88 INCH NASSAU NY LAW ENFORCEMENT

NICKEL SIZE HAIL.

1151 AM FLASH FLOOD 5 SW EAST TREMONT 40.79N 73.93W
08/11/2008 NEW YORK (MANHATTA NY BROADCAST MEDIA

FDR DRIVE/HARLEM RIVER DRIVE AT 116TH STREET...TWO LANES
BLOCKED DUE TO FLOODING.

1151 AM FLASH FLOOD 4 ENE HOBOKEN 40.77N 73.96W
08/11/2008 NEW YORK (MANHATTA NY BROADCAST MEDIA

FDR DRIVE/HARLEM RIVER DRIVE...TWO LANES BLOCKED AFTER
72ND STREET DUE TO FLOODING. DELAYS BACK INTO THE 50S.

1200 PM HAIL SETAUKET-EAST SETAUKET 40.93N 73.10W
08/11/2008 E1.25 INCH SUFFOLK NY NWS EMPLOYEE

1.25 INCH HAIL COVERING GROUND AT SAINT GEORGES GOLF
COURSE.

1205 PM HAIL NEWBURGH 41.50N 74.02W
08/11/2008 E1.75 INCH ORANGE NY TRAINED SPOTTER

GOLF BALL SIZE HAIL.

1224 PM HAIL GLEN COVE 40.87N 73.64W
08/11/2008 E1.00 INCH NASSAU NY TRAINED SPOTTER

QUARTER SIZE HAIL.

1233 PM FLASH FLOOD BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

JEFFERSON AND BAYVILLE ROAD FLOODED. LUDLUM ROAD AND WEST
SHORE ROAD FLOODED.

1233 PM TSTM WND DMG BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

BRANCHES DOWN ON WEST SHORE ROAD.

1244 PM FLASH FLOOD BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

SEEKS ROAD IS UNDERWATER. COMPLETELY IMPASSABLE.

0100 PM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.88 INCH NASSAU NY LAW ENFORCEMENT

NICKEL SIZE HAIL.

&&

$$

JP

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 111740
SWODY2
SPC AC 111738

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1238 PM CDT MON AUG 11 2008

VALID 121200Z - 131200Z

...THERE IS A SLGT RISK OF SVR TSTMS N TX TO NWRN AL...

...SYNOPSIS...
MID-UPPER LEVEL SHORTWAVE TROUGHS NOW OVER NRN QUE ARE FCST TO DIG
SWD WITH CLOSED LOW DEVELOPING OVER SRN QUE BY ABOUT 13/06Z. AS
THAT OCCURS...UPPER LOW NOW INVOF NYC IS FCST TO MOVE EWD ACROSS SRN
NEW ENGLAND...DEVOLVE INTO OPEN-WAVE TROUGH...THEN EJECT NEWD ACROSS
NOVA SCOTIA DAY-2. UPPER LOW -- NOW EVIDENT IN MOISTURE CHANNEL
IMAGERY OVER SWRN AB -- SHOULD MOVE ESEWD THEN EWD ACROSS SASK THIS
PERIOD. GEN NWLY-WNWLY FLOW PATTERN DOMINATES MID-UPPER LEVELS
ACROSS MUCH OF CONUS S OF THOSE LOWS. THIS BELT WILL CUT THROUGH
MEAN RIDGE NOW OVER UPPER MS VALLEY AND MB...RESULTING IN CLOSED
UPPER HIGH OVER NERN MB. SHORTWAVE TROUGH -- NOW PIVOTING ESEWD
PERIOD. NAM FCST OF SMALL/CLOSED LOW OVER MN BY 12/18Z IS
FAR-OUTLYING/LOW-CONFIDENCE PROG...NOT SUPPORTED BY LATEST
SPECTRAL...ECMWF...NGM OR GREAT MAJORITY OF SREF MEMBERS.

AT SFC...DIFFUSE AND CONVECTIVELY MODULATED FRONTAL ZONE SHOULD
LINGER FROM E GULF COASTAL PLAIN WNWWD TOWARD NRN TX.
WEAK/FRONTAL-WAVE LOW -- EVIDENT ATTM OVER RED RIVER REGION NNE OF
MCV NEAR MWL -- IS EXPECTED TO MOVE EWD ALONG FRONTAL ZONE FROM
ARKLATEX REGION ACROSS LOWER MS VALLEY. WEAK SFC LOW AND
FRONTOGENESIS MAY OCCUR OVER MN IN IMMEDIATE ADVANCE OF SHORTWAVE
TROUGH ALOFT...WITH BOUNDARY EXTENDING SWWD TOWARD ERN KS.

...NE TX TO MID SOUTH...
SCATTERED-NUMEROUS TSTMS ARE EXPECTED TO DEVELOP NEAR AND E OF SFC
LOW...AND E OF MCV NOW OBSERVED ON VIS IMAGERY OVER N-CENTRAL TX.
STG-SVR GUSTS ARE POSSIBLE...ALONG WITH MRGL SVR HAIL AND PERHAPS A
TORNADO OR TWO. POTENTIAL EXISTS THROUGHOUT PERIOD -- SPREADING W-E
-- BUT SHOULD BE MAXIMIZED DURING AFTERNOON/EVENING AND INVOF
DIFFUSE FRONTAL ZONE...WHERE COMBINATION OF DIURNALLY-BOOSTED
BUOYANCY...LOW LEVEL CONVERGENCE AND SRH EACH ARE EXPECTED TO BE
MAXIMIZED. FCST SOUNDINGS SUGGEST MODEST MID-UPPER LEVEL
FLOW...WEAKENING WITH SWD EXTENT...BUT ADEQUATE TO SUPPORT 30-40 KT
EFFECTIVE SHEAR. ENLARGED LOW LEVEL HODOGRAPHS ARE EXPECTED IN
FRONTAL ZONE WHERE SFC WINDS WILL BE BACKED...CONTRIBUTING TO
POTENTIAL FOR BRIEF/HEAVY-PRECIP SUPERCELL AND BOWING STRUCTURES.

...CENTRAL HIGH PLAINS...
WIDELY SCATTERED TSTMS IN CLUSTERS MAY DEVELOP ACROSS ERN PORTIONS
CO/MN AND PERHAPS SERN WY AND NEB PANHANDLE DURING AFTERNOON...IN
FAVORABLY MOIST ENVIRONMENT MADE INCREASINGLY UNSTABLE THROUGH
DIURNAL HEATING. ALTHOUGH LOW-MIDLEVEL WINDS WILL BE WEAK...STG
DIRECTIONAL SHEAR AND UPPER FLOW WILL SUPPORT SOME STORM
ORGANIZATION...WITH STG-SVR GUSTS POSSIBLE INTO WELL-MIXED SUBCLOUD
LAYER. WEAKER AND MORE NLY AMBIENT FLOW COMPONENT...COMBINED WITH
POTENTIAL FOR PROPAGATION INTO STRONGER
MOISTURE/BUOYANCY...INDICATES CLUSTER OF CONVECTION MAY MOVE SWD
ACROSS ERN NM DURING AFTERNOON/EVENING HOURS. ACTIVITY MAY PRODUCE
STG-SVR GUSTS...ESPECIALLY OVER ERN PORTION WHERE HOTTER AND MORE
DEEPLY MIXED BOUNDARY LAYER WILL CHARACTERIZE PRE-STORM AIR MASS.

...UPPER MS VALLEY TO CENTRAL LOW PLAINS...
SCATTERED TSTMS MAY DEVELOP IN NNE-SSW ALIGNED BAND CLOSE TO FRONTAL
ZONE AS ASSOCIATED LOW LEVEL CONVERGENCE COMBINES WITH
RICH/EVAPOTRANSPIRATIVELY-AIDED MOIST LAYER AND STG AFTERNOON
HEATING. A FEW ORGANIZED MULTICELLS ARE POSSIBLE IN KINEMATIC
ENVIRONMENT CHARACTERIZED BY STG VEERING WITH HEIGHT UNDER NW FLOW
ALOFT...BUT WEAK LOW-MIDLEVEL WINDS. ISOLATED HAIL/GUSTS NEAR SVR
LEVELS ARE POSSIBLE.

..EDWARDS.. 08/11/2008

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KOKX [111736]: Preliminary Local Storm Report

NWUS51 KOKX 111736
LSROKX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE UPTON NY
130 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1009 AM HAIL UNION 40.70N 74.27W
08/11/2008 E0.75 INCH UNION NJ TRAINED SPOTTER

PENNY SIZE HAIL REPORTED AT KEAN UNIVERSITY.

1045 AM HAIL FLUSHING 40.77N 73.84W
08/11/2008 E0.75 INCH QUEENS NY TRAINED SPOTTER

PENNY SIZE HAIL.

1115 AM FLASH FLOOD FORT LEE 40.85N 73.97W
08/11/2008 BERGEN NJ TRAINED SPOTTER

OEM CLOSED ANDERSON...FLETCHER AND STILLWELL AVENUE DUE
TO FLASH FLOODING.

1130 AM HAIL FORT LEE 40.85N 73.97W
08/11/2008 E0.75 INCH BERGEN NJ TRAINED SPOTTER

PENNY SIZE HAIL.

1145 AM HAIL NEW WINDSOR 41.47N 74.03W
08/11/2008 E0.75 INCH ORANGE NY TRAINED SPOTTER

PENNY SIZE HAIL.

1147 AM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.75 INCH NASSAU NY TRAINED SPOTTER

PENNY SIZE HAIL.

1147 AM HAIL SEA CLIFF 40.85N 73.64W
08/11/2008 E0.75 INCH NASSAU NY TRAINED SPOTTER

PENNY SIZE HAIL.

1149 AM TSTM WND DMG 5 SE EAST TREMONT 40.79N 73.81W
08/11/2008 QUEENS NY BROADCAST MEDIA

CROSS ISLAND SOUTHBOUND AT BAYSIDE MARINA...TWO LANES
BLOCKED DUE TO LARGE DOWNED TREE LIMB.

1149 AM FLOOD 4 SSW HAVERSTRAW 41.13N 73.99W
08/11/2008 ROCKLAND NY PUBLIC

ROCKLAND LAKE ROAD IMPASSABLE.

1151 AM FLASH FLOOD 5 SW EAST TREMONT 40.79N 73.93W
08/11/2008 NEW YORK (MANHATTA NY BROADCAST MEDIA

FDR DRIVE/HARLEM RIVER DRIVE AT 116TH STREET...TWO LANES
BLOCKED DUE TO FLOODING.

1151 AM FLASH FLOOD 4 ENE HOBOKEN 40.77N 73.96W
08/11/2008 NEW YORK (MANHATTA NY BROADCAST MEDIA

FDR DRIVE/HARLEM RIVER DRIVE...TWO LANES BLOCKED AFTER
72ND STREET DUE TO FLOODING. DELAYS BACK INTO THE 50S.

1151 AM HAIL PORT WASHINGTON 40.83N 73.68W
08/11/2008 E0.88 INCH NASSAU NY LAW ENFORCEMENT

NICKEL SIZE HAIL.

1200 PM HAIL SETAUKET-EAST SETAUKET 40.93N 73.10W
08/11/2008 E1.25 INCH SUFFOLK NY NWS EMPLOYEE

1.25 INCH HAIL COVERING GROUND AT SAINT GEORGES GOLF
COURSE.

1205 PM HAIL NEWBURGH 41.50N 74.02W
08/11/2008 E1.75 INCH ORANGE NY TRAINED SPOTTER

GOLF BALL SIZE HAIL.

1224 PM HAIL GLEN COVE 40.87N 73.64W
08/11/2008 E1.00 INCH NASSAU NY TRAINED SPOTTER

QUARTER SIZE HAIL.

1233 PM FLASH FLOOD BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

JEFFERSON AND BAYVILLE ROAD FLOODED. LUDLUM ROAD AND WEST
SHORE ROAD FLOODED.

1233 PM TSTM WND DMG BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

BRANCHES DOWN ON WEST SHORE ROAD.

1244 PM FLASH FLOOD BAYVILLE 40.91N 73.56W
08/11/2008 NASSAU NY TRAINED SPOTTER

SEEKS ROAD IS UNDERWATER. COMPLETELY IMPASSABLE.

&&

$$

JP

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KALY [111734]: Preliminary Local Storm Report

NWUS51 KALY 111734
LSRALY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
134 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1245 PM HAIL WAPPINGERS FALLS 41.60N 73.92W
08/11/2008 E0.75 INCH DUTCHESS NY PUBLIC

&&

$$

ROKEEFE

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KPHI [111720]: Preliminary Local Storm Report

NWUS51 KPHI 111720
LSRPHI

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
120 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0830 AM HAIL PRINCETON 40.35N 74.66W
08/11/2008 E0.25 INCH MERCER NJ TRAINED SPOTTER

0848 AM HAIL WHITE HORSE 40.19N 74.70W
08/11/2008 E0.50 INCH MERCER NJ TRAINED SPOTTER

DIME SIZE HAIL IN HAMILTON TOWNSHIP.

0850 AM HAIL TRENTON 40.22N 74.76W
08/11/2008 E0.25 INCH MERCER NJ TRAINED SPOTTER

0902 AM HAIL 5 ESE READING 40.31N 75.84W
08/11/2008 E0.25 INCH BERKS PA TRAINED SPOTTER

HAIL OCCURRED IN EXETER TOWNSHIP.

0915 AM TSTM WND DMG WINDSOR 40.24N 74.58W
08/11/2008 MERCER NJ NWS EMPLOYEE

TREE LIMBS DOWN.

0953 AM HAIL WOODBRIDGE 40.55N 74.29W
08/11/2008 E0.25 INCH MIDDLESEX NJ TRAINED SPOTTER

1120 AM HAIL 2 SSE SCOTRUN 41.04N 75.31W
08/11/2008 E0.25 INCH MONROE PA TRAINED SPOTTER

HAIL OCCURRED IN TANNERSVILLE.

&&

$$

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KALY [111709]: Preliminary Local Storm Report

NWUS51 KALY 111709
LSRALY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
109 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0103 PM FLASH FLOOD GLEN 42.89N 74.35W
08/11/2008 MONTGOMERY NY LAW ENFORCEMENT

ROADS CLOSED...LOGTOWN RD...VAN EPPS.

&&

$$

ROKEEFE

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KTSA [111658]: Preliminary Local Storm Report

NWUS54 KTSA 111658
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1158 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0800 AM FLASH FLOOD HANNA 35.21N 95.89W
08/11/2008 MCINTOSH OK EMERGENCY MNGR

SOME FLOODING OF COUNTY ROADS ACROSS SOUTHEAST PORTION OF
MCINTOSH COUNTY.

1000 AM FLASH FLOOD CROWDER 35.12N 95.67W
08/11/2008 PITTSBURG OK EMERGENCY MNGR

SEVERAL COUNTY ROADS FLOODED ACROSS THE NORTHERN PORTION
OF PITTSBURG COUNTY.

1100 AM FLASH FLOOD EUFAULA 35.29N 95.58W
08/11/2008 MCINTOSH OK EMERGENCY MNGR

MINOR FLOODING OF CITY STREETS DURING THE MORNING...NO
ROAD CLOSURES. WATER WAS RECEDING BY 1130 AM.

&&

$$

NMM

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KSHV [111651]: Preliminary Local Storm Report

NWUS54 KSHV 111651
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1150 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0815 AM FLASH FLOOD 3 WNW BROWNSVILLE-BAWCO 32.50N 92.22W
08/11/2008 OUACHITA LA NEWSPAPER

A DRIVER DROVE THROUGH FLOODWATERS ON NEW NATCHITOCHES
ROAD BETWEEN ESTATES ROAD AND VANCIL ROAD. THE VEHICLE
WAS SUBMERGED...BUT THE DRIVER WAS ABLE TO ESCAPE SAFELY.
TIME ESTIMATED BASED ON NEWS ARTICLE.

1000 AM FLASH FLOOD BROWNSVILLE-BAWCOMVILLE 32.48N 92.16W
08/11/2008 OUACHITA LA EMERGENCY MNGR

HIGHWAY 34 FLOODED NEAR BAWCOMVILLE

1000 AM FLASH FLOOD BROWNSVILLE-BAWCOMVILLE 32.48N 92.16W
08/11/2008 OUACHITA LA EMERGENCY MNGR

8-12 HOMES FLOODED WITH SEVERAL INCHES OF WATER IN THE
BAWCOMVILLE COMMUNITY

1130 AM FLASH FLOOD MONROE 32.51N 92.08W
08/11/2008 OUACHITA LA NEWSPAPER

MOTORISTS REPORTED FLOODING IN THE GARDEN DISTRICT ON 4TH
AND 5TH STREETS.

1130 AM FLASH FLOOD WEST MONROE 32.51N 92.15W
08/11/2008 OUACHITA LA LAW ENFORCEMENT

NUMEROUS ROADS REMAIN FLOODED ACROSS THE CENTRAL AND
WESTERN PARTS OF THE PARISH. SPORADIC ROAD CLOSURES
CONTINUE...INCLUDING CHEEKS AND CHENIERE STATION
ROADS...AND NEW NATCHITOCHES ROAD AND ESTATES NEAR VANCIL
ROAD.

&&

$$

15

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KALY [111638]: Preliminary Local Storm Report

NWUS51 KALY 111638
LSRALY

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBANY NY
1237 PM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1219 PM HAIL BEACON 41.50N 73.97W
08/11/2008 M0.88 INCH DUTCHESS NY TRAINED SPOTTER

&&

$$

ROKEEFE

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KGGW [111633]: Preliminary Local Storm Report...summary

NWUS55 KGGW 111633
LSRGGW

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GLASGOW MT
1033 AM MDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0331 PM HAIL 4 W CARLYLE 46.65N 104.16W
08/10/2008 E0.88 INCH WIBAUX MT TRAINED SPOTTER

0400 PM HAIL 8 N GLENTANA 48.96N 106.25W
08/10/2008 E0.75 INCH VALLEY MT TRAINED SPOTTER

0400 PM HAIL 7 ESE WIBAUX 46.95N 104.05W
08/10/2008 E1.00 INCH WIBAUX MT TRAINED SPOTTER

0405 PM HAIL 10 S OPHEIM 48.71N 106.41W
08/10/2008 E0.75 INCH VALLEY MT TRAINED SPOTTER

0510 PM HAIL 6 NE SAVAGE 47.51N 104.25W
08/10/2008 E1.25 INCH RICHLAND MT TRAINED SPOTTER

0522 PM HAIL 2 W CRANE 47.58N 104.30W
08/10/2008 E1.50 INCH RICHLAND MT TRAINED SPOTTER

0525 PM HAIL CRANE 47.58N 104.26W
08/10/2008 E0.75 INCH RICHLAND MT TRAINED SPOTTER

0544 PM TSTM WND GST 4 E WHITETAIL 48.90N 105.07W
08/10/2008 M70.00 MPH DANIELS MT TRAINED SPOTTER

0610 PM HAIL 2 E DALEVIEW 48.91N 104.89W
08/10/2008 E0.75 INCH SHERIDAN MT TRAINED SPOTTER

0630 PM TSTM WND GST 8 N RAYMOND 48.99N 104.58W
08/10/2008 E70.00 MPH SHERIDAN MT TRAINED SPOTTER

0715 PM HAIL 20 E BREDETTE 48.50N 104.86W
08/10/2008 E0.75 INCH ROOSEVELT MT TRAINED SPOTTER

0737 PM TSTM WND GST 12 W RESERVE 48.61N 104.72W
08/10/2008 E60.00 MPH SHERIDAN MT TRAINED SPOTTER

0830 PM HAIL 4 E DAGMAR 48.58N 104.11W
08/10/2008 E0.75 INCH SHERIDAN MT TRAINED SPOTTER

1005 PM HAIL 10 W OPHEIM 48.86N 106.63W
08/10/2008 E0.75 INCH VALLEY MT PUBLIC

PENNY TO PEA SIZE HAIL WITH A 1/2 INCH OF RAIN.

1240 AM HAIL 1 SE LARSLAN 48.57N 106.18W
08/11/2008 E0.75 INCH VALLEY MT PUBLIC

PEA TO PENNY SIZE HAIL LASTED 20 MINUTES WITH ESTIMATED
60 MPH WINDS CREATING 6 INCH HAILDRIFTS. CROPS WERE
DESTROYED. ALSO ESTIMATED 2.5 INCHES OF RAIN.

&&

$$

MCZ

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 111617
SWODY1
SPC AC 111614

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1114 AM CDT MON AUG 11 2008

VALID 111630Z - 121200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF SERN NY INTO ERN
PA/NRN NJ AND SRN NEW ENGLAND...

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PART OF THE NRN/CNTRL
PLAINS...

...NORTHEAST...
STRONG UPPER LOW AND ASSOCIATED MID LEVEL COLD POCKET WILL CONTINUE
TO SUPPORT SCATTERED LOW-TOPPED THUNDERSTORMS FROM PORTIONS OF THE
NRN MID ATLANTIC INTO PARTS OF NEW ENGLAND TODAY. THE COLD AIR
ALOFT WILL COMPENSATE FOR SEASONABLY COOL SURFACE TEMPERATURES AND
MAINTAIN MARGINAL INSTABILITY...ALONG WITH POTENTIAL FOR HAIL IN THE
STRONGER CORES. ACTIVITY WILL LIKELY REMAIN WEAKLY
FOCUSED/ORGANIZED GIVEN WEAK MID/UPPER LEVEL FLOW AND LIMITED LOW
LEVEL CONVERGENCE. HOWEVER WITH POCKETS OF HEATING /TEMPERED ACROSS
SRN NEW ENGLAND BY ONSHORE FLOW OFF LONG ISLAND SOUND AND THE
ATLANTIC/...A FEW STRONGER STORMS CAPABLE OF MARGINALLY SEVERE
HAIL/STRONG WIND GUSTS ARE EXPECTED TO CONTINUE INTO THE EARLY
EVENING.

...NRN/CENTRAL PLAINS...
MESSY MID/UPPER LEVEL PATTERN OVER THE NRN AND CENTRAL PLAINS AHEAD
OF WELL DEFINED SHORTWAVE TROUGH NOW MOVING ESEWD AWAY FROM THE NRN
ROCKIES. SEVERAL LOW AMPLITUDE IMPULSES ARE EVIDENT OVER THIS
REGION EARLY TODAY WHICH SHOULD MAINTAIN AREAS OF MOIST CONVECTION
THIS AFTERNOON...ESPECIALLY ACROSS THE ERN PART OF THE NRN PLAINS.
HOWEVER...WEAK LAPSE RATES WITHIN DEEP MOIST PLUME OVER MUCH OF THE
GREAT PLAINS...ALONG WITH LIMITED SURFACE HEATING...WILL TEND TO
INHIBIT MORE THAN ISOLATED SEVERE THUNDERSTORMS OVER THIS REGION.
EXCEPTION MAY BE OVER CENTRAL/SERN SD WHERE HIGH RES MODELS CONTINUE
TO INCREASE STORMS THIS AFTERNOON ALONG WRN EDGE OF LEADING LOW
CLOUD SHIELD. DESPITE THE WEAK LAPSE RATES/MODEST
INSTABILITY...FAIRLY STRONG LOW-DEEP LAYER SHEAR /LARGELY DRIVEN BY
LOOPING LOW LEVEL HODOGRAPHS INVOF 20-30 KT H85 JET/ MAY SUPPORT A
FEW LONGER-LIVED STORMS/SUPERCELLS.

ADDITIONAL AREA OF STRONG/SEVERE THUNDERSTORM DEVELOPMENT SHOULD
OCCUR IN CLOSER PROXIMITY TO THE HIGH PLAINS ON WRN FRINGE OF DEEP
MOIST PLUME...WHERE GREATER HEATING/STEEPER LAPSE RATES WILL BE
FOUND. IN ADDITION...WNWLY FLOW WILL STRENGTHEN THROUGH THE DAY
AHEAD OF APPROACHING NRN ROCKIES SHORTWAVE TROUGH. EXPECT
THUNDERSTORMS WILL INCREASE WITHIN AXIS OF MODERATE INSTABILITY FROM
THE CENTRAL HIGH PLAINS INTO SD DURING THE MID TO LATE AFTERNOON AS
CAP WEAKENS. FORECAST SOUNDINGS STILL ONLY YIELD MODERATE
MLCAPE/LAPSE RATES ACROSS THIS REGION...BUT STORMS SHOULD PERSIST
WITHIN SUFFICIENT SHEAR FOR ORGANIZATION INTO LINES/CLUSTERS
SPREADING PRIMARY THREAT OF DAMAGING WINDS SSEWD THROUGH THE
EVENING. ISOLATED LARGE HAIL WILL ALSO LIKELY ACCOMPANY THE
STRONGER STORMS.

...TX INTO THE LOWER MS RIVER VALLEY...
RESIDUAL MCS AND ASSOCIATED OUTFLOW BOUNDARIES/MCVS WILL MAINTAIN
SUFFICIENT FOCUS FOR NEW DEVELOPMENT TODAY...ESPECIALLY AS WARM
SECTOR BECOMES VERY WARM/UNSTABLE. AS HAS BEEN THE CASE THE PAST
FEW DAYS...ISOLATED STORMS WILL LIKELY BRIEFLY BECOME SEVERE
...ALTHOUGH OVERALL THREAT SHOULD REMAIN LOW.

..EVANS/SMITH.. 08/11/2008

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KSHV [111601]: Preliminary Local Storm Report

NWUS54 KSHV 111601
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
1101 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0740 AM FLASH FLOOD FARMERVILLE 32.77N 92.40W
08/11/2008 UNION LA EMERGENCY MNGR

LOCALIZED STREET FLOODING IN FARMERVILLE

&&

$$

15

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KOKX [111542]: Preliminary Local Storm Report

NWUS51 KOKX 111542
LSROKX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE UPTON NY
1141 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1027 AM FLOOD ELIZABETH 40.67N 74.19W
08/11/2008 UNION NJ BROADCAST MEDIA

NORTH AVENUE AT PENNSYLVANIA AVENUE CLOSED DUE TO
FLOODING.

1027 AM FLOOD ELIZABETH 40.67N 74.19W
08/11/2008 UNION NJ BROADCAST MEDIA

SOUTH ELMORA AVENUE AT FAY AVENUE CLOSED DUE TO FLOODING.

1027 AM HAIL 3 ENE HOBOKEN 40.76N 73.98W
08/11/2008 E0.75 INCH NEW YORK (MANHATTA NY PUBLIC

PENNY SIZED HAIL REPORTED AT 6TH AVENUE AND 49TH STREET.

1103 AM FLOOD EAST RUTHERFORD 40.82N 74.08W
08/11/2008 BERGEN NJ BROADCAST MEDIA

ROUTE 17 SOUTHBOUND AT PATERSON AVENUE CLOSED DUE TO
FLOODING.

1106 AM HAIL LAGUARDIA AIRPORT 40.79N 73.87W
08/11/2008 M0.75 INCH QUEENS NY OFFICIAL NWS OBS

PENNY SIZED HAIL REPORTED BY AIRPORT OBSERVER

1106 AM MARINE TSTM WIND LAGUARDIA AIRPORT 40.79N 73.87W
08/11/2008 M48.00 MPH QUEENS NY OFFICIAL NWS OBS

42 KNOT WIND GUST MEASURED AT ASOS.

&&

$$

JP

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KRAH [111540]: Preliminary Local Storm Report

NWUS52 KRAH 111540
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
1139 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0708 PM TSTM WND DMG 5 E HENDERSON 36.32N 78.32W
08/10/2008 VANCE NC DEPT OF HIGHWAYS

A TREE WAS BLOWN DOWN ONTO VICKSBORO ROAD. TIME OF EVENT
ESTIMATED BY RADAR.

0820 PM TSTM WND DMG 2 WSW GOLDSBORO 35.37N 78.01W
08/10/2008 WAYNE NC LAW ENFORCEMENT

SEVERAL POWER POLES WERE BLOWN DOWN NEAR HIGHWAY 117 AND
SOUTH GEORGE STREET. THE ROOF TO PATHWAY MINISTRIES
BUILDING WAS DAMAGED BUT THE EXTENT WAS UNKNOWN. SEVERAL
TREES WERE ALSO DOWNED ACROSS GOLDSBORO.

&&

$$

JFB

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MESO: Mesoscale Discussion 2070

ACUS11 KWNS 111457
SWOMCD
SPC MCD 111456
MAZ000-RIZ000-CTZ000-NYZ000-NJZ000-PAZ000-111700-

MESOSCALE DISCUSSION 2070
NWS STORM PREDICTION CENTER NORMAN OK
0956 AM CDT MON AUG 11 2008

AREAS AFFECTED...ERN PA/NJ/SERN NY/SRN NEW ENGLAND

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 111456Z - 111700Z

GRADUAL INCREASE IN STORM COVERAGE/INTENSITY IS FORECAST INTO EARLY
AFTERNOON...WITH ASSOCIATED SEVERE THREAT POSSIBLY REQUIRING WW
ISSUANCE.

MODEST INSTABILITY /LESS THAN 1000 J/KG MIXED-LAYER CAPE/ ACROSS THE
DISCUSSION AREA ATTM IS SUPPORTING SCATTERED STRONGER STORMS FROM
ERN PA ACROSS NJ AND INTO SRN NEW ENGLAND ATTM. PRESENCE OF UPPER
LOW AND ASSOCIATED MID-LEVEL COLD POOL COMBINED WITH SOME HEATING
THROUGH CLEARINGS IN THE CLOUD COVER WILL YIELD FURTHER
DESTABILIZATION INTO EARLY AFTERNOON.

DESPITE AMPLE INSTABILITY...SHEAR IS FORECAST TO BE LIMITED...AS
STRONGER FLOW ALOFT EAST OF THE LOW CENTER -- NOW INDICATED OVER ERN
PA -- SHOULD RESIDE GENERALLY OFFSHORE. AS A RESULT...EXPECT
POTENTIAL FOR WELL-ORGANIZED STORMS -- AND THUS MORE SIGNIFICANT
SEVERE WEATHER -- TO REMAIN LIMITED. ATTM HOWEVER...POTENTIAL FOR
WIDESPREAD/MARGINAL HAIL AND PERHAPS A FEW STRONGER GUSTS COULD
WARRANT THE EVENTUAL ISSUANCE OF A SEVERE THUNDERSTORM WATCH.

..GOSS.. 08/11/2008

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...BOX...OKX...ALY...PHI...BGM...CTP...

40457588 40857576 41697475 41967217 42587043 41726959
41157004 40467367 39507407 39967563

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KCHS [111427]: Preliminary Local Storm Report

NWUS52 KCHS 111427
LSRCHS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
1027 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0513 PM TSTM WND DMG PARKERS FERRY 32.76N 80.40W
08/07/2008 CHARLESTON SC FIRE DEPT/RESCUE

SEVERAL TREES AND POWERLINES REPORTED DOWN ALONG THE
INTERSECTION OF HIGHWAY 17 AND OLD JACKSONBORO ROAD.
PENNY SIZE HAIL ALSO REPORTED IN PARKERS FERRY.

0513 PM TSTM WND DMG 2 S ADAMS RUN 32.69N 80.35W
08/07/2008 CHARLESTON SC FIRE DEPT/RESCUE

SEVERAL TREES REPORTED DOWN ALONG THE INTERSECTION OF
HIGHWAY 174 AND TOOGOODOO ROAD.

&&

$$

JHP

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KGGW [111412]: Preliminary Local Storm Report...summary

NWUS55 KGGW 111412
LSRGGW

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE GLASGOW MT
812 AM MDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0331 PM HAIL 4 W CARLYLE 46.65N 104.16W
08/10/2008 E0.88 INCH WIBAUX MT TRAINED SPOTTER

0400 PM HAIL 8 N GLENTANA 48.96N 106.25W
08/10/2008 E0.75 INCH VALLEY MT TRAINED SPOTTER

0400 PM HAIL 7 ESE WIBAUX 46.95N 104.05W
08/10/2008 E1.00 INCH WIBAUX MT TRAINED SPOTTER

0405 PM HAIL 10 S OPHEIM 48.71N 106.41W
08/10/2008 E0.75 INCH VALLEY MT TRAINED SPOTTER

0510 PM HAIL 6 NE SAVAGE 47.51N 104.25W
08/10/2008 E1.25 INCH RICHLAND MT TRAINED SPOTTER

0522 PM HAIL 2 W CRANE 47.58N 104.30W
08/10/2008 E1.50 INCH RICHLAND MT TRAINED SPOTTER

0525 PM HAIL CRANE 47.58N 104.26W
08/10/2008 E0.75 INCH RICHLAND MT TRAINED SPOTTER

0544 PM TSTM WND GST 4 E WHITETAIL 48.90N 105.07W
08/10/2008 M70.00 MPH DANIELS MT TRAINED SPOTTER

0610 PM HAIL 2 E DALEVIEW 48.91N 104.89W
08/10/2008 E0.75 INCH SHERIDAN MT TRAINED SPOTTER

0630 PM TSTM WND GST 8 N RAYMOND 48.99N 104.58W
08/10/2008 E70.00 MPH SHERIDAN MT TRAINED SPOTTER

0715 PM HAIL 20 E BREDETTE 48.50N 104.86W
08/10/2008 E0.75 INCH ROOSEVELT MT TRAINED SPOTTER

0737 PM TSTM WND GST 12 W RESERVE 48.61N 104.72W
08/10/2008 E60.00 MPH SHERIDAN MT TRAINED SPOTTER

0830 PM HAIL 4 E DAGMAR 48.58N 104.11W
08/10/2008 E0.75 INCH SHERIDAN MT TRAINED SPOTTER

1005 PM HAIL 10 W OPHEIM 48.86N 106.63W
08/10/2008 E0.75 INCH VALLEY MT PUBLIC

PENNY TO PEA SIZE HAIL WITH A 1/2 INCH OF RAIN.

&&

$$

RSMITH

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KTBW [111347]: Preliminary Local Storm Report

NWUS52 KTBW 111347
LSRTBW

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
947 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0853 AM WATER SPOUT 11 WNW CAPTIVA 26.59N 82.35W
08/11/2008 GMZ856 FL TRAINED SPOTTER

CAPTAIN SCOTT REPORTED A WATERSPOUT WSW OF BOCA GRANDE
THAT LASTED FOR 5 MINUTES.

&&

$$

COLSON

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KOUN [111336]: Preliminary Local Storm Report

NWUS54 KOUN 111336
LSROUN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
836 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0834 AM HEAVY RAIN WILL ROGERS AIRPORT 35.39N 97.60W
08/11/2008 M4.16 INCH OKLAHOMA OK ASOS

THE RAINFALL TOTAL WAS THROUGH 830 AM. RAIN WAS STILL
FALLING AT THE SITE.

0834 AM HEAVY RAIN NORMAN 35.22N 97.44W
08/11/2008 M3.95 INCH CLEVELAND OK OFFICIAL NWS OBS

THE RAINFALL TOTAL WAS MEASURED AT THE NATIONAL WEATHER
CENTER. RAIN WAS STILL FALLING AT THE SITE.

&&

$$

TY/SC

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KMHX [111304]: Preliminary Local Storm Report

NWUS52 KMHX 111304
LSRMHX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEWPORT/MOREHEAD CITY NC
904 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0142 AM TSTM WND DMG BEULAVILLE 34.92N 77.77W
08/11/2008 DUPLIN NC COUNTY OFFICIAL

TREE DOWN ON HOME ON JACKSON STORE RD. MULTIPLE BRANCHES
DOWN IN AREA.

&&

$$

MW

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 111301
SWODY1
SPC AC 111258

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0758 AM CDT MON AUG 11 2008

VALID 111300Z - 121200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF THE CNTRL AND NRN
PLNS...

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF NJ...NY AND NEW
ENG...

...SYNOPSIS...
RIDGE WILL PERSIST OVER THE SWRN U.S. THIS PERIOD WHILE LARGELY
CYCLONIC FLOW PREVAILS FROM THE NRN RCKYS AND PLNS E/SE ACROSS THE
REMAINDER OF THE U.S. MORE SPECIFICALLY...AB UPR LOW EXPECTED TO
CONTINUE E INTO SRN SK...WHILE PA UPR LOW GRADUALLY OPENS AND MOVES
E/NE TO NEAR CAPE COD. BETWEEN THOSE TWO SYSTEMS...A SERIES OF
WEAKER DISTURBANCES WILL TRACK GENERALLY ESE IN DIFFLUENT FLOW OVER
THE PLNS AND MS VLY.

FEATURES WILL REMAIN FAIRLY WEAK AT THE SFC. LOW NOW ALONG THE NJ
CST SHOULD EDGE SLOWLY E/NE TODAY/TONIGHT...REACHING CAPE COD BY THE
END OF THE PERIOD. WEAK COLD FRONT TRAILING SW FROM THE LOW WILL
SETTLE FARTHER S ACROSS THE GULF CST STATES...AND EVENTUALLY MERGE
WITH WEAK BOUNDARY EXTENDING ESE FROM N TX SFC WAVE. FARTHER
N...COLD FRONT IN THE WRN DAKS WILL CONTINUE SLOWLY E/SE...FURTHER
OVERTAKING LEE TROUGH AND ASSOCIATED LOW IN WRN SD.

...NRN/CNTRL PLNS TO SRN HI PLNS...
ELEVATED STORMS WILL PERSIST THROUGH THE DAY IN WAA ZONE OVER THE
ERN DAKS AS WEAKENING UPR IMPULSE CONTINUES E INTO DIFFLUENT UPR
FLOW. AIR MASS RECOVERY IN WAKE OF THIS ACTIVITY...UPLIFT ALONG
COLD FRONT/LEE TROUGH...AND UVV ASSOCIATED WITH NEXT DISTURBANCE
ROUNDING BASE OF AB/SK TROUGH LIKELY TO RESULT IN SCTD TSTMS ALONG
THE FRONT AND LEE TROUGH FROM SD INTO NEB AND PERHAPS SE WY/NE CO/NW
KS BY MID TO LATE AFTN.

COMBINATION OF FAIRLY STEEP MID LVL LAPSE RATES WITH STRONG SFC
HEATING AND SFC DEWPOINTS IN THE UPR 50S TO MID 60S F SHOULD YIELD
SBCAPE OF 1000-2000 J/KG. COUPLED WITH 30-35 KT DEEP WNW SHEAR
ASSOCIATED WITH BAND OF SLIGHTLY ENHANCED FLOW ON NERN FRINGE OF
UPR RIDGE...SETUP SHOULD SUPPORT BOTH SUPERCELLS AND MULTICELLS WITH
SVR HAIL AND HIGH WIND THROUGH EARLY EVE.

SLY LLJ SHOULD VEER TO W OR WSWLY OVER THE CNTRL PLNS TONIGHT IN
RESPONSE TO BOTH THE DIURNAL CYCLE AND CONTINUED EWD ADVANCE OF LEAD
UPR IMPULSE. AS A RESULT...ENHANCED WAA LIKELY WILL FOSTER
OVERNIGHT STORM CLUSTERS EWD ACROSS ERN NEB INTO IA AND MN. MODEST
DEGREE OF ELEVATED INSTABILITY SHOULD LIMIT SVR THREAT WITH THESE
STORMS...ALTHOUGH ISOLD MARGINALLY SVR HAIL MAY OCCUR.

FARTHER S...OTHER...MAINLY DIURNAL STORMS EXPECTED INVOF HIGHER
TERRAIN AND ALONG LEE TROUGH FROM SE CO INTO ERN NM. MODERATE
INSTABILITY /SBCAPE TO 1500 J PER KG/ AND 25-30 KT DEEP NWLY SHEAR
COULD SUPPORT A FEW ORGANIZED STRONG/BRIEFLY SVR STORMS...BUT
OVERALL THREAT SHOULD REMAIN LIMITED IN SPACE/TIME.

...WRN/CNTRL/NRN TX TO ARKLATEX/LWR MS VLY...
NUMEROUS AFTN/EVE STORMS EXPECTED TO FORM IN WEAKLY-CAPPED
ENVIRONMENT OVER PARTS OF TX AND LA...S OF WEAK FRONT/OUTFLOW
BOUNDARY OVER THE RED RVR VLY. MID LVL LAPSE RATES WILL BE WEAK
/500 MB TEMPS AROUND MINUS 5 C/...AND MID LVL WNW FLOW WILL REMAIN
MODEST /AOB 25 KT/. BUT PW VALUES WILL BE HIGH...ESPECIALLY ACROSS
NRN/ERN TX AND LA...AND SIZABLE TEMP-DEW POINT SPREADS WILL EXIST IN
WRN/CNTRL TX. IN ADDITION...SOME DEGREE OF LARGE SCALE FORCING FOR
ASCENT WILL BE PRESENT FROM /1/ WEAK DISTURBANCES IN SRN STREAM FLOW
AND/OR /2/ FROM MCV LEFT BY OVERNIGHT CONVECTIVE SYSTEM IN W TX.
SUCH A SETUP APPEARS FAVORABLE FOR THE DEVELOPMENT OF SUSTAINED
CLUSTERS OF STORMS...SOME OF WHICH COULD YIELD ISOLD WET MICROBURSTS
OR OTHER FORMS OF LOCALLY DMGG WIND...IN ADDITION TO HEAVY RAIN.

GRADUAL AMPLIFICATION OF SRN STREAM FLOW AND ASSOCIATED SFC
WAVE/SWLY LLJ SUGGEST THAT STORMS CLUSTERS WILL REMAIN STRONG
THROUGH EARLY TUESDAY FROM E TX EWD INTO LA/MS.

...SERN NY INTO ERN PA/NJ AND SRN NEW ENG...
PRESENCE OF UNUSUALLY COOL UPR LOW AND RESIDUAL LOW LVL MOISTURE
WILL CREATE MODERATELY UNSTABLE CONDITIONS /SBCAPE TO 1500 J PER KG/
OVER PARTS OF THE MID ATLANTIC AND SRN NEW ENGLAND STATES THIS AFTN.
PATH OF UPR SYSTEM WILL KEEP STRONGEST MID LVL FLOW AWAY FROM
OVERLAND REGION OF LOW LVL DESTABILIZATION. ALTHOUGH SETUP MAY
YIELD A FEW SUSTAINED/WEAKLY ORGANIZED STORMS WITH HAIL...
ESPECIALLY FROM THE LWR HUDSON VLY OF NY INTO CT...OVERALL SVR
THREAT SHOULD BE LIMITED BY WEAK SHEAR AND LIKELIHOOD FOR
DESTRUCTIVE INTERFERENCE BETWEEN STORMS.

..CORFIDI/HURLBUT.. 08/11/2008

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KRNK [111259]: Preliminary Local Storm Report

NWUS51 KRNK 111259
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
858 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0440 PM TSTM WND DMG 2 SSW CAMP SPRINGS 36.27N 79.52W
08/10/2008 CASWELL NC DEPT OF HIGHWAYS

TREES DOWN ACROSS PARKDALE ROAD.

&&

$$

HYSELL

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KOUN [111248]: Preliminary Local Storm Report

NWUS54 KOUN 111248
LSROUN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
748 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0730 AM FLASH FLOOD NORMAN 35.22N 97.44W
08/11/2008 CLEVELAND OK NWS EMPLOYEE

NUMEROUS STREETS IN NORMAN ARE IMPASSABLE DUE TO HIGH
WATER. ALSO, SEVERAL CARS HAVE STALLED AT THE
INTERSECTION OF LINSDAY STREET AND ASP AVENUE. RAINFALL
AMOUNTS HAVE TOTALED OVER FOUR INCHES.

0730 AM FLASH FLOOD OKLAHOMA CITY 35.47N 97.51W
08/11/2008 OKLAHOMA OK BROADCAST MEDIA

LOCAL MEDIA HAS REPORTED THAT SEVERAL STREETS IN SOUTH
OKLAHOMA CITY ARE IMPASSABLE DUE TO HIGH WATER. RAINFALL
AMOUNTS HAVE TOTALED OVER FOUR INCHES.

&&

$$

TY/SC

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KSHV [111244]: Preliminary Local Storm Report

NWUS54 KSHV 111244
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
744 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0742 AM FLASH FLOOD MAGNOLIA 33.27N 93.24W
08/11/2008 COLUMBIA AR LAW ENFORCEMENT

FLOODING OCCURRING IN MAGNOLIA AND NEARBY COMMUNITIES.

0715 AM FLASH FLOOD MAGNOLIA 33.27N 93.24W
08/11/2008 COLUMBIA AR BROADCAST MEDIA

VIEWER REPORTING HEAVY RAIN AND FLASH FLOODING.

&&

$$

17

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KSHV [111200]: Preliminary Local Storm Report

NWUS54 KSHV 111200
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
700 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0652 AM FLASH FLOOD MONROE 32.51N 92.08W
08/11/2008 OUACHITA LA LAW ENFORCEMENT

SHERIFFS OFFICE REPORTS NUMEROUS ROADWAYS FLOODED.

&&

$$

JD

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KSHV [111159]: Preliminary Local Storm Report

NWUS54 KSHV 111159
LSRSHV

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SHREVEPORT LA
659 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0615 AM HEAVY RAIN 2 WNW MONROE 32.52N 92.12W
08/11/2008 M5.25 INCH OUACHITA LA TRAINED SPOTTER

OCCURRED IN PAST 6 HOURS. FLOODING LOCALIZED TO BACKED-UP
STORM SEWERS AND YARD FLOODING.

&&

$$

JD

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KOUN [111030]: Preliminary Local Storm Report

NWUS54 KOUN 111030
LSROUN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
530 AM CDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0500 AM FLASH FLOOD SHAWNEE 35.34N 96.92W
08/11/2008 POTTAWATOMIE OK LAW ENFORCEMENT

THE SHAWNEE POLICE DEPARTMENT REPORTED THAT NUMEROUS
ROADS HAVE BEEN CLOSED IN TOWN. THE MESONET SITE 3 MILES
NORTH-NORTHWEST OF SHAWNEE HAS MEASURED OVER FIVE INCHES
OF RAIN.

&&

$$

TY/SC

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KAKQ [110934]: Preliminary Local Storm Report

NWUS51 KAKQ 110934
LSRAKQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WAKEFIELD VA
534 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0630 PM TSTM WND DMG HAGUE 38.07N 76.65W
08/10/2008 WESTMORELAND VA LAW ENFORCEMENT

A FEW TREES DOWN ON ROUTE 202...COPLE HWY.

&&

$$

HURLEY

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KRAH [110831]: Preliminary Local Storm Report...summary

NWUS52 KRAH 110831
LSRRAH

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE RALEIGH NC
430 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0515 PM TSTM WND DMG 8 NW LAURINBURG 34.85N 79.57W
08/10/2008 SCOTLAND NC LAW ENFORCEMENT

TREE DOWN ON HIGHWAY 501.

0515 PM TSTM WND GST 8 NW LAURINBURG 34.85N 79.57W
08/10/2008 E65.00 MPH SCOTLAND NC PUBLIC

COCORAH OBSERVER ESTIMATE OF 60 TO 70 MPH WIND GUST.

0515 PM TSTM WND DMG 8 NW LAURINBURG 34.85N 79.57W
08/10/2008 SCOTLAND NC LAW ENFORCEMENT

TREE DOWN ON HIGHWAY 501.

0515 PM TSTM WND DMG 8 NW LAURINBURG 34.85N 79.57W
08/10/2008 SCOTLAND NC LAW ENFORCEMENT

TREE DOWN ON HIGHWAY 501.

0515 PM TSTM WND GST 8 NW LAURINBURG 34.85N 79.57W
08/10/2008 E0.00 MPH SCOTLAND NC PUBLIC

COCORAH OBSERVER ESTIMATES WIND GUST AT 60 TO 70 MPH.

0515 PM TSTM WND GST 8 NW LAURINBURG 34.85N 79.57W
08/10/2008 E65.00 MPH SCOTLAND NC PUBLIC

COCORAH OBSERVER ESTIMATE OF 60 TO 70 MPH WIND GUST.

0539 PM HAIL STOVALL 36.45N 78.57W
08/10/2008 E1.00 INCH GRANVILLE NC LAW ENFORCEMENT

QUARTER SIZE HAIL NEAR STOVALL.

0539 PM TSTM WND DMG NE SANFORD 35.48N 79.18W
08/10/2008 LEE NC LAW ENFORCEMENT

TREES DOWN HIGHWAY 210 AND AMOS BRIDGES ROAD.

0539 PM HAIL NE SANFORD 35.48N 79.18W
08/10/2008 E0.50 INCH LEE NC LAW ENFORCEMENT

PEA TO MARBLE SIZE HAIL HIGHWAY 421 AND BOONE TRAIL.

0605 PM HAIL 3 N BAHAMA 36.21N 78.88W
08/10/2008 E0.88 INCH DURHAM NC TRAINED SPOTTER

NICKEL SIZE HAIL NEAR MOORES MILL ROAD AND HIGHWAY 501.

0610 PM HAIL BAHAMA 36.17N 78.88W
08/10/2008 E1.00 INCH DURHAM NC TRAINED SPOTTER

NICKEL TO QUATER SIZE HAIL BAHAMA ROAD COUNTRY KNOLL
ROAD.

0610 PM TSTM WND DMG BAHAMA 36.17N 78.88W
08/10/2008 DURHAM NC TRAINED SPOTTER

TREES DOWN ALONG BAHAMA ROAD.

0619 PM TSTM WND DMG MIDDLEBURG 36.40N 78.32W
08/10/2008 VANCE NC LAW ENFORCEMENT

TREES DOWN NORTH PLUMMER AVENUE.

0625 PM TSTM WND DMG 1 E BUTNER 36.14N 78.75W
08/10/2008 GRANVILLE NC LAW ENFORCEMENT

LARGE LIMBS DOWN ALONG HIGHWAY 56.

0625 PM TSTM WND DMG BUTNER 36.14N 78.77W
08/10/2008 GRANVILLE NC LAW ENFORCEMENT

TREE DOWN WEST LYON STATION ROAD.

0708 PM TSTM WND DMG 8 S LITTLETON 36.32N 77.91W
08/10/2008 HALIFAX NC LAW ENFORCEMENT

BARN ROOF BLOWN OFF AT OWL DRIVE.

0710 PM TSTM WND DMG 7 S LITTLETON 36.33N 77.91W
08/10/2008 HALIFAX NC LAW ENFORCEMENT

TREE DOWN HIGHWAY 4.

0745 PM TSTM WND DMG 7 SW NEWTON GROVE 35.18N 78.44W
08/10/2008 SAMPSON NC LAW ENFORCEMENT

TREE DOWN ON A HOUSE... 7 MILES SW OF NEWTON GROVE.

0812 PM HAIL GRANTHAM 35.30N 78.17W
08/10/2008 E0.88 INCH WAYNE NC LAW ENFORCEMENT

NICKEL SIZE HAIL IN GRANTHAM.

0945 PM TSTM WND DMG 1 NW NASHVILLE 35.98N 77.97W
08/10/2008 NASH NC LAW ENFORCEMENT

TREES DOWN ON VICK ROAD.

1003 PM HAIL VASS 35.26N 79.28W
08/10/2008 E0.50 INCH MOORE NC LAW ENFORCEMENT

1/2 INCH HAIL NEAR VASS.

0235 AM HEAVY RAIN 2 S FAYETTEVILLE 35.04N 78.90W
08/11/2008 M1.46 INCH CUMBERLAND NC CO-OP OBSERVER

1.46 INCHES OF RAIN REPORTED BY COCORAHS OBSERVER IN 20
MINUTES.

0235 AM HEAVY RAIN 2 S FAYETTEVILLE 35.04N 78.90W
08/11/2008 M0.00 INCH CUMBERLAND NC CO-OP OBSERVER

1.46 INCHES OF RAIN IN 20 MINUTES.

0250 AM FLASH FLOOD FAYETTEVILLE 35.07N 78.90W
08/11/2008 CUMBERLAND NC LAW ENFORCEMENT

SEVERAL ROADS FLOODED IN FAYETTEVILLE... 2-3 FEET OF
WATER... ROADS CLOSED INCLUDE... SANTA FE DRIVE...
PORTION OF BRAGG BLVD.. CARSON DRIVE.

0400 AM FLASH FLOOD 12 NW CLINTON 35.12N 78.48W
08/11/2008 SAMPSON NC DEPT OF HIGHWAYS

HIGH HOUSE ROAD CLOSED DUE TO FLOODING... 12 MILES NW OF
CLINTON.

0400 AM FLASH FLOOD 5 SW NEWTON GROVE 35.20N 78.42W
08/11/2008 SAMPSON NC DEPT OF HIGHWAYS

HALLTOWN ROAD CLOSED DUE TO FLOODING.

&&

$$

PWB

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 110827
SWOD48
SPC AC 110826

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0326 AM CDT MON AUG 11 2008

VALID 141200Z - 191200Z

...DISCUSSION...

THE PRIMARY FEATURE OF INTEREST DURING THE EXTENDED PERIOD IS THE
EVOLUTION OF A DEEP LOW OVER THE CNTRL CONUS. WHILE DETERMINISTIC
MODEL DATA SETS HAVE SHOWN SLIGHTLY MORE RUN-TO-RUN CONSISTENCY...
INTER-MODEL DIFFERENCES DO EXIST. THE ECMWF IS MORE PROGRESSIVE AND
EVENTUALLY FARTHER TO THE SW WITH THE EVOLUTION OF THE UPPER LOW
WHEN COMPARED TO THE OPERATIONAL GFS AND A NUMBER OF MEDIUM-RANGE
ENSEMBLE MEMBER SOLUTIONS. REGARDLESS OF EVOLUTION...AN
ACCOMPANYING SURFACE COLD FRONT WILL PUSH SWD THROUGH THE PLAINS
STATES AND EVENTUALLY EWD THROUGH THE MS/OH VALLEYS...LIKELY
FOCUSING SEVERAL TSTM EPISODES...SOME OF WHICH COULD BE SEVERE.

ON D4 /THU AUG 14TH/...THE SURFACE COLD FRONT WILL MOVE SWD INTO THE
CNTRL PLAINS...ENCOUNTERING A MOIST AND UNSTABLE AIR MASS. VERTICAL
SHEAR SHOULD TEND TO STRENGTHEN WITH APPROACH OF UPPER SYSTEM WITH
ENVIRONMENT BECOMING FAVORABLE FOR AN ORGANIZED SEVERE WEATHER EVENT
OVER PARTS OF SRN NEB...KS AND ERN CO. THIS PATTERN WOULD FAVOR MCS
DEVELOPMENT WITH SOME SEVERE THREAT LIKELY CONTINUING OVERNIGHT
SWD/SEWD INTO PARTS OF THE SRN PLAINS.

BEYOND D4...CONFIDENCE IN THE EVOLUTION OF THE SURFACE AND
UPPER-LEVEL SYSTEM BEGINS TO DECREASE OWING TO THE ABOVE-MENTIONED
MODEL DIFFERENCES. THEREFORE...NO ADDITIONAL SEVERE WEATHER AREAS
WILL BE DELINEATED ATTM.

..MEAD.. 08/11/2008

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KRAH [110824]: Preliminary Local Storm Report

NWUS52 KRAH 110824
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
424 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0745 PM TSTM WND DMG 7 SW NEWTON GROVE 35.18N 78.44W
08/10/2008 SAMPSON NC LAW ENFORCEMENT

TREE DOWN ON A HOUSE... 7 MILES SW OF NEWTON GROVE.

&&

$$

PWB

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KRAH [110806]: Preliminary Local Storm Report

NWUS52 KRAH 110806
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
406 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0400 AM FLASH FLOOD 5 SW NEWTON GROVE 35.20N 78.42W
08/11/2008 SAMPSON NC DEPT OF HIGHWAYS

HALLTOWN ROAD CLOSED DUE TO FLOODING.

&&

$$

PWB

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KRAH [110804]: Preliminary Local Storm Report

NWUS52 KRAH 110804
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
404 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0400 AM FLASH FLOOD 12 NW CLINTON 35.12N 78.48W
08/11/2008 SAMPSON NC DEPT OF HIGHWAYS

HIGH HOUSE ROAD CLOSED DUE TO FLOODING... 12 MILES NW OF
CLINTON.

&&

$$

PWB

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 110724
SWODY3
SPC AC 110722

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0222 AM CDT MON AUG 11 2008

VALID 131200Z - 141200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER PARTS OF THE CAROLINAS AND
GA...

...THERE IS A SLGT RISK OF SVR TSTMS OVER THE CNTRL HIGH PLAINS...

...SYNOPSIS...

LARGE-SCALE CYCLONIC FLOW REGIME /ANCHORED BY VORTEX OVER ERN
ONTARIO AND QUEBEC/ WILL EXIST OVER THE CNTRL/ERN CONUS WITH
AMPLIFIED RIDGING ALONG THE W COAST. A SERIES OF SMALLER-SCALE
PERTURBATIONS WILL MOVE THROUGH THIS BROADER PATTERN...THE MOST
NOTABLE OF WHICH BEING A STRONG SHORT WAVE TROUGH WHICH WILL
TRANSLATE ENEWD THROUGH THE SERN STATES. IN THE LOW-LEVELS...THE
PRIMARY FEATURE OF INTEREST WILL BE DEEPENING SURFACE LOW WHICH WILL
DEVELOP NEWD FROM ERN AL ACROSS THE CAROLINAS.

...GA INTO THE CAROLINAS...

THE LATEST ECMWF INDICATES THAT AFOREMENTIONED SHORT WAVE TROUGH AND
ATTENDANT SURFACE LOW WILL BE MUCH MORE INTENSE/DYNAMIC THAN THAT OF
THE GFS/NAM. WHILE THERE IS SOME QUESTION AS TO HOW UNSTABLE WARM
SECTOR ENVIRONMENT WILL BECOME GIVEN WEAK MIDLEVEL LAPSE RATES...THE
BOUNDARY LAYER WILL BE VERY MOIST. OF MORE IMPORTANCE...WIND FIELDS
WILL BE SEASONABLY STRONG GIVEN THE DYNAMIC NATURE OF SYNOPTIC
SYSTEM. THUS...IT APPEARS SETUP MAY BE SUPPORTIVE OF EMBEDDED
SUPERCELL AND/OR BOWING STRUCTURES CAPABLE OF A FEW TORNADOES AND
DAMAGING WINDS.

...CNTRL HIGH PLAINS...

AN ENVIRONMENT SIMILAR TO THAT OF TUESDAY IS FORECAST TO DEVELOP AS
MODEST BOUNDARY LAYER MOISTURE IS MAINTAINED BENEATH STEEP MIDLEVEL
LAPSE RATES ALONG AND E OF HIGHER TERRAIN. DIURNAL STORMS ARE
EXPECTED TO DEVELOP BY MID/LATE AFTERNOON ALONG THE FRONT RANGE
AND/OR LEE TROUGH WITHIN AN KINEMATIC ENVIRONMENT FEATURING STRONGLY
VEERING WINDS WITH HEIGHT AND SUFFICIENT VERTICAL SHEAR FOR ROTATING
UPDRAFTS. HAIL AND DAMAGING WINDS WILL BE THE PRIMARY SEVERE
THREATS.

..MEAD.. 08/11/2008

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KABQ [110718]: Preliminary Local Storm Report

NWUS55 KABQ 110718
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
118 AM MDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0100 AM FLASH FLOOD 1 N ROSWELL 33.39N 104.53W
08/11/2008 CHAVES NM EMERGENCY MNGR

FLOODED VEHICLE FOUND ON BERRENDO ROAD NEAR BERRENDO
CREEK. FLOOD WATERS STILL ABOVE CURBS IN THIS
NEIGHBORHOOD.

&&

$$

GUYER

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KABQ [110704]: Preliminary Local Storm Report

NWUS55 KABQ 110704
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
104 AM MDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

1230 AM FLASH FLOOD ROSWELL 33.37N 104.53W
08/11/2008 CHAVES NM LAW ENFORCEMENT

SEVERAL REPORTS OF LAW ENFORCEMENT VEHICLES FLOODED OUT
ON THE NORTH SIDE OF ROSWELL. 1 AUTOMOBILE WASHED AWAY
AND POLICE ARE SEARCHING FOR THE VEHICLE. MULTIPLE POWER
OUTAGES ALSO REPORTED.

&&

$$

GUYER

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KRAH [110704]: Preliminary Local Storm Report

NWUS52 KRAH 110704
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
303 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0235 AM HEAVY RAIN 2 S FAYETTEVILLE 35.04N 78.90W
08/11/2008 M0.00 INCH CUMBERLAND NC CO-OP OBSERVER

1.46 INCHES OF RAIN IN 20 MINUTES.

0235 AM HEAVY RAIN 2 S FAYETTEVILLE 35.04N 78.90W
08/11/2008 M1.46 INCH CUMBERLAND NC CO-OP OBSERVER

1.46 INCHES OF RAIN REPORTED BY COCORAHS OBSERVER IN 20
MINUTES.

&&

$$

PBADGETT

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KRAH [110700]: Preliminary Local Storm Report

NWUS52 KRAH 110700
LSRRAH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RALEIGH NC
300 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0250 AM FLASH FLOOD FAYETTEVILLE 35.07N 78.90W
08/11/2008 CUMBERLAND NC LAW ENFORCEMENT

SEVERAL ROADS FLOODED IN FAYETTEVILLE... 2-3 FEET OF
WATER... ROADS CLOSED INCLUDE... SANTA FE DRIVE...
PORTION OF BRAGG BLVD.. CARSON DRIVE.

&&

$$

PBADGETT

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 110546
SWODY1
SPC AC 110544

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1244 AM CDT MON AUG 11 2008

VALID 111200Z - 121200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PART OF THE NRN PLAINS
SWWD TO THE CENTRAL HIGH PLAINS...

...NRN/CENTRAL PLAINS TO SRN HIGH PLAINS...
DEEP UPPER TROUGH CENTERED OVER WRN CANADA SUNDAY NIGHT IS FORECAST
TO TRACK SLOWLY ENEWD INTO ERN ALBERTA/CENTRAL SASKATCHEWAN BY 12Z
TUESDAY...WITH THE SRN EXTENT OF THE ATTENDANT TROUGH SPREADING EWD
FROM THE NRN ROCKIES TO THE NRN PLAINS BY THIS EVENING. HEIGHT
FALLS ATTENDANT TO THIS UPPER TROUGH AND SEVERAL IMPULSES MOVING EWD
ACROSS THE PLAINS TODAY WILL PROVIDE FORCING FOR ASCENT RESULTING IN
CONVECTION FROM THE DAKOTAS SWWD TO THE CENTRAL HIGH PLAINS.
ALTHOUGH THE PRIMARY SURFACE LOW SHOULD MOVE NEWD ACROSS SRN
CANADA...A SECONDARY AREA OF LOW PRESSURE LOCATED ALONG THE TRAILING
COLD FRONT WILL LIKELY TRACK FROM WRN SD TO NWRN MN THIS FORECAST
PERIOD AS THE FRONT SPREADS EWD ACROSS THE DAKOTAS/NEB.

GIVEN THE ORIENTATION OF THE UPPER TROUGH AS IT SPREADS EWD ACROSS
THE NRN/CENTRAL PLAINS TODAY...STRONGEST MID/UPPER LEVEL FLOW IS
EXPECTED TO EXTEND ACROSS SD AND THE CENTRAL PLAINS. THIS WILL
RESULT IN A PLUME OF STEEP LAPSE RATES EXTENDING EWD ACROSS THESE
SAME REGIONS WHERE SURFACE HEATING AND LOW LEVEL MOISTURE WILL
CONTRIBUTE TO A MODERATELY UNSTABLE AIR MASS. TSTMS WILL LIKELY BE
ONGOING AT 12Z TODAY ACROSS ND INTO PARTS OF NRN SD ATTENDANT TO WAA
AND ASCENT AHEAD OF A LEAD IMPULSE. GREATEST DESTABILIZATION SHOULD
OCCUR SWWD OF THE MORNING CONVECTION AND IN ADVANCE OF THE
PROGRESSIVE COLD FRONT FROM CENTRAL SD SWWD INTO NERN CO. STRONGEST
EFFECTIVE BULK SHEAR WILL COINCIDE WITH THIS INSTABILITY CORRIDOR
SUPPORTING ORGANIZED SEVERE STORMS...WITH SUPERCELLS LIKELY OVER THE
SRN HALF OF THE SLIGHT RISK AREA WHERE SHEAR VALUES SHOULD BE AROUND
35 KT. HAIL AND STRONG WIND GUSTS SHOULD BE THE PRIMARY THREATS.
SLY LOW LEVEL WINDS WILL VEER TO WLY ACROSS ERN SD/ERN NEB TONIGHT
AND RESULT IN A WAA REGIME ACROSS PARTS OF MN/IA SUPPORTING AN
OVERNIGHT CONVECTIVE THREAT. WEAK ELEVATED INSTABILITY SHOULD LIMIT
THE SEVERE WEATHER THREAT WITH THIS ACTIVITY.

FARTHER S ACROSS SERN CO AND ERN NM...THE AIR MASS SHOULD BECOME
MODERATELY UNSTABLE. THIS COMBINED WITH 30 KT OF EFFECTIVE BULK
SHEAR SUGGESTS A FEW ORGANIZED STRONG TO SEVERE STORMS WILL BE
POSSIBLE...BUT OVERALL SEVERE WEATHER THREAT AT THIS TIME WARRANTS
ONLY LOW SEVERE PROBABILITIES.

...CENTRAL/NRN TX AND RED RIVER VALLEY EWD TO LOWER MS VALLEY...
DESPITE GENERALLY WEAK MID LEVEL LAPSE RATES EXTENDING EWD ACROSS
THIS REGION...SURFACE HEATING WITHIN A MOIST AIR MASS WILL RESULT IN
MODERATE INSTABILITY ALONG AND EITHER SIDE OF THE SURFACE FRONT.
SLY LOW LEVEL FLOW WILL SUPPORT TSTMS WITHIN WAA REGIME ALONG AND N
OF THE FRONT...WITH RE-STRENGTHENING LLJ FROM E TX INTO THE ARKLATEX
TONIGHT MAINTAINING CONVECTION THROUGH LATE TONIGHT. WEAK MID LEVEL
LAPSE RATES AND DEEP LAYER SHEAR WILL PRECLUDE STORM ORGANIZATION
AND GREATER POTENTIAL FOR SEVERE WEATHER. HOWEVER...STEEP LOW LEVEL
LAPSE RATES ACROSS MUCH OF TX WITHIN THE GENERAL TSTM AREA SHOULD
SUPPORT A FEW STORMS PRODUCING DAMAGING WIND GUSTS.

...SRN NEW ENGLAND TO FAR ERN PA/NJ...
CLOSED UPPER LOW CENTERED OVER PA AT 12Z TODAY WILL PROGRESS EWD AND
SHOULD EVOLVE INTO AN OPEN WAVE ALONG AND JUST OFF THE SRN NEW
ENGLAND COAST TOWARD 12Z TUESDAY. ATTENDANT SURFACE LOW SHOULD MOVE
EWD OFF THE NJ COAST THIS AFTERNOON...WITH THE TRAILING COLD FRONT
REACHING THE COAST OF NC/SC BY EARLY AFTERNOON. GIVEN THE TIMING
FOR THE EWD TRACK OF THE CLOSED LOW...MODELS SUGGEST STRONGER MID
LEVEL FLOW WILL SPREAD OFFSHORE THE MID ATLANTIC COAST PRIOR TO THE
DEVELOPMENT OF GREATER DIURNAL INSTABILITY INLAND. ALTHOUGH A FEW
ORGANIZED STORMS MAY FORM...OVERALL SEVERE WEATHER THREAT SHOULD
REMAIN LOW...WITH ISOLATED HAIL/STRONGER WIND GUSTS ALONG TRACK OF
MID LEVEL COLD CORE ATTENDANT TO CLOSED LOW.

..PETERS/HURLBUT.. 08/11/2008

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KGYX [110542]: Preliminary Local Storm Report...corrected

NWUS51 KGYX 110542
LSRGYX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAY ME
141 AM EDT MON AUG 11 2008

..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..

0220 PM HAIL WNW SHAPLEIGH 43.54N 70.85W
08/10/2008 M0.75 INCH YORK ME TRAINED SPOTTER

0337 PM HAIL DUNBARTON 43.10N 71.62W
08/10/2008 E1.00 INCH MERRIMACK NH PUBLIC

0340 PM HAIL BOW 43.13N 71.55W
08/10/2008 E0.75 INCH MERRIMACK NH PUBLIC

0342 PM HAIL BOW 43.13N 71.55W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC

0345 PM TSTM WND DMG DUNBARTON 43.10N 71.62W
08/10/2008 MERRIMACK NH PUBLIC

TREE DOWN BLOCKING ROAD

0350 PM HAIL LONDONDERRY 42.85N 71.36W
08/10/2008 E0.75 INCH ROCKINGHAM NH PUBLIC

0353 PM HAIL DERRY 42.88N 71.33W
08/10/2008 E0.75 INCH ROCKINGHAM NH PUBLIC

0354 PM HAIL LONDONDERRY 42.85N 71.36W
08/10/2008 E1.00 INCH ROCKINGHAM NH PUBLIC

0354 PM HAIL LONDONDERRY 42.85N 71.36W
08/10/2008 E1.00 INCH ROCKINGHAM NH PUBLIC

0354 PM TSTM WND DMG 7 NE MONROE 44.32N 71.96W
08/10/2008 GRAFTON NH AMATEUR RADIO

TREES BLOCKING ROAD ON ROUTE 135 NEAR DAM ROAD.

0400 PM TSTM WND DMG LONDONDERRY 42.85N 71.36W
08/10/2008 ROCKINGHAM NH PUBLIC

TREE DOWN IN YARD. TOOK DOWN POWER LINES.

0407 PM TSTM WND DMG LITTLETON 44.31N 71.77W
08/10/2008 GRAFTON NH PUBLIC

TREES DOWN IN PARKING LOT OF HAMPTON INN.

0410 PM HAIL 1 SSW CLAREMONT 43.36N 72.35W
08/10/2008 E0.88 INCH SULLIVAN NH TRAINED SPOTTER

0412 PM HAIL CLAREMONT 43.38N 72.34W
08/10/2008 E0.75 INCH SULLIVAN NH PUBLIC

0442 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.88 INCH BELKNAP NH PUBLIC

0454 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.75 INCH BELKNAP NH PUBLIC

0454 PM HAIL GILFORD 43.55N 71.41W
08/10/2008 E0.75 INCH BELKNAP NH PUBLIC

0454 PM HAIL GILFORD 43.55N 71.41W
08/10/2008 E1.00 INCH BELKNAP NH PUBLIC

0455 PM HAIL GILFORD 43.55N 71.41W
08/10/2008 E0.75 INCH BELKNAP NH PUBLIC

STREET FLOODING.

0500 PM TSTM WND DMG 2 W SANBORNTON 43.49N 71.62W
08/10/2008 BELKNAP NH AMATEUR RADIO

TREE ON HOUSE ON POUND ROAD.

0503 PM HAIL 3 W LACONIA 43.53N 71.53W
08/10/2008 E0.75 INCH BELKNAP NH TRAINED SPOTTER

0504 PM HAIL LACONIA 43.53N 71.47W
08/10/2008 E0.88 INCH BELKNAP NH PUBLIC

0506 PM HAIL ANDOVER 43.44N 71.82W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC

0510 PM TSTM WND DMG MEREDITH 43.66N 71.50W
08/10/2008 BELKNAP NH AMATEUR RADIO

LARGE TREE DOWN AND POWER OUT ON PEASE ROAD AND ROUTE 104

0530 PM FLASH FLOOD MEREDITH 43.66N 71.50W
08/10/2008 BELKNAP NH PUBLIC

PARADE ROAD WASHED OUT.

0530 PM HAIL MEREDITH 43.66N 71.50W
08/10/2008 E0.88 INCH BELKNAP NH PUBLIC

0532 PM HAIL HOLDERNESS 43.73N 71.59W
08/10/2008 E0.88 INCH GRAFTON NH PUBLIC

0538 PM HAIL DANBURY 43.53N 71.86W
08/10/2008 E0.88 INCH MERRIMACK NH PUBLIC

0600 PM FLASH FLOOD 1 NNE HOLDERNESS 43.75N 71.58W
08/10/2008 GRAFTON NH AMATEUR RADIO

MULTIPLE WASHOUTS AND LINES DOWN ON ROUTE 113 BETWEEN
HOLDERNESS AND SANDWICH

0610 PM HAIL 4 NE HOLDERNESS 43.77N 71.53W
08/10/2008 E0.88 INCH CARROLL NH AMATEUR RADIO

0615 PM FLASH FLOOD 4 NE HOLDERNESS 43.77N 71.53W
08/10/2008 CARROLL NH AMATEUR RADIO

PORTIONS OF PINEHURST ROAD UNDER WATER.

0630 PM FLASH FLOOD DORCHESTER 43.76N 71.95W
08/10/2008 GRAFTON NH LAW ENFORCEMENT

PARTS OF RIVER ROAD WASHED OUT AND IMPASSABLE.

0636 PM HAIL NORTH CONWAY 44.05N 71.13W
08/10/2008 E0.75 INCH CARROLL NH PUBLIC

0808 PM FLASH FLOOD FRANKLIN 43.44N 71.65W
08/10/2008 MERRIMACK NH LAW ENFORCEMENT

BENNETT BROOK ROAD WASHED OUT.

0825 PM FLASH FLOOD FRANKLIN 43.44N 71.65W
08/10/2008 MERRIMACK NH AMATEUR RADIO

MEADOW BROOK DRIVE FLOODED. FLOODED BASEMENT. LAKE SHORE
PERSON TRAPPED IN BUILDING DUE TO RISING WATERS.

0830 PM FLASH FLOOD HOLDERNESS 43.73N 71.59W
08/10/2008 GRAFTON NH LAW ENFORCEMENT

NUMEROUS WASHOUTS. PERCH POND ROAD AND OTHERS.

0846 PM FLOOD 4 E ANDOVER 44.64N 70.67W
08/10/2008 OXFORD ME AMATEUR RADIO

FLOODING ON ROUTE 11 NEAR HERSEY FARM AND AT DYERS
CROSSING.

&&

$$

KIRKA

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 110528
SWODY2
SPC AC 110525

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1225 AM CDT MON AUG 11 2008

VALID 121200Z - 131200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER THE CNTRL HIGH PLAINS...

...SYNOPSIS...

LARGE-SCALE TROUGHING WILL BE MAINTAINED OVER THE ERN CONUS DURING
THE DAY TWO PERIOD WITH SOME SUPPRESSION OF WRN U.S. RIDGE OCCURRING
DUE TO THE PRESENCE OF UPPER LOW OVER ALBERTA/SASKATCHEWAN. MORE
SPECIFICALLY...A SHORT WAVE TROUGH WILL MOVE SEWD THROUGH THE OZARK
PLATEAU INTO THE LOWER MS VALLEY...WHILE AN UPSTREAM IMPULSE ALSO
SHIFTS SSEWD FROM THE UPPER MS VALLEY INTO IA. IN THE LOW
LEVELS...SURFACE LOW ATTENDANT TO LEAD SHORT WAVE TROUGH WILL
DEVELOP EWD ALONG BAROCLINIC ZONE FROM THE ARKLATEX ACROSS THE GULF
COAST STATES. ELSEWHERE...WEAK LOW PRESSURE WILL DEVELOP SWD FROM
MN INTO IA ALONG COLD FRONT MOVING EWD THROUGH THE UPPER MS AND
MID/LOWER MO RIVER VALLEYS.

...CNTRL HIGH PLAINS...

DEEPENING LEE CYCLONE OVER ERN CO WILL RESULT IN INCREASING ELY/SELY
LOW-LEVEL FLOW ACROSS THE REGION TUESDAY. BOUNDARY LAYER MOISTURE
WILL BE SOMEWHAT MARGINAL /DEWPOINTS IN THE 40S TO LOWER 50S/...BUT
THE PRESENCE OF RATHER STEEP MIDLEVEL LAPSE RATES WILL CONTRIBUTE TO
AN AXIS OF MODERATE INSTABILITY WITH MLCAPES APPROACHING 1000-1500
J/KG. LATEST MODEL GUIDANCE SUGGESTS THAT A LOW AMPLITUDE
DISTURBANCE MAY MOVE THROUGH WY DURING THE DAY...HOWEVER OROGRAPHIC
FORCING WILL LIKELY BE THE PRIMARY MECHANISM INITIATING ISOLATED TO
SCATTERED...DIURNAL TSTM DEVELOPMENT. FORECAST HODOGRAPHS SHOW
CONSIDERABLE VEERING WINDS WITH HEIGHT WITH SUFFICIENT DEEP-LAYER
VERTICAL SHEAR FOR LONGER-LIVED/ROTATING UPDRAFTS. STORMS MAY
PERSIST INTO TUESDAY NIGHT ACROSS THE HIGH PLAINS OF ERN CO...WRN KS
AND SWRN NEB. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY
SEVERE THREATS WITH THE MOST INTENSE TSTMS.

...IA INTO ERN KS/WRN MO...

A MOIST BOUNDARY LAYER /DEWPOINTS IN THE 60S/ COMBINED WITH DAYTIME
HEATING WILL CONTRIBUTE TO A MODERATELY UNSTABLE AIR MASS BY
AFTERNOON AHEAD OF FRONT WITH MLCAPES INCREASING TO 1000-2000 J/KG.
FRONTAL CONVERGENCE AND INCREASING LARGE-SCALE FORCING IN ADVANCE OF
SHORT WAVE TROUGH MOVING SSEWD FROM THE UPPER MS VALLEY ARE EXPECTED
TO RESULT IN AN INCREASE IN TSTM COVERAGE BY MID/LATE AFTERNOON.
THE STRONGEST STORMS WILL BE CAPABLE OF GUSTY WINDS AND SOME HAIL
THROUGH THE EVENING HOURS. HOWEVER...IT APPEARS THAT MARGINAL
MIDLEVEL LAPSE RATES AND VERTICAL SHEAR MAY TEND TO LIMIT A MORE
ORGANIZED SEVERE THREAT.

...ERN TX INTO THE CNTRL GULF STATES...

A VERY MOIST AIR MASS WILL EXIST ALONG/S OF SURFACE BAROCLINIC ZONE
WITH DEWPOINTS IN THE 70S. WIDESPREAD CLOUDS/PRECIPITATION WILL
LIMIT DAYTIME HEATING AND LAPSE RATES...THOUGH POCKETS OF MODERATE
INSTABILITY ARE POSSIBLE WHERE LOCALLY STRONGER INSOLATION CAN
OCCUR. MODEL GUIDANCE SUGGESTS THAT LOWER TO MID-TROPOSPHERIC WIND
FIELDS WILL STRENGTHEN THROUGH THE PERIOD WITH THE APPROACH OF SHORT
WAVE TROUGH. WHEN COMBINED WITH THE MOIST/UNSTABLE
ENVIRONMENT...SOME POTENTIAL WILL EXIST FOR MARGINAL SUPERCELL
STRUCTURES EMBEDDED IN LARGER PRECIPITATION SHIELD. WHILE A BRIEF
TORNADO AND/OR LOCALLY STRONG WIND GUSTS WILL BE POSSIBLE...A MORE
SUBSTANTIAL SEVERE THREAT WILL LIKELY BE LIMITED BY THE MARGINAL
INSTABILITY.

..MEAD.. 08/11/2008

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