MESO: Mesoscale Discussion 2007

ACUS11 KWNS 110329
SWOMCD
SPC MCD 110328
NDZ000-110500-

MESOSCALE DISCUSSION 2007
NWS STORM PREDICTION CENTER NORMAN OK
1028 PM CDT THU SEP 10 2009

AREAS AFFECTED...CNTRL ND

CONCERNING...SEVERE THUNDERSTORM WATCH 738...

VALID 110328Z - 110500Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 738
CONTINUES.

THE THREAT FOR HAIL AND LOCALLY DAMAGING WIND GUSTS IS EXPECTED TO
CONTINUE INTO CNTRL PARTS OF WW AREA.

AS OF 03Z...MESOANALYSIS INDICATED A SURFACE LOW W OF BIS WITH
ASSOCIATED COLD FRONT EXTENDING FROM E OF MOT THROUGH THE LOW CENTER
SWWD INTO W-CNTRL SD S OF 2WX. AS OF 0320Z...STRONG TO SEVERE TSTMS
WERE OBSERVED ALONG FRONT FROM SHERIDAN...MCLEAN AND BURLEIGH
COUNTIES ND TO CORSON COUNTY SD. MODIFICATION OF 00Z BIS SOUNDING
FOR CURRENT SURFACE CONDITIONS SUGGESTS THAT BOUNDARY LAYER IS
GRADUALLY STABILIZING OWING TO THE ONSET OF NOCTURNAL COOLING.
HOWEVER...INCREASING DEEP ASCENT IN ADVANCE OF SHORT WAVE TROUGH AND
FRONTAL CONVERGENCE SHOULD SERVE TO MAINTAIN ONGOING STORMS EWD
ACROSS WW AREA WITH A CONTINUED THREAT FOR ISOLATED HAIL AND LOCALLY
STRONG WIND GUSTS.

..MEAD.. 09/11/2009

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

ATTN...WFO...FGF...BIS...

LAT...LON 46260203 47690092 48550015 48959932 48869877 48119884
46909915 46459978 45990071 46260203

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KBIS [110255]: Preliminary Local Storm Report

NWUS53 KBIS 110255
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
955 PM CDT THU SEP 10 2009

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

0930 PM TSTM WND GST 4 N NEW SALEM 46.90N 101.42W
09/10/2009 E60 MPH MORTON ND TRAINED SPOTTER

ESTIMATED 50 TO 60 MPH WINDS LASTED 5 MINUTES. PEA SIZED
HAIL AND FREQUENT LIGHTNING ALSO OCCURRED.

&&

$$

THAMILTO

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KUNR [110254]: Preliminary Local Storm Report

NWUS53 KUNR 110254
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
854 PM MDT THU SEP 10 2009

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

0810 PM HAIL 3 S LEMMON 45.90N 102.16W
09/10/2009 E0.88 INCH PERKINS SD PUBLIC

&&

$$

LCZEPYHA

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KUNR [110250]: Preliminary Local Storm Report

NWUS53 KUNR 110250
LSRUNR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
850 PM MDT THU SEP 10 2009

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

0815 PM HAIL 4 S LEMMON 45.88N 102.16W
09/10/2009 E1.00 INCH PERKINS SD PUBLIC

&&

$$

LCZEPYHA

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KBIS [110226]: Preliminary Local Storm Report

NWUS53 KBIS 110226
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
925 PM CDT THU SEP 10 2009

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

0920 PM TSTM WND GST CENTER 47.12N 101.30W
09/10/2009 E60 MPH OLIVER ND EMERGENCY MNGR

ALSO DIME TO NICKEL SIZED HAIL.

&&

$$

THAMILTO

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KBIS [110223]: Preliminary Local Storm Report

NWUS53 KBIS 110223
LSRBIS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BISMARCK ND
922 PM CDT THU SEP 10 2009

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

0900 PM HAIL 5 SE STRAWBERRY LAKE 47.71N 100.79W
09/10/2009 M1.00 INCH MCLEAN ND TRAINED SPOTTER

PEA TO QUARTER SIZED HAIL LASTED 15 MINUTES.

&&

$$

THAMILTO

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 110035
SWODY1
SPC AC 110032

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0732 PM CDT THU SEP 10 2009

VALID 110100Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE NRN
PLAINS...

...NRN PLAINS...
A WELL-ORGANIZED UPPER-LEVEL TROUGH WILL CONTINUE TO APPROACH THE
REGION FROM THE WEST NORTHWEST THIS EVENING. AHEAD OF THE
SYSTEM...AN AXIS OF MODERATE INSTABILITY IS ANALYZED FROM CNTRL SD
EXTENDING NNEWD INTO SRN MANITOBA WITH A COLD FRONT LOCATED ACROSS
WRN ND. INCREASING LARGE-SCALE ASCENT AHEAD OF THE APPROACHING
UPPER-LEVEL TROUGH AND MORE FOCUSED LOW-LEVEL CONVERGENCE ALONG THE
FRONT SHOULD RESULT IN THUNDERSTORM INITIATION OVER THE NEXT 1-2
HOURS ACROSS WCNTRL ND. MODEL FORECASTS ARE IN AGREEMENT DEVELOPING
A CLUSTER OF THUNDERSTORMS THIS EVENING FROM ERN SD SWWD INTO PARTS
OF NWRN SD. THE 00Z SOUNDING FROM BISMARK SHOWS ABOUT 40 KT OF 0-6
KM SHEAR WITH A GRADUALLY VEERING WIND PROFILE BELOW 700 MB. THIS
ALONG WITH STEEP MID-LEVEL LAPSE RATES SHOULD SUPPORT ROTATING
STORMS WITH A THREAT FOR LARGE HAIL. AS STORMS INCREASE IN COVERAGE
ALONG THE BOUNDARY...A TRANSITION TO A MORE LINEAR MODE COULD OCCUR
RESULTING IN AN INCREASING THREAT FOR ISOLATED WIND DAMAGE LATE THIS
EVENING.

FURTHER SOUTHWEST ACROSS THE BLACK HILLS AND WRN NEB...MODEL
FORECASTS KEEP CONVECTIVE DEVELOPMENT MINIMAL DUE TO WEAKER
LARGE-SCALE ASCENT. A CAPPING INVERSION IS FORECAST TO STRENGTHEN
OVER WRN SD SUGGESTING ANY STORMS THAT CAN INITIATE WILL BECOME
ELEVATED LATE THIS EVENING INTO THE OVERNIGHT PERIOD. THE BEST
CHANCE FOR A SEVERE THREAT OVERNIGHT SHOULD BE WITH THE CLUSTER OF
THUNDERSTORMS ON THE NOSE OF THE LOW-LEVEL JET ACROSS WRN MN AND ERN
SD. ALTHOUGH INSTABILITY WILL BE DECREASING QUICKLY OVERNIGHT...A
MARGINAL SEVERE THREAT COULD LINGER AS A SFC LOW AND COLD FRONT
MOVES INTO THE ERN DAKOTAS.

...COASTS OF MD/DE AND NJ...
A LOW PRESSURE SYSTEM JUST OFF THE COASTAL WATERS OF VIRGINA WILL
MOVE SLOWLY NWWD TONIGHT ALLOWING FOR A BAND OF THUNDERSTORM
ACTIVITY TO MOVE ONSHORE INTO THE IMMEDIATE COASTAL AREAS OF MD...DE
AND NJ. THE LATEST WSR-88D VWP FROM DOVER DE SHOWS A VEERING
LOW-LEVEL WIND PROFILE WITH HEIGHT BELOW 3 KM WITH 25-30 KT OF 0-1
KM SHEAR. IN ADDITION LCL HEIGHTS MAY DROP AND PRECIPITABLE WATER
VALUES MAY INCREASE AS THE LOW MOVES TOWARD THE COAST. THESE FACTORS
ALONG WITH THE STRONG LOW-LEVEL SHEAR MAY SUPPORT A MARGINAL TORNADO
THREAT WITH ROTATING STORMS THAT MOVE INLAND THIS EVENING AND
OVERNIGHT.

..BROYLES.. 09/11/2009

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WATCHES: Severe Thunderstorm Watch Number 738

WWUS20 KWNS 110028
SEL8
SPC WW 110028
NDZ000-110700-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 738
NWS STORM PREDICTION CENTER NORMAN OK
730 PM CDT THU SEP 10 2009

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

CENTRAL INTO NORTHEASTERN NORTH DAKOTA

EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 730 PM
UNTIL 200 AM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES SOUTH OF
BISMARCK NORTH DAKOTA TO 65 MILES NORTH NORTHEAST OF DEVILS LAKE
NORTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.

DISCUSSION...VERY STRONG UPPER LEVEL SYSTEM DIGGING ACROSS THE NRN
HIGH PLAINS WILL FOCUS INCREASING THUNDERSTORMS OVER CENTRAL ND THIS
EVENING/OVERNIGHT. 00Z SOUNDINGS INDICATE STEEP MID LEVEL LAPSE
RATES WITH SUFFICIENT INFLUX OF LOW LEVEL MOISTURE TO SUSTAIN
MODERATE MUCAPE OVERNIGHT. LOW LEVEL SHEAR REMAINS WEAK...HOWEVER
SUFFICIENT DEEP LAYER SHEAR WILL REMAIN IN PLACE FOR ORGANIZATION
INTO CLUSTERS/LINES AND PERHAPS A FEW SUPERCELLS. LARGE HAIL AND
HEAVY RAIN WILL BE PRIMARY THREATS...ALTHOUGH ISOLATED DAMAGING
WINDS REMAIN POSSIBLE.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 26020.

...EVANS

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KTSA [110029]: Preliminary Local Storm Report

NWUS54 KTSA 110029
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
728 PM CDT THU SEP 10 2009

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

1050 PM FLASH FLOOD 6 W JAY 36.42N 94.90W
09/09/2009 DELAWARE OK LAW ENFORCEMENT

ROAD WAS CLOSED AT THE INTERSECTION OF HIGHWAY 20 AND
HIGHWAY 28 DUE TO WATER OVER THE ROAD

0100 AM FLASH FLOOD COLCORD 36.26N 94.69W
09/10/2009 DELAWARE OK LAW ENFORCEMENT

COLCORD KEITHLY ROAD WAS CLOSED DUE TO WATER OVER THE
ROADWAY

&&

$$

DMJ

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KFGZ [102317]: Preliminary Local Storm Report...corrected

NWUS55 KFGZ 102317
LSRFGZ

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
417 PM MST THU SEP 10 2009

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

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ FIRE DEPT/RESCUE

NUMEROUS HOMES FLOODED

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ TRAINED SPOTTER

WIDESPREAD STREET FLOODING...STREAMBEDS OVERFLOWING
BANKS...LARGE BOULDERS WASHED INTO STREETS...PAVED
ROADWAYS ERODED

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ TRAINED SPOTTER

TLAQUEPAQUE SHOPPING CENTER PARKING LOT AND BUSINESSES
FLOODED. CARS MOVED BY WATER.

&&

$$

DJO

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KFGZ [102232]: Preliminary Local Storm Report...corrected

NWUS55 KFGZ 102232
LSRFGZ

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
332 PM MST THU SEP 10 2009

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

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ FIRE DEPT/RESCUE

NUMEROUS HOMES FLOODED

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ TRAINED SPOTTER

WIDESPREAD STREET FLOODING...STREAMBEDS OVERFLOWING BANKS

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ TRAINED SPOTTER

TLAQUEPAQUE SHOPPING CENTER PARKING LOT AND BUSINESSES
FLOODED

&&

$$

DJO

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KFGZ [102217]: Preliminary Local Storm Report

NWUS55 KFGZ 102217
LSRFGZ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
316 PM MST THU SEP 10 2009

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

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ FIRE DEPT/RESCUE

NUMEROUS HOMES FLOODED

0230 PM FLASH FLOOD SEDONA 34.86N 111.79W
09/10/2009 YAVAPAI AZ TRAINED SPOTTER

WIDESPREAD STREET FLOODING...STREAMBEDS OVERFLOWING BANKS

&&

$$

DJO

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MESO: Mesoscale Discussion 2006

ACUS11 KWNS 102154
SWOMCD
SPC MCD 102153
NDZ000-SDZ000-102330-

MESOSCALE DISCUSSION 2006
NWS STORM PREDICTION CENTER NORMAN OK
0453 PM CDT THU SEP 10 2009

AREAS AFFECTED...CNTRL ND INTO WRN SD

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 102153Z - 102330Z

TSTMS ARE EXPECTED TO DEVELOP OVER PARTS OF DISCUSSION AREA BY 00Z.
HAIL AND LOCALLY STRONG WIND GUSTS WILL BE POSSIBLE WITH THE
STRONGEST STORMS AND CONVECTIVE TRENDS ARE BEING MONITORED FOR A
POSSIBLE WW.

SYNTHESIS OF SATELLITE AND SURFACE OBSERVATIONAL DATA INDICATE A
NUMBER OF BOUNDARIES PRESENT ACROSS THE REGION AS OF 21Z. THE MOST
NOTABLE WAS PRIMARY WIND SHIFT WHICH EXTENDED FROM MOT-E OF 2WX-GCC.
OTHER MORE SUBTLE BOUNDARIES WERE APPARENT FROM DVL SSWWD TO ERN
KIDDER/WRN STUTSMAN COUNTIES ND AND OVER TOWNER AND BENSON COUNTIES
ND. MODIFICATION OF 19Z BIS SOUNDING FOR CURRENT BOUNDARY LAYER
CONDITIONS SUGGESTS THAT CAP HAS BECOME QUITE WEAK. HOWEVER...MAIN
SHORT WAVE TROUGH LAGS WARM SECTOR WELL TO THE W OVER CNTRL MT.
THUS...WEAK LOW-LEVEL CONVERGENCE AND DAYTIME HEATING WILL BE THE
PRIMARY PROCESSES WHICH MAY CONTRIBUTE TO STORM INITIATION PRIOR TO
00Z.

CURRENT BIS VWP SHOWS RATHER WEAK WINDS BELOW 3 KM...WITH A NOTABLE
INCREASE IN THE 5-7 KM LAYER TO 40-45 KT. GIVEN THE PRESENCE OF THE
STEEP LAPSE RATES AND RESULTANT MLCAPE OF 1500-2000 J/KG...THIS
KINEMATIC PROFILE SHOULD BE SUFFICIENT FOR A FEW ORGANIZED STORMS
CAPABLE OF SEVERE HAIL AND LOCALLY DAMAGING WIND GUSTS. VERTICAL
SHEAR DECREASES WITH SWD EXTENT INTO WRN SD...THOUGH THE STEEP LAPSE
RATES MAY STILL SUPPORT ISOLATED SEVERE STORMS THROUGH THIS EVENING.

..MEAD.. 09/10/2009

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

ATTN...WFO...FGF...ABR...BIS...UNR...

LAT...LON 44820393 46750253 48030191 48860115 48970016 48969941
48729830 48299799 47299887 46489950 45700011 43890231
43690341 44820393

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KTSA [102152]: Preliminary Local Storm Report

NWUS54 KTSA 102152
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
452 PM CDT THU SEP 10 2009

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

0701 AM FLASH FLOOD 3 S TAHLEQUAH 35.87N 94.97W
09/10/2009 CHEROKEE OK LAW ENFORCEMENT

PARK HILL ROAD COVERED WITH WATER, STILL PASSABLE.

&&

$$

KDJ

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KEWX [102137]: Preliminary Local Storm Report...summary

NWUS54 KEWX 102137
LSREWX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
437 PM CDT THU SEP 10 2009

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

1230 PM FLASH FLOOD 3 ESE GREY FOREST 29.60N 98.63W
09/09/2009 BEXAR TX LAW ENFORCEMENT

BABCOCK RD CLOSED FROM CAMP BULIS RD TO CHASE HILL BLVD

1115 AM HEAVY RAIN 8 NNW PEARSALL 28.98N 99.16W
09/10/2009 M3.43 INCH FRIO TX COCORAHS

75 MIN RAINFALL

1120 AM HEAVY RAIN 7 W CASTROVILLE 29.35N 98.99W
09/10/2009 M3.21 INCH MEDINA TX COCORAHS

90 MIN RAINFALL

0115 PM HEAVY RAIN 3 WNW NEW BRAUNFELS 29.72N 98.17W
09/10/2009 E3.25 INCH COMAL TX COCORAHS

75 MIN RAINFALL

0143 PM HEAVY RAIN 3 WSW NEW BRAUNFELS 29.68N 98.16W
09/10/2009 M4.95 INCH COMAL TX COCORAHS

2.5 HR RAINFALL

0148 PM FLASH FLOOD 3 ENE BULVERDE 29.75N 98.41W
09/10/2009 BEXAR TX NWS EMPLOYEE

BULVERDE RD CLOSED AT CIBOLO RIVER CROSSING

0200 PM HEAVY RAIN 3 WNW NEW BRAUNFELS 29.71N 98.17W
09/10/2009 E5.00 INCH COMAL TX PUBLIC

2 HR RAINFALL

0210 PM HEAVY RAIN 3 WNW NEW BRAUNFELS 29.72N 98.17W
09/10/2009 M5.13 INCH COMAL TX COCORAHS

5.11 IN FROM 11...58 AM-2...10 PM

0211 PM FLASH FLOOD NEW BRAUNFELS 29.70N 98.12W
09/10/2009 COMAL TX NWS EMPLOYEE

NUMEROUS ROADS CLOSED IN AND AROUND NEW BRAUNFELS
CLOSED OR WITH WATER RUNNING OVER THEM.

0216 PM FLASH FLOOD NEW BRAUNFELS 29.70N 98.12W
09/10/2009 COMAL TX EMERGENCY MNGR

LANDA ST CLOSED FROM MISSION TO WALNUT. S. BUS I35 FROM
SEGUIN ST TO OLD MCQUEENEY RD.

0240 PM HEAVY RAIN NEW BRAUNFELS 29.70N 98.12W
09/10/2009 M4.67 INCH COMAL TX COCORAHS

RAINFALL PAST 5 HOURS. COMAL RIVER UP 4 FEET SINCE 10
AM

0300 PM HEAVY RAIN 2 N MCQUEENEY 29.62N 98.05W
09/10/2009 M4.21 INCH GUADALUPE TX COCORAHS

3 HOUR RAINFALL

0330 PM FLASH FLOOD 1 W WIMBERLEY 29.99N 98.12W
09/10/2009 HAYS TX BROADCAST MEDIA

HWY 1492 CLOSED AT RIVER ROAD- WATER OVER ROAD

0334 PM HEAVY RAIN 3 WSW NEW BRAUNFELS 29.68N 98.16W
09/10/2009 M6.31 INCH COMAL TX COCORAHS

6.31 SO FAR. 1.36 IN PAST 105 MINUTES. DRY COMAL CREEK
OUT OF BANKS

0400 PM FLASH FLOOD SAN ANTONIO 29.42N 98.49W
09/10/2009 BEXAR TX DEPT OF HIGHWAYS

NUMEROUS ROAD CLOSURES IN SAN ANTONIO AREA. JUNG AT
STALL RD.... LOCKHILL AT WHITE BONNET...

&&

EVENT NUMBER EWX0900050 EWX0900051 EWX0900052 EWX0900053 EWX0900054
EWX0900055 EWX0900056 EWX0900059 EWX0900057 EWX0900058 EWX0900060
EWX0900061 EWX0900063 EWX0900062 EWX0900064

$$

JPB

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KEWX [102116]: Preliminary Local Storm Report

NWUS54 KEWX 102116
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
416 PM CDT THU SEP 10 2009

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

0400 PM FLASH FLOOD SAN ANTONIO 29.42N 98.49W
09/10/2009 BEXAR TX DEPT OF HIGHWAYS

NUMEROUS ROAD CLOSURES IN SAN ANTONIO AREA. JUNG AT
STALL RD.... LOCKHILL AT WHITE BONNET...

&&

EVENT NUMBER EWX0900064

$$

JPB

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KTSA [102113]: Preliminary Local Storm Report

NWUS54 KTSA 102113
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
412 PM CDT THU SEP 10 2009

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

0400 PM FLOOD 4 W PORTER 35.87N 95.59W
09/10/2009 WAGONER OK LAW ENFORCEMENT

THE PORTER POLICE DEPARTMENT REPORTED 10 TO 12 FEET OF
WATER FLOWING ACROSS A TEMPORARY LOW WATER CROSSING ON
349TH STREET WHERE IT CROSSES THE YELLOW WATER CREEK. THE
OFFICER INDICATED THAT THE LOW WATER CROSSING WAS BEING
USED AS A RESULT OF BRIDGE CONSTRUCTION OVER THE CREEK
AND THAT THIS AMOUNT OF WATER WOULD NOT AFFECT THE ROAD
IF THE NORMAL BRIDGE WERE IN USE. HOWEVER...PEOPLE ARE
CURRENTLY TRAPPED BY THE HIGH WATER AS THE ROAD DEAD ENDS
SOUTH OF THE CREEK.

&&

$$

KAH

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KEWX [102047]: Preliminary Local Storm Report

NWUS54 KEWX 102047
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
347 PM CDT THU SEP 10 2009

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

0330 PM FLASH FLOOD 1 W WIMBERLEY 29.99N 98.12W
09/10/2009 HAYS TX BROADCAST MEDIA

HWY 1492 CLOSED AT RIVER ROAD- WATER OVER ROAD

&&

EVENT NUMBER EWX0900063

$$

JPB

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KEWX [102042]: Preliminary Local Storm Report

NWUS54 KEWX 102042
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
342 PM CDT THU SEP 10 2009

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

0334 PM HEAVY RAIN 3 WSW NEW BRAUNFELS 29.68N 98.16W
09/10/2009 M6.31 INCH COMAL TX COCORAHS

6.31 SO FAR. 1.36 IN PAST 105 MINUTES. DRY COMAL CREEK
OUT OF BANKS

&&

EVENT NUMBER EWX0900062

$$

JPB

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KEWX [102012]: Preliminary Local Storm Report

NWUS54 KEWX 102012
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
312 PM CDT THU SEP 10 2009

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

0300 PM HEAVY RAIN 2 N MCQUEENEY 29.62N 98.05W
09/10/2009 M4.21 INCH GUADALUPE TX COCORAHS

3 HOUR RAINFALL

&&

EVENT NUMBER EWX0900061

$$

JPB

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 102002
SWODY1
SPC AC 101959

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0259 PM CDT THU SEP 10 2009

VALID 102000Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER THE NRN PLAINS LAST THIS
AFTERNOON AND TONIGHT...

...NRN PLAINS...
NO CHANGES HAVE BEEN MADE TO THE SEVERE WEATHER THREAT AREAS FOR
THIS OUTLOOK.

EARLY AFTERNOON SURFACE ANALYSES SHOWED A COLD FRONT...ATTENDANT TO
THE AMPLIFYING SHORTWAVE TROUGH...EXTENDED FROM NERN MT TO NWRN WY.
19Z BIS SOUNDING SHOWED VERY LITTLE CAPPING LEFT AROUND 750 MB...
WITH OBJECTIVE ANALYSES ALSO INDICATING SURFACE BASED INHIBITION HAS
BEEN ELIMINATED GIVEN THE COMBINATION OF LOW LEVEL MOISTURE RETURN
/SURFACE DEWPOINTS IN THE LOWER-MID 60S...SURFACE HEATING...AND
COOLING MID LEVEL TEMPERATURES. DESPITE THESE THERMODYNAMIC
PROCESSES RESULTING IN MODERATE INSTABILITY...SHORTWAVE RIDGING HAS
THUS FAR LIMITED MORE ROBUST CONVECTIVE DEVELOPMENT. INCREASING WLY
MID LEVEL FLOW WITH APPROACH OF UPPER TROUGH IS SUPPORTING
STRENGTHENING EFFECTIVE BULK SHEAR /35-45 KT/ FROM NWRN SD TO ERN
ND/NWRN MN. TIMING OF STORM INITIATION SHOULD OCCUR AROUND 21-23Z
ACROSS CENTRAL/ERN ND...WITH SIMILAR STORM MODE EVOLUTION EXPECTED
AS INDICATED BY PREVIOUS FORECAST.

VIS IMAGERY/LIGHTNING DATA INDICATED AN ISOLATED STORM OVER THE
BLACK HILLS. CONVECTION WILL REMAIN POSSIBLE ACROSS THE HIGHER
TERRAIN...BUT WEAKER INSTABILITY ACROSS FAR WRN SD MAY TEND TO LIMIT
SEVERE WEATHER THREAT ACROSS THIS PART OF THE SLIGHT RISK AREA.

..PETERS.. 09/10/2009

.PREV DISCUSSION... /ISSUED 1100 AM CDT THU SEP 10 2009/

...NRN PLAINS...
MID LEVEL TROUGH...LOCATED OVER SRN ALBERTA THIS MORNING...IS
FORECAST TO DIG SEWD INTO NERN MT LATE AFTERNOON AND INTO CENTRAL ND
BY EARLY FRIDAY MORNING. ACCOMPANYING COLD FRONT...CURRENTLY MOVING
SEWD THROUGH CENTRAL MT...IS FORECAST TO EXTEND FROM FAR NWRN MN
SWWD INTO SERN WY BY 11/12Z. SLY FLOW AHEAD OF THE FRONT HAS
ADVECTED RICHER BOUNDARY LAYER MOISTURE INTO CENTRAL SD...AND SHOULD
SPREAD NNEWD ACROSS CENTRAL/SRN ND THIS AFTERNOON. THE COMBINATION
OF STRONG INSOLATION...SURFACE DEWPOINTS IN THE LOW 60S AND STEEP
MID LEVEL LAPSE RATES WILL SUPPORT MLCAPE VALUES OF 1500-2500 J/KG
LATE THIS AFTERNOON. THUNDERSTORMS MAY FORM BY LATE
AFTERNOON...AFTER 22Z...IN ERN ND IN REGION OF WEAK WARM ADVECTION.
HOWEVER...MORE WIDESPREAD THUNDERSTORM COVERAGE SHOULD OCCUR AFTER
DARK AS LARGE SCALE FORCING STRENGTHENS. DEEP LAYER SHEAR AT 35-40
KT FAVORS A MIX OF MULTICELL CLUSTERS AND SUPERCELL STRUCTURES. THE
THERMODYNAMIC STRUCTURE APPEARS MOST FAVORABLE FOR HAIL WITH THE
EARLY STORMS...BUT THE STORMS ARE EXPECTED TO CONSOLIDATE INTO A
LINEAR SYSTEM OVERNIGHT ALONG THE COLD FRONT...WITH WIND DAMAGE
BECOMING THE GREATER THREAT AT THAT TIME.

...FAR ERN DELMARVA AND SRN NJ...
BROAD UPPER LOW WAS SITUATED IN THE VA/WV AREA THIS MORNING...WITH
SEVERAL VORTICITY CENTERS ROTATING AROUND THIS SYSTEM. PAST AND
LATEST MODEL FORECASTS HAVE BEEN CONSISTENT IN SUGGESTING THAT AS
ONE OF THESE VORT MAXES ROTATES NWWD INTO THE MID ATLANTIC
STATES...THE OFFSHORE LOW...LOCATED ABOUT 150 NM EAST OF THE NC
OUTER BANKS AT 15Z...WOULD MOVE NWWD AND INTO THE NRN DELMARVA AREA
LATE TONIGHT. THIS WOULD ADVECT RICHER ATLANTIC MOISTURE WWD AND
STRONG AMBIENT LOW/DEEP LAYER SHEAR MIGHT SUPPORT A SUPERCELL OR TWO
WITH A VERY LOW TORNADO/SEVERE WIND POTENTIAL. HOWEVER...THE GREATER
INSTABILITY AND ASSOCIATED WARM SECTOR IS MOST LIKELY TO REMAIN
OFFSHORE...SO ONLY LOW TORNADO PROBABILITIES ARE FORECAST ALONG THE
COAST FROM FAR ERN MD NEWD INTO SRN NJ.

...NWRN GULF/TX COASTAL REGION...
WIDESPREAD CONVECTION WAS LOCATED ACROSS SRN TX AND THE NWRN
GULF...ALONG AND NORTH OF A SURFACE TROUGH IN THE GULF...AND AHEAD
OF AN UPPER WAVE LOCATED NEAR LRD. WIDESPREAD CLOUDS/PCPN ALONG WITH
WEAK ENVIRONMENTAL WINDS SHOULD LIMIT THE SEVERE THREAT...THOUGH PW
VALUES FROM 2.25-2.50 INCHES MAY SUPPORT LOCALLY HEAVY RAINFALL
RATES.

...AZ/NM THIS AFTERNOON/EVENING...
WEAK MID/HIGH LEVEL CIRCULATION IN THE GRAND CANYON REGION COMBINED
WITH STRONG HEATING WILL SUPPORT SCATTERED AFTERNOON/EVENING
THUNDERSTORMS. THE SEVERE THREAT APPEARS REMOTE AS THE UPDRAFTS WILL
BE DISORGANIZED AND SHORT-LIVED DUE TO WEAK WINDS/SHEAR...ESPECIALLY
FROM THE SURFACE-500 MB.

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KEWX [101950]: Preliminary Local Storm Report

NWUS54 KEWX 101950
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
250 PM CDT THU SEP 10 2009

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

0240 PM HEAVY RAIN NEW BRAUNFELS 29.70N 98.12W
09/10/2009 M4.67 INCH COMAL TX COCORAHS

RAINFALL PAST 5 HOURS. COMAL RIVER UP 4 FEET SINCE 10
AM

&&

EVENT NUMBER EWX0900060

$$

JPB

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KEWX [101920]: Preliminary Local Storm Report

NWUS54 KEWX 101920
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
220 PM CDT THU SEP 10 2009

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

0210 PM HEAVY RAIN 3 WNW NEW BRAUNFELS 29.72N 98.17W
09/10/2009 M5.13 INCH COMAL TX COCORAHS

5.11 IN FROM 11...58 AM-2...10 PM

&&

EVENT NUMBER EWX0900059

$$

JPB

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KEWX [101918]: Preliminary Local Storm Report

NWUS54 KEWX 101918
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
218 PM CDT THU SEP 10 2009

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

0216 PM FLASH FLOOD NEW BRAUNFELS 29.70N 98.12W
09/10/2009 COMAL TX EMERGENCY MNGR

LANDA ST CLOSED FROM MISSION TO WALNUT. S. BUS I35 FROM
SEGUIN ST TO OLD MCQUEENEY RD.

&&

EVENT NUMBER EWX0900058

$$

JPB

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KEWX [101912]: Preliminary Local Storm Report

NWUS54 KEWX 101912
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
212 PM CDT THU SEP 10 2009

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

0211 PM FLASH FLOOD NEW BRAUNFELS 29.70N 98.12W
09/10/2009 COMAL TX NWS EMPLOYEE

NUMEROUS ROADS CLOSED IN AND AROUND NEW BRAUNFELS
CLOSED OR WITH WATER RUNNING OVER THEM.

&&

EVENT NUMBER EWX0900057

$$

JPB

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KEWX [101909]: Preliminary Local Storm Report

NWUS54 KEWX 101909
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
209 PM CDT THU SEP 10 2009

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

0200 PM HEAVY RAIN 3 WNW NEW BRAUNFELS 29.71N 98.17W
09/10/2009 E5.00 INCH COMAL TX PUBLIC

2 HR RAINFALL

&&

EVENT NUMBER EWX0900056

$$

JPB

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KEWX [101907]: Preliminary Local Storm Report

NWUS54 KEWX 101907
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
207 PM CDT THU SEP 10 2009

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

0148 PM FLASH FLOOD 3 ENE BULVERDE 29.75N 98.41W
09/10/2009 BEXAR TX NWS EMPLOYEE

BULVERDE RD CLOSED AT CIBOLO RIVER CROSSING

&&

EVENT NUMBER EWX0900055

$$

JPB

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KEWX [101858]: Preliminary Local Storm Report

NWUS54 KEWX 101858
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
158 PM CDT THU SEP 10 2009

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

0143 PM HEAVY RAIN 3 WSW NEW BRAUNFELS 29.68N 98.16W
09/10/2009 M4.95 INCH COMAL TX COCORAHS

2.5 HR RAINFALL

&&

EVENT NUMBER EWX0900054

$$

JPB

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KTSA [101851]: Preliminary Local Storm Report

NWUS54 KTSA 101851
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
150 PM CDT THU SEP 10 2009

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

0900 AM FLOOD 5 E LENAPAH 36.85N 95.55W
09/10/2009 NOWATA OK DEPT OF HIGHWAYS

STATE HWY 10 AT CEDAR CREEK WAS CLOSED DUE TO HIGH WATER
SHORTLY BEFORE 9AM. AT 9AM...THE RIVER GAGE ALONG THE
VERDIGRIS RIVER NEAR LENAPAH REPORTED A STAGE OF 29.7FT
WHICH WAS BELOW FLOOD STAGE. HWY 10 IS USUALLY IMPACTED
WHEN THE VERDIGRIS REACHES 34FT. HOWEVER...DUE TO THE
RISING RIVER AND SEVERAL DAYS OF RAIN IN THE AREA...CEDAR
CREEK HAS OVERFLOWED ITS BANKS.

&&

$$

NMM

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KEWX [101828]: Preliminary Local Storm Report

NWUS54 KEWX 101828
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
128 PM CDT THU SEP 10 2009

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

0115 PM HEAVY RAIN 3 WNW NEW BRAUNFELS 29.72N 98.17W
09/10/2009 E3.25 INCH COMAL TX COCORAHS

75 MIN RAINFALL

&&

EVENT NUMBER EWX0900053

$$

JPB

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KTSA [101807]: Preliminary Local Storm Report...corrected

NWUS54 KTSA 101807
LSRTSA

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE TULSA OK
107 PM CDT THU SEP 10 2009

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

1100 AM FLASH FLOOD OKTAHA 35.58N 95.47W
09/10/2009 MUSKOGEE OK POST OFFICE

PREVIOUS REPORT OF WATER FLOWING INTO SCHOOL FOUND TO BE
IN ERROR. SCHOOL OFFICIALS REPORT NO WATER IN OKTAHA
SCHOOL BUILDINGS.

&&

$$

KDJ

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 101730
SWODY2
SPC AC 101728

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1228 PM CDT THU SEP 10 2009

VALID 111200Z - 121200Z

...NO SVR TSTM AREAS FORECAST...

...SYNOPSIS...
12Z MODELS REMAIN CONSISTENT INDICATING THE SHORTWAVE TROUGH
AMPLIFYING SEWD INTO THE NRN PLAINS TODAY WILL EVOLVE INTO A CLOSED
LOW FRIDAY AND TRACK SWWD TOWARD THE CENTRAL/NRN HIGH PLAINS. THIS
PATTERN CHANGE WILL RESULT IN A REX BLOCK AS SPLIT FLOW REGIME OVER
WRN CANADA BREAKS DOWN AND A RIDGE BUILDS N/NEWD INTO WRN/CENTRAL
CANADA. WEAK SURFACE LOW ATTENDANT TO THE CLOSED LOW SHOULD OCCLUDE
OVER THE ERN DAKOTAS BEFORE UNDERGOING FURTHER WEAKENING. TRAILING
FRONT WILL ADVANCE SWD THROUGH THE CENTRAL PLAINS. MEANWHILE...THE
OH VALLEY UPPER LOW WILL DRIFT SLOWLY TOWARD THE MID ATLANTIC
REGION.

...CENTRAL PLAINS TO MID MO VALLEY...
UPPER 50S TO LOW 60S DEWPOINTS WILL PERSIST IN WARM SECTOR FROM THE
CENTRAL AND SRN PLAINS THROUGH THE MS VALLEY. MUCH OF THE MOIST
WARM SECTOR WILL HAVE SHIFTED EAST OF THE STEEPER LAPSE RATES WITH
WEAK INSTABILITY LIKELY. THE EXCEPTION REMAINS OVER THE CENTRAL
HIGH PLAINS WHERE A PLUME OF RELATIVELY STEEP LAPSE RATES WILL EXIST
ALONG WRN PERIPHERY OF LOW LEVEL MOISTURE RESULTING IN THE POTENTIAL
FOR MODERATE INSTABILITY.

AT 12Z FRIDAY...TSTMS ARE EXPECTED TO BE ONGOING ALONG THE SURFACE
FRONT FROM NRN NEB THROUGH THE ERN DAKOTAS TO NWRN MN. ADDITIONAL
STORMS WILL LIKELY REDEVELOP ALONG THE CONVECTIVELY ENHANCED FRONT
AS IT MOVES EWD AND SEWD DURING THE DAY. MODELS CONTINUE TO
INDICATE STRONG DEEP LAYER SHEAR WILL REMAIN WNW OF THE FRONT.
THUS...WEAK VERTICAL SHEAR CO-LOCATED WITH STRONGER INSTABILITY OVER
THE CENTRAL PLAINS SHOULD RESULT IN A RATHER LIMITED SEVERE WEATHER
THREAT.

..PETERS.. 09/10/2009

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KTSA [101657]: Preliminary Local Storm Report

NWUS54 KTSA 101657
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1156 AM CDT THU SEP 10 2009

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

1100 AM FLOOD OKTAHA 35.58N 95.47W
09/10/2009 MUSKOGEE OK POST OFFICE

WATER FLOWING INTO SCHOOL BUILDINGS.

0702 AM FLASH FLOOD OKTAHA 35.58N 95.47W
09/10/2009 MUSKOGEE OK POST OFFICE

2 BLOCKS OF OKTAHA FLOODED WITH APPROXIMATELY A FOOT OF
WATER.

0930 AM FLASH FLOOD OKTAHA 35.58N 95.47W
09/10/2009 MUSKOGEE OK POST OFFICE

50 PERCENT OF POSTAL ROUTE UNABLE TO BE COMPLETED DUE TO
FLOODED ROADS.

&&

$$

KDJ

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KGSP [101652]: Preliminary Local Storm Report

NWUS52 KGSP 101652
LSRGSP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1252 PM EDT THU SEP 10 2009

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

0230 PM TSTM WND DMG MARION 35.68N 82.01W
09/09/2009 MCDOWELL NC COUNTY OFFICIAL

SEVERAL TREES DOWN AROUND TOWN, TIME ESTIMATED FROM RADAR
DATA.

&&

$$

NED

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KEWX [101639]: Preliminary Local Storm Report

NWUS54 KEWX 101639
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1139 AM CDT THU SEP 10 2009

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

1120 AM HEAVY RAIN 7 W CASTROVILLE 29.35N 98.99W
09/10/2009 M3.21 INCH MEDINA TX COCORAHS

90 MIN RAINFALL

&&

EVENT NUMBER EWX0900052

$$

JPB

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KEWX [101624]: Preliminary Local Storm Report

NWUS54 KEWX 101624
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
1124 AM CDT THU SEP 10 2009

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

1115 AM HEAVY RAIN 8 NNW PEARSALL 28.98N 99.16W
09/10/2009 M3.43 INCH FRIO TX COCORAHS

75 MIN RAINFALL

&&

EVENT NUMBER EWX0900051

$$

JPB

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 101603
SWODY1
SPC AC 101600

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1100 AM CDT THU SEP 10 2009

VALID 101630Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS OVER THE NRN PLAINS LATE THIS
AFTERNOON AND TONIGHT...

...NRN PLAINS...
MID LEVEL TROUGH...LOCATED OVER SRN ALBERTA THIS MORNING...IS
FORECAST TO DIG SEWD INTO NERN MT LATE AFTERNOON AND INTO CENTRAL ND
BY EARLY FRIDAY MORNING. ACCOMPANYING COLD FRONT...CURRENTLY MOVING
SEWD THROUGH CENTRAL MT...IS FORECAST TO EXTEND FROM FAR NWRN MN
SWWD INTO SERN WY BY 11/12Z. SLY FLOW AHEAD OF THE FRONT HAS
ADVECTED RICHER BOUNDARY LAYER MOISTURE INTO CENTRAL SD...AND SHOULD
SPREAD NNEWD ACROSS CENTRAL/SRN ND THIS AFTERNOON. THE COMBINATION
OF STRONG INSOLATION...SURFACE DEWPOINTS IN THE LOW 60S AND STEEP
MID LEVEL LAPSE RATES WILL SUPPORT MLCAPE VALUES OF 1500-2500 J/KG
LATE THIS AFTERNOON. THUNDERSTORMS MAY FORM BY LATE
AFTERNOON...AFTER 22Z...IN ERN ND IN REGION OF WEAK WARM ADVECTION.
HOWEVER...MORE WIDESPREAD THUNDERSTORM COVERAGE SHOULD OCCUR AFTER
DARK AS LARGE SCALE FORCING STRENGTHENS. DEEP LAYER SHEAR AT 35-40
KT FAVORS A MIX OF MULTICELL CLUSTERS AND SUPERCELL STRUCTURES. THE
THERMODYNAMIC STRUCTURE APPEARS MOST FAVORABLE FOR HAIL WITH THE
EARLY STORMS...BUT THE STORMS ARE EXPECTED TO CONSOLIDATE INTO A
LINEAR SYSTEM OVERNIGHT ALONG THE COLD FRONT...WITH WIND DAMAGE
BECOMING THE GREATER THREAT AT THAT TIME.

...FAR ERN DELMARVA AND SRN NJ...
BROAD UPPER LOW WAS SITUATED IN THE VA/WV AREA THIS MORNING...WITH
SEVERAL VORTICITY CENTERS ROTATING AROUND THIS SYSTEM. PAST AND
LATEST MODEL FORECASTS HAVE BEEN CONSISTENT IN SUGGESTING THAT AS
ONE OF THESE VORT MAXES ROTATES NWWD INTO THE MID ATLANTIC
STATES...THE OFFSHORE LOW...LOCATED ABOUT 150 NM EAST OF THE NC
OUTER BANKS AT 15Z...WOULD MOVE NWWD AND INTO THE NRN DELMARVA AREA
LATE TONIGHT. THIS WOULD ADVECT RICHER ATLANTIC MOISTURE WWD AND
STRONG AMBIENT LOW/DEEP LAYER SHEAR MIGHT SUPPORT A SUPERCELL OR TWO
WITH A VERY LOW TORNADO/SEVERE WIND POTENTIAL. HOWEVER...THE GREATER
INSTABILITY AND ASSOCIATED WARM SECTOR IS MOST LIKELY TO REMAIN
OFFSHORE...SO ONLY LOW TORNADO PROBABILITIES ARE FORECAST ALONG THE
COAST FROM FAR ERN MD NEWD INTO SRN NJ.

...NWRN GULF/TX COASTAL REGION...
WIDESPREAD CONVECTION WAS LOCATED ACROSS SRN TX AND THE NWRN
GULF...ALONG AND NORTH OF A SURFACE TROUGH IN THE GULF...AND AHEAD
OF AN UPPER WAVE LOCATED NEAR LRD. WIDESPREAD CLOUDS/PCPN ALONG WITH
WEAK ENVIRONMENTAL WINDS SHOULD LIMIT THE SEVERE THREAT...THOUGH PW
VALUES FROM 2.25-2.50 INCHES MAY SUPPORT LOCALLY HEAVY RAINFALL
RATES.

...AZ/NM THIS AFTERNOON/EVENING...
WEAK MID/HIGH LEVEL CIRCULATION IN THE GRAND CANYON REGION COMBINED
WITH STRONG HEATING WILL SUPPORT SCATTERED AFTERNOON/EVENING
THUNDERSTORMS. THE SEVERE THREAT APPEARS REMOTE AS THE UPDRAFTS WILL
BE DISORGANIZED AND SHORT-LIVED DUE TO WEAK WINDS/SHEAR...ESPECIALLY
FROM THE SURFACE-500 MB.

..IMY/GRAMS.. 09/10/2009

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KBMX [101557]: Preliminary Local Storm Report

NWUS54 KBMX 101557
LSRBMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1057 AM CDT THU SEP 10 2009

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

0210 PM TSTM WND DMG 2 N ADDISON 34.23N 87.18W
09/09/2009 WINSTON AL EMERGENCY MNGR

A POLE BARN/STORAGE SHED WAS BLOWN OVER. A FEW TREES WERE
BLOWN DOWN BETWEEN GRAYSON AND ADDISON.

&&

$$

JD/02

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KTSA [101537]: Preliminary Local Storm Report

NWUS54 KTSA 101537
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1037 AM CDT THU SEP 10 2009

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

0948 AM FLASH FLOOD BOYNTON 35.65N 95.66W
09/10/2009 MUSKOGEE OK PUBLIC

ANKLE DEEP WATER OVER THE ROADS.

&&

$$

KDJ

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KBRO [101532]: Preliminary Local Storm Report

NWUS54 KBRO 101532
LSRBRO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BROWNSVILLE TX
1032 AM CDT THU SEP 10 2009

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

1031 AM HEAVY RAIN FALCON DAM 26.55N 99.13W
09/10/2009 M0.00 INCH STARR TX CO-OP OBSERVER

FALCON DAM COOP OBSERVER REPORTED 24 HOUR RAINFALL
MEASUREMENT OF 7.70 INCHES.

&&

$$

JSTRAUB

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KGSP [101532]: Preliminary Local Storm Report

NWUS52 KGSP 101532
LSRGSP

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1132 AM EDT THU SEP 10 2009

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

0558 PM TSTM WND DMG CROSS KEYS 34.63N 81.78W
09/09/2009 UNION SC COUNTY OFFICIAL

TREE DOWN ON A ROAD. TIME ESTIMATED BY RADAR.

&&

$$

NED

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KMRX [101522]: Preliminary Local Storm Report

NWUS54 KMRX 101522
LSRMRX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MORRISTOWN TN
1122 AM EDT THU SEP 10 2009

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

0815 PM HAIL DANDRIDGE 36.02N 83.42W
09/09/2009 E0.75 INCH JEFFERSON TN DEPT OF HIGHWAYS

PENNY SIZE HAIL NEAR DANDRIDGE. REPORTED BY COUNTY HWY
DEPT.

&&

$$

GRC

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KTSA [101518]: Preliminary Local Storm Report

NWUS54 KTSA 101518
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1018 AM CDT THU SEP 10 2009

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

1014 AM FLASH FLOOD REDBIRD 35.89N 95.59W
09/10/2009 WAGONER OK PUBLIC

HALF A FOOT OF WATER FLOWING OVER THE ROADWAY.

&&

$$

KDJ

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KRNK [101424]: Preliminary Local Storm Report

NWUS51 KRNK 101424
LSRRNK

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1023 AM EDT THU SEP 10 2009

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

0115 PM TSTM WND DMG 3 SSW TAZEWELL 37.08N 81.54W
09/09/2009 TAZEWELL VA DEPT OF HIGHWAYS

TREE DOWN ACROSS ROUTE 604 BLOCKING BOTH LANES IN THE
THOMPSON VALLEY AREA.

&&

$$

JH

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KTSA [101421]: Preliminary Local Storm Report

NWUS54 KTSA 101421
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
920 AM CDT THU SEP 10 2009

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

0917 AM FLASH FLOOD WAINWRIGHT 35.61N 95.56W
09/10/2009 MUSKOGEE OK POST OFFICE

COUNTY ROADS COVERED IN WATER.

&&

$$

KDJ

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KMLB [101259]: Preliminary Local Storm Report

NWUS52 KMLB 101259
LSRMLB

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MELBOURNE FL
849 AM EDT THU SEP 10 2009

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

0745 AM FUNNEL CLOUD 2 E CAPE CANAVERAL 28.39N 80.57W
09/10/2009 AMZ552 FL PUBLIC

RECEIVED LATE REPORT OF A FUNNEL CLOUD OFFSHORE CAPE
CANAVERAL. FUNNEL WAS OBSERVED FOR 20 MINUTES DISSIPATING
AT 0755LT WITHOUT TOUCHING WATER.

&&

$$

KELLY

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KMFL [101256]: Preliminary Local Storm Report

NWUS52 KMFL 101256
LSRMFL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
855 AM EDT THU SEP 10 2009

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

0843 AM WATER SPOUT 15 ESE WEST PALM BEACH 26.63N 79.84W
09/10/2009 AMZ650 FL AIRPLANE PILOT

A PILOT REPORTED A WATERSPOUT 15 MILES EAST SOUTHEAST OF
PALM BEACH INTL AIRPORT.

&&

$$

GREGORIA

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KTSA [101250]: Preliminary Local Storm Report

NWUS54 KTSA 101250
LSRTSA

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
750 AM CDT THU SEP 10 2009

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

0730 AM FLASH FLOOD KIBLER 35.43N 94.23W
09/10/2009 CRAWFORD AR EMERGENCY MNGR

WATER OVER THORN HILL ROAD AND EAST ELM BLVD WITH
CONDITION NEAR IMPASSABLE.

&&

$$

JBM

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 101248
SWODY1
SPC AC 101244

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0744 AM CDT THU SEP 10 2009

VALID 101300Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS THIS EVENING INTO TONIGHT FOR
THE NRN PLAINS...

...NRN PLAINS THIS EVENING INTO TONIGHT...
A PRONOUNCED NRN STREAM MID LEVEL TROUGH OVER ALBERTA THIS MORNING
WILL DIG SEWD OVER NRN MT TODAY AND REACH THE DAKOTAS
OVERNIGHT...ACCOMPANIED BY A SURFACE COLD FRONT. MEANWHILE...THE
BAROCLINIC ZONE IN THE WAKE OF THE PREVIOUS MID LEVEL TROUGH IS NOW
LIFTING NWD FROM SD TOWARD CENTRAL/ERN ND. CONTINUED NWD ADVECTION
OF BOUNDARY LAYER DEWPOINTS IN THE LOW 60S BENEATH STEEP MID LEVEL
LAPSE RATES...IN CONJUNCTION WITH DAYTIME HEATING...WILL SUPPORT
LATE AFTERNOON MLCAPE VALUES OF 1500-2500 J/KG.

THUNDERSTORM DEVELOPMENT IS EXPECTED THIS EVENING AND WILL CONTINUE
OVERNIGHT ALONG THE COLD FRONT MOVING SEWD FROM ERN MT INTO THE WRN
DAKOTAS...IN PHASE WITH THE BELT OF LOW-MID LEVEL ASCENT DOWNSTREAM
FROM THE MID LEVEL TROUGH. THE MODERATE WARM SECTOR INSTABILITY AND
MODEST VERTICAL SHEAR ALONG THE FRONT WILL SUPPORT ORGANIZED
MULTICELL CLUSTERS...ALONG WITH SOME POTENTIAL FOR EMBEDDED BOW
AND/OR MARGINAL SUPERCELL STRUCTURES IN A BROKEN BAND ALONG THE
FRONT. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY SEVERE
THREATS THIS EVENING INTO TONIGHT.

...MID ATLANTIC COAST THIS EVENING INTO TONIGHT...
SEVERAL MID LEVEL VORTICITY CENTERS CONTINUE TO ROTATE AROUND THE
WEAK OH VALLEY-MID ATLANTIC LOW. SHORT TERM MODEL FORECASTS ARE
REASONABLY CONSISTENT IN SUGGESTING THAT THE OFFSHORE FRONTAL WAVE
WILL MOVE NWWD TO NEAR THE MID ATLANTIC COAST LATE TODAY AND
TONIGHT. THIS WILL RESULT IN A TENDENCY FOR LOW-LEVEL
MOISTENING/DESTABILIZATION NEAR THE COAST...AND AT LEAST SOME
POTENTIAL FOR ROTATING STORMS WITH WEAK SURFACE-BASED INSTABILITY
AND STRONG LOW-LEVEL SHEAR NEAR AND JUST N OF THE SURFACE LOW.
STILL...THE INLAND PROGRESSION OF THE UNSTABLE WARM SECTOR IS NOT
CERTAIN...THUS WILL MAINTAIN ONLY LOW TORNADO PROBABILITIES.

...NW GULF COAST THROUGH TONIGHT...
THUNDERSTORM COVERAGE IS EXPECTED TO INCREASE TODAY THE TX COASTAL
PLAINS AND NW GULF OF MEXICO...NEAR A SURFACE TROUGH AND DOWNSTREAM
FROM A WEAK UPPER TROUGH MOVING EWD FROM NRN MEXICO. WEAK MEAN FLOW
AND PW VALUES OF 2.25-2.50 INCHES WILL SUPPORT LOCALLY HEAVY
RAINFALL RATES WITH THESE STORMS...BUT THE SEVERE STORM THREAT WILL
REMAIN NEGLIGIBLE.

...AZ/NM THIS AFTERNOON/EVENING...
SCATTERED DIURNAL STORMS WILL OCCUR AGAIN...MAINLY OVER THE HIGHER
TERRAIN OF WRN NM INTO NE AZ. THUNDERSTORMS WILL BE SUPPORTED BY
DAYTIME HEATING...A ROUGHLY 0.25 INCH INCREASE IN PW VALUES DURING
THE PAST 24 HOURS...AND WEAK ASCENT WITH A SUBTLE MID LEVEL TROUGH
OVER AZ.

..THOMPSON/GARNER.. 09/10/2009

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