KSTO [090340]: Preliminary Local Storm Report

NWUS56 KSTO 090340 CCA
LSRSTO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
845 PM PDT SUN MAY 08 2011...CORRECTION FOR RAIN

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

0806 PM HEAVY RAIN REDDING 40.57N 122.36W
05/08/2011 M0.62 INCH SHASTA CA TRAINED SPOTTER

HEAVY RAIN FROM A THUNDERSTORM/ OCCASIONAL LIGHTNING

&&
POWELL

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KFSD [090321]: Preliminary Local Storm Report

NWUS53 KFSD 090321
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1021 PM CDT SUN MAY 08 2011

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

1018 PM HAIL WOONSOCKET 44.05N 98.27W
05/08/2011 E1.75 INCH SANBORN SD LAW ENFORCEMENT

MARBLE TO GOLF BALL HAIL

&&

$$

JCHAPMAN

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KSTO [090318]: Preliminary Local Storm Report

NWUS56 KSTO 090318 CCA
LSRSTO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
830 PM PDT SUN MAY 08 2011

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

0806 PM HEAVY RAIN REDDING 40.57N 122.36W
05/08/2011 M1.62 INCH SHASTA CA TRAINED SPOTTER

HEAVY RAIN FROM A THUNDERSTORM/ OCCASIONAL LIGHTNING

&&
POWELL

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KSTO [090317]: Preliminary Local Storm Report

NWUS56 KSTO 090317
LSRSTO

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
816 PM PDT SUN MAY 08 2011

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

0806 PM HEAVY RAIN REDDING 40.57N 122.36W
05/08/2011 M0.00 INCH SHASTA CA TRAINED SPOTTER

1.62 INCHES RAIN FROM A THUNDERSTORM/ OCCASIONAL LTG

0806 PM HEAVY RAIN REDDING 40.57N 122.36W
05/08/2011 M1.62 INCH SHASTA CA TRAINED SPOTTER

HEAVY RAIN FROM A THUNDERSTORM/ OCCASIONAL LIGHTNING

&&

$$

POWELL

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KEWX [090244]: Preliminary Local Storm Report

NWUS54 KEWX 090244
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
944 PM CDT SUN MAY 08 2011

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

0930 PM TSTM WND DMG 7 SSE ROCKSPRINGS 29.92N 100.17W
05/08/2011 EDWARDS TX TRAINED SPOTTER

ROCKSPRINGS AIRPORT AWOS MEASURED A WIND GUST TO 40
MPH. A HOME SOUTH OF THE AIRPORT HAD SOME DAMAGE TO THE
FRONT OF HER HOME.

&&

EVENT NUMBER EWX1100109

$$

PM

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KJAX [090232]: Preliminary Local Storm Report

NWUS52 KJAX 090232
LSRJAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1032 PM EDT SUN MAY 08 2011

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

1029 PM WILDFIRE YULEE 30.63N 81.57W
05/08/2011 NASSAU FL PUBLIC

HEAVY CONCENTRATION OF ASHES IS FALLING FROM SMOKE PLUME
OVERHEAD.

&&

$$

MKT

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KHNX [090221]: Preliminary Local Storm Report

NWUS56 KHNX 090221
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
721 PM PDT SUN MAY 08 2011

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

0614 PM NON-TSTM WND GST JAWBONE CANYON 35.29N 118.23W
05/08/2011 M61 MPH KERN CA MESONET

MEASURED BY THE JAWBONE CANYON RAWS.

0632 PM NON-TSTM WND GST 4 NW INDIAN WELLS CANYO 35.73N 117.94W
05/08/2011 M67 MPH KERN CA MESONET

MEASURED BY THE BLUE MAX RAWS.

0645 PM NON-TSTM WND GST 2 NNW INYOKERN 35.67N 117.83W
05/08/2011 M47 MPH KERN CA AWOS

MEASURED AT INYOKERN AIRPORT.

&&

$$

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KABR [090209]: Preliminary Local Storm Report

NWUS53 KABR 090209
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
909 PM CDT SUN MAY 08 2011

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

0901 PM HAIL 8 S PRESHO 43.79N 100.06W
05/08/2011 M1.75 INCH LYMAN SD TRAINED SPOTTER

&&

$$

EWY

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KABR [090154]: Preliminary Local Storm Report

NWUS53 KABR 090154
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
854 PM CDT SUN MAY 08 2011

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

0850 PM HAIL 10 S PRESHO 43.76N 100.06W
05/08/2011 M1.50 INCH LYMAN SD TRAINED SPOTTER

&&

$$

EWY

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MESO: Mesoscale Discussion 0702

ACUS11 KWNS 090148
SWOMCD
SPC MCD 090147
NEZ000-SDZ000-NDZ000-090245-

MESOSCALE DISCUSSION 0702
NWS STORM PREDICTION CENTER NORMAN OK
0847 PM CDT SUN MAY 08 2011

AREAS AFFECTED...SCNTRL ND TO NCNTRL NEB

CONCERNING...TORNADO WATCH 265...

VALID 090147Z - 090245Z

THE SEVERE WEATHER THREAT FOR TORNADO WATCH 265 CONTINUES.

LOW LEVEL WARM ADVECTION APPEARS TO BE PARTLY RESPONSIBLE FOR NEW
TSTM DEVELOPMENT ACROSS SRN ND. LATEST VIS IMAGERY SUGGESTS BACK
EDGE OF DEEPER CONVECTION IS OCCURRING OVER SIOUX COUNTY AND THIS
ACTIVITY SHOULD SPREAD/DEVELOP EWD OVER THE NEXT FEW HOURS. WITH A
FAIRLY SIGNIFICANT CAP IN PLACE ACROSS THE ERN DAKOTAS INTO ERN NEB
IT APPEARS ANY STORMS THAT SPREAD EAST OF ONGOING WW WILL QUICKLY
BECOME ELEVATED. THIS SHOULD LIMIT ANY TORNADIC POTENTIAL TO A
NARROW WEDGE OF INSTABILITY ACROSS SD INTO SCNTRL ND BEFORE BOUNDARY
LAYER DECOUPLES OVER THE NEXT FEW HOURS.

..DARROW.. 05/09/2011

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

ATTN...WFO...FSD...OAX...ABR...GID...BIS...LBF...UNR...

LAT...LON 46940248 46940018 41669772 41659985 46940248

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KABR [090144]: Preliminary Local Storm Report

NWUS53 KABR 090144
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
844 PM CDT SUN MAY 08 2011

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

0840 PM HAIL PRESHO 43.91N 100.06W
05/08/2011 E1.00 INCH LYMAN SD TRAINED SPOTTER

&&

$$

EWY

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KEWX [090129]: Preliminary Local Storm Report

NWUS54 KEWX 090129
LSREWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
829 PM CDT SUN MAY 08 2011

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

0731 PM TSTM WND DMG 1 W DEL RIO 29.38N 100.91W
05/08/2011 VAL VERDE TX ASOS

DEL RIO ASOS MEASURED A WIND GUST TO 55 MPH AND THERE
WAS SOME TREE LIMBS BLOWN DOWN.

&&

EVENT NUMBER EWX1100108

$$

PM

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KABR [090118]: Preliminary Local Storm Report

NWUS53 KABR 090118
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
818 PM CDT SUN MAY 08 2011

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

0803 PM TORNADO 8 SW PRESHO 43.83N 100.17W
05/08/2011 LYMAN SD TRAINED SPOTTER

0810 PM HAIL 7 S PRESHO 43.81N 100.06W
05/08/2011 M1.00 INCH LYMAN SD TRAINED SPOTTER

&&

$$

EWY

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KOUN [090109]: Preliminary Local Storm Report

NWUS54 KOUN 090109
LSROUN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
808 PM CDT SUN MAY 08 2011

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

0757 PM HAIL 3 S WICHITA FALLS 33.87N 98.50W
05/08/2011 E1.25 INCH WICHITA TX TRAINED SPOTTER

0803 PM HAIL WICHITA FALLS 33.91N 98.50W
05/08/2011 E1.00 INCH WICHITA TX AMATEUR RADIO

THE HAIL WAS REPORTED ON HIGHWAY 287 ON THE EAST SIDE OF
TOWN.

&&

$$

NWS NORMAN

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KHNX [090040]: Preliminary Local Storm Report

NWUS56 KHNX 090040
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
540 PM PDT SUN MAY 08 2011

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

1002 PM NON-TSTM WND GST LOS BANOS 37.06N 120.83W
05/07/2011 M36 MPH MERCED CA MESONET

MEASURED BY THE LOS BANOS RAWS.

1014 PM NON-TSTM WND GST JAWBONE CANYON 35.29N 118.23W
05/07/2011 M55 MPH KERN CA MESONET

MEASURED BY THE JAWBONE CANYON RAWS.

0143 AM NON-TSTM WND GST 3 W SAN LUIS DAM 37.05N 121.11W
05/08/2011 M40 MPH MERCED CA MESONET

MEASURED BY NWS-OWNED INSTRUMENTATION AT PACHECO PASS.

0313 AM NON-TSTM WND GST TWISSELMAN 35.36N 119.82W
05/08/2011 E35 MPH KERN CA MESONET

MEASURED BY THE TWISSELMAN RAWS.

0432 AM NON-TSTM WND GST 4 NW INDIAN WELLS CANYO 35.73N 117.94W
05/08/2011 M65 MPH KERN CA MESONET

MEASURED BY THE BLUE MAX RAWS.

1111 AM NON-TSTM WND GST 8 ENE EDWARDS AFB 34.95N 117.80W
05/08/2011 M50 MPH KERN CA MESONET

MEASURED BY EDWARDS AFB WIND TOWER 234.

1226 PM NON-TSTM WND GST INDIAN WELLS CANYON 35.69N 117.89W
05/08/2011 M47 MPH KERN CA MESONET

MEASURED BY THE INDIAN WELLS CANYON RAWS.

1256 PM NON-TSTM WND GST 17 E EDWARDS AFB 34.91N 117.64W
05/08/2011 M52 MPH KERN CA MESONET

MEASURED BY EDWARDS AFB WIND TOWER 390.

0112 PM NON-TSTM WND GST 7 SW EDWARDS AFB 34.84N 118.02W
05/08/2011 M52 MPH KERN CA MESONET

MEASURED BY EDWARDS AFB WIND TOWER 370.

0226 PM NON-TSTM WND GST LAUREL MOUNTAIN 35.48N 117.70W
05/08/2011 M46 MPH KERN CA MESONET

MEASURED BY THE LAURAL MOUNTAIN RAWS.

0238 PM NON-TSTM WND GST 8 NE EDWARDS AFB 34.99N 117.84W
05/08/2011 M51 MPH KERN CA MESONET

MEASURED BY EDWARDS AFB WIND TOWER 184.

0252 PM NON-TSTM WND GST RIDGECREST 35.63N 117.66W
05/08/2011 M48 MPH KERN CA MESONET

MEASURED BY RIDGECREST APRS K6YG.

0257 PM NON-TSTM WND GST 1 NNW KERNVILLE 35.77N 118.42W
05/08/2011 M42 MPH KERN CA MESONET

MEASURED BY THE RIVERKERN RAWS.

0259 PM NON-TSTM WND GST 11 NE EDWARDS AFB 35.02N 117.80W
05/08/2011 M52 MPH KERN CA MESONET

MEASURED BY EDWARDS AFB WIND TOWER 180.

0307 PM NON-TSTM WND GST 10 NE EDWARDS AFB 35.01N 117.81W
05/08/2011 M53 MPH KERN CA MESONET

MEASURED BY EDWARDS AFB WIND TOWER 230.

0325 PM NON-TSTM WND GST WALKER PASS 35.67N 118.06W
05/08/2011 M47 MPH KERN CA MESONET

MEASURED BY THE WALKER PASS EAST RAWS.

0332 PM NON-TSTM WND GST 1 E MOJAVE 35.05N 118.16W
05/08/2011 M64 MPH KERN CA MESONET

MEASURED BY EDWARDS AFB WIND TOWER 391.

0411 PM NON-TSTM WND GST 1 NE MOJAVE 35.06N 118.17W
05/08/2011 M46 MPH KERN CA MESONET

MEASURED BY NWS-OWNED INSTRUMENTATION AT THE NATIONAL
TEST PILOTS SCHOOL.

0414 PM NON-TSTM WND GST JAWBONE CANYON 35.29N 118.23W
05/08/2011 M54 MPH KERN CA MESONET

MEASURED BY THE JAWBONE CANYON RAWS.

0432 PM NON-TSTM WND GST RIDGECREST 35.63N 117.66W
05/08/2011 M51 MPH KERN CA MESONET

MEASURED BY THE RIDGECREST APRS CW9067.

0514 PM NON-TSTM WND GST JAWBONE CANYON 35.29N 118.23W
05/08/2011 M65 MPH KERN CA MESONET

MEASURED BY THE JAWBONE CANYON RAWS.

0532 PM NON-TSTM WND GST 4 NW INDIAN WELLS CANYO 35.73N 117.94W
05/08/2011 M55 MPH KERN CA MESONET

MEASURED BY THE BLUE MAX RAWS.

&&

$$

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 090026
SWODY1
SPC AC 090024

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0724 PM CDT SUN MAY 08 2011

VALID 090100Z - 091200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PARTS OF THE NRN PLAINS
AND MID-MO VALLEY...

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

...NRN PLAINS/MID-MO VALLEY...
THE LATEST WATER VAPOR IMAGERY SHOWS AN UPPER-LEVEL RIDGE OVER THE
MID TO UPPER MS VALLEY WITH SOUTHWEST FLOW IN PLACE FROM THE CNTRL
HIGH PLAINS NEWD INTO THE NRN PLAINS. A NARROW AXIS OF STRONG TO
EXTREME INSTABILITY EXISTS FROM ERN NEB NNWWD INTO CNTRL SD WHERE
SCATTERED THUNDERSTORM INITIATION IS EXPECTED OVER THE NEXT FEW
HOURS. MESOANALYSIS CURRENTLY ESTIMATES MLCAPE VALUES TO BE IN THE
3000 TO 5000 J/KG RANGE AND THIS SHOULD HELP STORMS TO RAPIDLY
BECOME SEVERE AS STORM COVERAGE INCREASES THIS EVENING. THE
INSTABILITY COMBINED WITH VERY STEEP MID-LEVEL LAPSE RATES OF 8.0 TO
9.0 C/KM ALONG WITH SUBSTANTIAL DIRECTIONAL SHEAR SHOULD RESULT IN
SUPERCELL DEVELOPMENT WITH A THREAT FOR LARGE HAIL. THE MORE
DOMINANT SUPERCELLS MAY HAVE AN ISOLATED TORNADO THREAT AND MAY
PRODUCE ISOLATED VERY LARGE HAIL OF GREATER THAN 2 INCHES IN
DIAMETER. THE GREATEST SEVERE THREAT SHOULD EXIST THIS EVENING AS
THE STORMS DEVELOP ALONG THE AXIS OF STRONGEST INSTABILITY BUT THE
SEVERE THREAT SHOULD CONTINUE THROUGH MUCH OF THE OVERNIGHT PERIOD
AS A LOW-LEVEL JET STRENGTHENS ACROSS THE REGION.

...SRN PLAINS...
SCATTERED STRONG TO SEVERE THUNDERSTORMS ARE ONGOING ALONG AN AXIS
OF STRONG INSTABILITY FROM CNTRL OK SSWWD INTO NORTH TX. THE STORMS
ARE BEING SUPPORTED BY LARGE-SCALE ASCENT ASSOCIATED WITH A
SHORTWAVE TROUGH EVIDENT ON WATER VAPOR IMAGERY...CURRENTLY MOVING
EWD TROUGH WEST TX. THIS CONVECTION SHOULD BE SUSTAINED FOR A FEW
MORE HOURS AS THE STORMS MOVE EWD INTO INCREASING INSTABILITY.
MLCAPE VALUES OF 2500 TO 3500 J/KG AND VERY STEEP MID-LEVEL LAPSE
RATES ALONG WITH 30 TO 40 KT OF DEEP LAYER SHEAR SHOULD RESULT IN A
THREAT FOR ISOLATED LARGE HAIL. A WIND DAMAGE THREAT MAY ALSO
ACCOMPANY THE MORE INTENSE CELLS DUE TO THE RELATIVELY LARGE
TEMP-DEWPOINT SPREADS.

...SRN APPALACHIAN MTNS/CAROLINAS...
ISOLATED THUNDERSTORMS ARE CURRENTLY ONGOING IN ERN TN AND WRN SC
LOCATED ALONG THE NERN EDGE OF MODERATE INSTABILITY. THIS CONVECTION
IS LOCATED IN NORTHWEST FLOW ALOFT WITH ABOUT 40 KT OF DEEP LAYER
SHEAR ESTIMATED BY MESOSCALE ANALYSIS. THIS SHOULD BE ENOUGH FOR A
MARGINAL WIND DAMAGE THREAT BUT THE THREAT SHOULD DIMINISH QUICKLY
AS SFC TEMPS BEGIN TO COOL OFF LATER THIS EVENING.

..BROYLES.. 05/09/2011

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KOUN [090008]: Preliminary Local Storm Report

NWUS54 KOUN 090008
LSROUN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
708 PM CDT SUN MAY 08 2011

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

0653 PM HAIL BURKBURNETT 34.08N 98.56W
05/08/2011 E1.75 INCH WICHITA TX PUBLIC

THE HAIL WAS REPORTED ON W 3RD IN BURKBURNETT.

&&

$$

NWS NORMAN

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KOUN [082346]: Preliminary Local Storm Report

NWUS54 KOUN 082346
LSROUN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
646 PM CDT SUN MAY 08 2011

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

0639 PM HAIL SEYMOUR 33.60N 99.26W
05/08/2011 E1.00 INCH BAYLOR TX PUBLIC

&&

$$

NWS NORMAN

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KOUN [082317]: Preliminary Local Storm Report

NWUS54 KOUN 082317
LSROUN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
617 PM CDT SUN MAY 08 2011

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

0613 PM HAIL LAWTON 34.60N 98.42W
05/08/2011 E1.00 INCH COMANCHE OK TRAINED SPOTTER

THE HAIL WAS REPORTED AT 82ND STREET AND LEE BOULEVARD.

&&

$$

NWS NORMAN

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WATCHES: Tornado Watch Number 265

WWUS20 KWNS 082313
SEL5
SPC WW 082313
NDZ000-NEZ000-SDZ000-090600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 265
NWS STORM PREDICTION CENTER NORMAN OK
615 PM CDT SUN MAY 8 2011

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

SOUTH CENTRAL NORTH DAKOTA
NORTHERN NEBRASKA
CENTRAL SOUTH DAKOTA

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 615 PM UNTIL
100 AM CDT.

TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 55 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES WEST NORTHWEST OF
BISMARCK NORTH DAKOTA TO 20 MILES EAST SOUTHEAST OF BURWELL
NEBRASKA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.

DISCUSSION...ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED TO
FORM THIS EVENING ALONG THE INSTABILITY AXIS EXTENDING FROM NORTHERN
NEB INTO SOUTH CENTRAL ND. WEAKENING INHIBITION AND WEAK LOW LEVEL
WARM ADVECTION WILL HELP INITIATION. THOSE STORMS THAT FORM WILL BE
IN ENVIRONMENT OF FAVORABLE LOW LEVEL AND DEEP LAYER VERTICAL SHEAR
TO BECOME SLOW-MOVING SUPERCELLS CAPABLE OF VERY LARGE HAIL AND
DAMAGING WINDS. ISOLATED TORNADOES WILL ALSO BE POSSIBLE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27015.

...HART

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KABR [082250]: Preliminary Local Storm Report

NWUS53 KABR 082250
LSRABR

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
550 PM CDT SUN MAY 08 2011

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

0537 PM HAIL 5 NNW SISSETON 45.73N 97.09W
05/08/2011 E1.00 INCH ROBERTS SD PUBLIC

&&

$$

EWY

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KABQ [082223]: Preliminary Local Storm Report

NWUS55 KABQ 082223
LSRABQ

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ALBUQUERQUE NM
422 PM MDT SUN MAY 08 2011

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

0200 PM TSTM WND DMG 2 SW HAGERMAN 33.09N 104.35W
05/06/2011 CHAVES NM TRAINED SPOTTER

THIRD OF METAL ROOF TORN OFF NEAR LINCOLN AND OTTOWA

&&

EVENT NUMBER ABQ1101069

$$

GUYER

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MESO: Mesoscale Discussion 0701

ACUS11 KWNS 082206
SWOMCD
SPC MCD 082206
SDZ000-NEZ000-NDZ000-082300-

MESOSCALE DISCUSSION 0701
NWS STORM PREDICTION CENTER NORMAN OK
0506 PM CDT SUN MAY 08 2011

AREAS AFFECTED...NCNTRL NEB TO SCNTRL ND

CONCERNING...SEVERE POTENTIAL...WATCH POSSIBLE

VALID 082206Z - 082300Z

CU FIELD IS GRADUALLY EXPANDING/DEEPENING WITHIN POST DRYLINE
ENVIRONMENT ACROSS THE NEB PANHANDLE. THIS CONVECTION IS INDICATIVE
OF THE VERY STEEP LAPSE RATES IN PLACE ACROSS THE CNTRL HIGH PLAINS
WHERE SFC TEMPERATURES HAVE WARMED INTO THE MID 80S. LATEST
THINKING IS SUSTAINED CONVERGENCE ALONG THE DRYLINE SHOULD PROVE
FAVORABLE FOR ENCOURAGING SUSTAINED DEEP UPDRAFTS/TSTMS BY 00Z-02Z.
GIVEN THE VERY UNSTABLE AIRMASS IN PLACE ANY STORMS THAT DEVELOP
WILL LIKELY PRODUCE VERY LARGE HAIL...IN ADDITION TO ISOLATED
TORNADOES WITH EARLY SUPERCELL ACTIVITY.

..DARROW.. 05/08/2011

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

ATTN...WFO...FSD...ABR...BIS...LBF...UNR...

LAT...LON 42480138 44470211 46600135 46039925 42279897 42480138

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KSGX [082134]: Preliminary Local Storm Report

NWUS56 KSGX 082134
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
234 PM PDT SUN MAY 08 2011

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

0730 AM NON-TSTM WND GST 10 NW PALM SPRINGS 33.95N 116.66W
05/08/2011 M63 MPH RIVERSIDE CA MESONET

WHITE WATER RAWS STATION WWAC1 RECORDED A WIND GUST OF 63
MPH AT APPROXIMATELY 730 AM.

&&

$$

MOKER

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KCHS [082059]: Preliminary Local Storm Report

NWUS52 KCHS 082059
LSRCHS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHARLESTON SC
458 PM EDT SUN MAY 08 2011

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

0443 PM WILDFIRE 3 SSW WALTHOURVILLE 31.73N 81.65W
05/08/2011 E250 ACRE LONG GA NWS EMPLOYEE

INFORMATION RELAYED BY HONEY PRARIE FIRE INCIDENT
METEOROLOGIST.

&&

EVENT NUMBER CHS1100370

$$

04

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MESO: Mesoscale Discussion 0700

ACUS11 KWNS 082057
SWOMCD
SPC MCD 082057
TXZ000-OKZ000-082300-

MESOSCALE DISCUSSION 0700
NWS STORM PREDICTION CENTER NORMAN OK
0357 PM CDT SUN MAY 08 2011

AREAS AFFECTED...PORTIONS OF SWRN OK AND WRN PORTIONS OF NORTH TX

CONCERNING...SEVERE POTENTIAL...WATCH UNLIKELY

VALID 082057Z - 082300Z

AN ISOLATED SVR STORM OR TWO COULD DEVELOP ACROSS PORTIONS OF SWRN
OK AND WRN PORTIONS OF NORTH TX.

A DRYLINE CONTINUES TO SHARPEN FROM CNTRL OK INTO WRN PORTIONS OF
NORTH TX...EXTENDING FROM 15 W CHK TO THE RED RIVER 20 W SPS TO 25
ENE SJT AND FARTHER SW INTO SWRN TX. A BROAD MOIST SECTOR EXISTS
EAST OF THE DRYLINE WHERE SFC DEWPOINTS ARE IN THE MIDDLE 60S TO
NEAR 70. OVERLAYING THIS MOISTURE...VERY STEEP MID-LEVEL LAPSE RATES
/APPROACHING DRY ADIABATIC PER 12Z OBSERVED SOUNDINGS AT KOUN AND
KDDC/ IN ASSOCIATION WITH THE STRONG ELEVATED MIXED-LAYER ARE
CONTRIBUTING TO A VERY UNSTABLE AIR MASS EAST OF THE DRYLINE /MLCAPE
VALUES AOA 3000 J PER KG/. THUS FAR...STRONG CAPPING EAST OF THE
DRYLINE IS SUPPRESSING THE DEVELOPMENT.

CONTINUED STRONG INSOLATION OVER THE WRN PERIPHERY OF THE RICH
MOISTURE AXIS AND ERN PERIPHERY OF THE THERMAL AXIS COULD REDUCE
CONVECTIVE INHIBITION SUFFICIENTLY TO SUPPORT THE DEVELOPMENT OF A
THUNDERSTORM OR TWO ALONG AND IMMEDIATELY EAST OF THE DRYLINE. THERE
IS MUCH UNCERTAINTY IN THIS POTENTIAL...OWING TO LACK OF SUPPORT
FROM CONVECTIVE-ALLOWING MODELS AND UNCERTAINTY IN THE DEGREE OF
SUPPRESSION OF CONVECTIVE INHIBITION. HOWEVER...THE PRESENCE OF A
DEVELOPING CUMULUS FIELD NEAR THE DRYLINE...WHERE ENHANCED
CONVERGENCE IS PRESENT AND RAPID REFRESH FORECAST SOUNDINGS INDICATE
CONVECTIVE INHIBITION AOB 25 J/KG...LEND CREDENCE TO THIS THREAT
/ALBEIT SMALL/.

ANY STORM THAT FORMS COULD QUICKLY BECOME SEVERE...GIVEN THE DEGREE
OF POTENTIAL UPWARD BUOYANCY PREVIOUSLY MENTIONED. WHILE
LOW/MID-LEVEL FLOW IS NOT PARTICULARLY IMPRESSIVE...MODERATE
UPPER-LEVEL FLOW COUPLED WITH LARGE STORM DEPTHS WILL YIELD
EFFECTIVE BULK SHEAR MAGNITUDES FROM 35 TO 40 KT TO SUPPORT
SUPERCELLULAR STRUCTURES. THIS WILL ESPECIALLY BE THE CASE IF ANY
STORM IS STEERED INTO THE DEEPER MOISTURE EAST OF THE DRYLINE. DMGG
WINDS AND LARGE HAIL /POTENTIALLY VERY LARGE/ WILL BE THE MAIN
THREATS WITH ANY STORMS. THE ABSENCE OF STRONGER LOW-LEVEL FLOW PER
AREA VWPS IS EXPECTED TO MITIGATE THE TORNADO POTENTIAL. GIVEN THAT
ANY FORCING FOR CONVECTION WILL LARGELY BE TIED TO THE DRYLINE
/WHICH IS EXPECTED TO MAKE LITTLE EWD PROGRESS THROUGH THIS
EVENING/...GIVEN THE CONVECTIVE INHIBITION EAST OF THE DRYLINE...AND
GIVEN ONLY ISOLATED CONVECTIVE COVERAGE...THE SPATIAL EXTENT OF ANY
SEVERE THREAT IS EXPECTED TO BE LOW.

..COHEN.. 05/08/2011

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

ATTN...WFO...FWD...OUN...SJT...

LAT...LON 33429790 32329846 31669960 31960020 32530008 33299963
34299911 34759867 34949835 34929803 34809775 34219778
33429790

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KHNX [082055]: Preliminary Local Storm Report

NWUS56 KHNX 082055
LSRHNX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA
154 PM PDT SUN MAY 08 2011

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

0323 PM NON-TSTM WND GST 1 E MOJAVE 35.05N 118.16W
05/07/2011 M51.00 MPH KERN CA MESONET

EDWARDS WIND TOWER 391

0313 AM NON-TSTM WND GST 1 E MOJAVE 35.05N 118.16W
05/08/2011 M57.00 MPH KERN CA MESONET

EDWARDS WIND TOWER 391

1236 PM NON-TSTM WND GST 3 N RIDGECREST 35.67N 117.66W
05/08/2011 M53.00 MPH KERN CA ASOS

KNID

&&

$$

JBRO

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 082000
SWODY1
SPC AC 081959

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0259 PM CDT SUN MAY 08 2011

VALID 082000Z - 091200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE NORTHERN
PLAINS/MIDDLE MO VALLEY...

...NORTHERN PLAINS/MIDDLE MO VALLEY TO MIDWEST...
RELATIVELY LITTLE CHANGE TO PRIOR FORECAST REASONING/SEVERE
PROBABILITIES. LATEST EXPERIMENTAL HRRR GUIDANCE IN ACCORDANCE WITH
THE 12Z NAM/GFS/ECMWF CONTINUE TO SUPPORT THE NOTION OF SCATTERED
DEEP CONVECTIVE DEVELOPMENT LATE THIS AFTERNOON/EARLY EVENING WITHIN
A NEAR WARM FRONTAL CORRIDOR ACROSS CENTRAL SD/EASTERN
NEB...GENERALLY NEAR THE PIERRE VICINITY IN SD AND AS FAR SOUTH AS
I-80 IN EAST-CENTRAL NEB. AS THE CU FIELD CONTINUES TO GRADUALLY
INCREASE IN THIS SAME CORRIDOR AT MID AFTERNOON...REGIONAL WIND
PROFILERS ARE NOW REFLECTING A MORE CYCLONIC INFLUENCE AT MID LEVELS
IN THE WAKE OF THE EASTWARD MIGRATING SHORTWAVE RIDGING. A FLOW
WEAKNESS IS NOTED IN THE MID/UPPER TROPOSPHERIC WINDS...BUT
NONETHELESS...AMPLE LOW/MID LEVEL VEERING WILL SUPPORT INITIAL MODAL
SUPERCELLS CAPABLE OF LARGE HAIL AND POSSIBLY A COUPLE OF TORNADOES.

OTHER STRONG/SEVERE TSTM DEVELOPMENT CANNOT BE RULED OUT A BIT
FARTHER WEST ACROSS THE CENTRAL PLAINS INCLUDING PORTIONS OF
WEST-CENTRAL NEB...WHERE AN INCREASINGLY DEEP MIXED BOUNDARY LAYER
EXISTS IN VICINITY OF A SHARPENING DRYLINE/SURFACE TROUGH ATTENDANT
TO A HIGH PLAINS SURFACE LOW. OTHERWISE...SEE PREVIOUS DISCUSSION
BELOW.

...WEST-CENTRAL PORTIONS OF OK/TX...
EVEN WITH STRONG LOW LEVEL HEATING /100+ F/ OCCURRING TO THE WEST OF
THE DRYLINE...THE STRENGTH OF THE ELEVATED MIXED LAYER IMPLIES ANY
TSTM DEVELOPMENT SHOULD REMAIN ISOLATED LATE THIS AFTERNOON/EARLY
EVENING IN VICINITY OF THE DRYLINE.

..GUYER.. 05/08/2011

.PREV DISCUSSION... /ISSUED 1119 AM CDT SUN MAY 08 2011/

...SYNOPSIS...
PAC NW UPPER LOW WILL CONTINUE DROPPING SSEWD INTO NWRN NV BY 12Z
MON AS PRIMARY TROUGH REMAINS W OF ROCKIES. DOWNSTREAM RIDGE SLOWLY
AMPLIFIES AND SHIFTS EWD TO VICINITY MS RIVER VALLEY. WITH ONLY A
MODEST SWLY FLOW ALOFT OUT INTO THE PLAINS ON E SIDE OF WRN
TROUGH...ANY SEVERE THUNDERSTORM POTENTIAL WILL BE DRIVEN BY LOW
LEVEL FEATURES SUCH AS STRONG SURFACE HEATING AND LIFT PROVIDED BY
CONVERGENCE ALONG DRY LINE AND TO THE NORTH OF WARM FRONT CURRENTLY
FROM CENTRAL NEB SEWD TO NRN MO.

...NRN HIGH PLAINS EWD/SEWD INTO THE UPPER MS AND MID/LOWER MO
VALLEYS...

WITH SURFACE LOW DEVELOPING NWD INTO WRN NEB ASSOCIATED DRYLINE WILL
BECOME BETTER-DEFINED BY AFTERNOON...EXTENDING FROM SURFACE LOW
THROUGH WRN NEB INTO CNTRL KS. MEANWHILE...WARM FRONT CURRENTLY
LIFTING NWD SHOULD CONTINUE TO MOVE/DEVELOP NWD...LIKELY EXTENDING
FROM SURFACE LOW EWD THROUGH CNTRL NEB INTO NERN KS LATER THIS
AFTERNOON.

LATEST SUITE OF MESOSCALE AND CONVECTION-ALLOWING MODEL GUIDANCE
CONTINUES TO PROVIDE CONSIDERABLE UNCERTAINTY ON TSTM EVOLUTION THIS
AFTERNOON AND EVENING. NONETHELESS...THE MAINTENANCE OF A 30-40 KT
SLY LLJ ACROSS THE GREAT PLAINS WILL SUPPORT THE CONTINUED NWD FLUX
OF AN INCREASINGLY MOIST BOUNDARY LAYER WITH AFTERNOON DEWPOINTS
RANGING FROM MID/UPPER 50S OVER S-CNTRL SD TO MID 60S ALONG WARM
FRONT IN CNTRL/ERN NEB. WHEN COUPLED WITH MIDLEVEL LAPSE RATES
APPROACHING DRY ADIABATIC AND STRONG DAYTIME HEATING...EXPECT WARM
SECTOR AIR MASS TO BECOME MODERATELY TO STRONGLY UNSTABLE WITH
MLCAPE VALUES RANGING FROM 1000-1500 J/KG IN WRN SD TO AS HIGH AS
3000-3500 J/KG ACROSS S-CNTRL/SERN NEB.

THE ONLY SOMEWHAT CONSISTENT MODEL SIGNAL HAS BEEN FOR INITIATION OF
SEVERE THUNDERSTORMS NEAR WARM FRONT LATER THIS AFTERNOON ACROSS ERN
NEB INTO SRN SD. SUPERCELLS WILL BE THE PRIMARY INITIAL MODE THIS
AREA RESULTING IN VERY LARGE HAIL. ADDITIONALLY AT LEAST AN ISOLATED
TORNADO THREAT WOULD BE LIKELY GIVEN THE AMOUNT OF INSTABILITY...LOW
LEVEL VEERING SHEAR PROFILES VICINITY FRONTAL ZONE.

STORM FORMATION APPEARS MORE LIKELY BY THIS EVENING N OF SURFACE LOW
AND WARM FRONT FROM SERN MT EWD ACROSS ND...NRN SD INTO CNTRL/SRN MN
SEWD TOWARD THE MID MS VALLEY. THIS WILL BE IN
RESPONSE TO A BROAD SWATH OF INCREASING WAA/ISENTROPIC ASCENT
OCCURRING AS THE LOW LEVEL JET INTENSIFIES. THIS AREA WOULD SEE A
MORE ELEVATED SEVERE THREAT /INCLUDING SUPERCELLS/ CAPABLE OF LARGE
HAIL.

...CENTRAL/SRN PLAINS VICINITY DRY LINE...

ALTHOUGH RATHER...SHALLOW MOISTURE CONTINUES TO STREAM NWD TO THE E
OF SLOWLY DEEPENING SURFACE LOW CENTRAL HIGH PLAINS. A PRONOUNCED
EML WITH LAPSE RATES NEAR DRY ADIABATIC RESIDES ABOVE THE MOIST
BOUNDARY LAYER FROM SRN PLAINS NWD TO SRN SD.

DRY LINE MIXES EWD THIS AFTERNOON INTO CENTRAL KS SWD THRU WRN OK AS
TEMPS WARM THROUGH THE 90S. WHILE CINH WILL BECOME NEGLIGIBLE AS
MUCAPES CLIMB TO 3000 J/KG OR HIGHER IMMEDIATELY E OF DRY LINE
KS/OK...THE SEVERE POTENTIAL SHOULD REMAIN QUITE CONDITIONAL GIVEN
LACK OF UPPER SUPPORT. ANY STORM THAT INITIATES FROM SRN NEB TO OK
WOULD QUICKLY BECOME SEVERE WITH A LARGE HAIL/WIND THREAT. HOWEVER
EWD EXTENT OF THREAT WILL BE LIMITED AS STORMS MOVE QUICKLY EWD INTO
AREAS OF GREATER CINH THIS EVENING.

...TN VALLEY TO SERN ATLANTIC COAST...

BUILDING SURFACE RIDGE FROM THE LOWER GREAT LAKES SWD THROUGH THE
MID ATLANTIC STATES WILL RESULT IN THE SWD PROGRESSION OF A WEAK
BACKDOOR COLD FRONT THROUGH THE SRN APPALACHIANS WHICH WILL
EVENTUALLY MERGE WITH WARM FRONT LIFTING NWD THROUGH THE LOWER MS
VALLEY. THIS BOUNDARY IS EXPECTED TO SERVE AS THE FOCUS FOR
ISOLATED TO SCATTERED TSTM DEVELOPMENT THIS AFTERNOON.

12Z OBSERVED SOUNDINGS FROM AR EWD ACROSS THE GULF COAST SHOW THAT
AN EML HAS SPREAD EWD ACROSS THE REGION WITH MIDLEVEL LAPSE RATES OF
7.0-7.5 C/KM. WHEN COUPLED WITH A MOISTENING BOUNDARY LAYER AND
DAYTIME HEATING...ENVIRONMENT IS EXPECTED TO BECOME MODERATELY
UNSTABLE WITH MLCAPE VALUES RANGING FROM 1500-2500 J/KG OVER THE MID
SOUTH TO AROUND 1000 J/KG ALONG THE SAVANNAH RIVER. GIVEN THE
MODESTLY STRONG NWLY WIND FIELD OBSERVED THIS MORNING IN THE MID TO
UPPER-TROPOSPHERE...SETUP MAY YIELD A FEW FORWARD-PROPAGATING STORM
CLUSTERS CAPABLE OF DAMAGING WINDS AND SOME HAIL.

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 081732
SWODY2
SPC AC 081730

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1230 PM CDT SUN MAY 08 2011

VALID 091200Z - 101200Z

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

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PORTIONS OF THE
MIDWEST...

...SYNOPSIS...
AN INCREASINGLY AMPLIFIED/BLOCKY LONGWAVE UPPER FLOW REGIME WILL
PREVAIL INTO MONDAY OVER THE CONUS...WITH A NEARLY STATIONARY CLOSED
LOW OVER THE WESTERN ATLANTIC AND A BROAD TROUGH OVER THE WESTERN
STATES. IN REGARDS TO THE WESTERN CONUS UPPER TROUGH...A LEAD
SHORTWAVE PORTION OF THIS TROUGH IS EXPECTED TO ADVANCE
NORTHEASTWARD FROM THE CENTRAL ROCKIES TO THE NORTHERN HIGH PLAINS
ON MONDAY...WHILE THE BASAL PORTION OF THE WEST TROUGH DIGS
SOUTHWARD OVER SOUTHERN CA AND THE LOWER CO RIVER VALLEY.

...NORTHERN PLAINS...
AN INFLUX OF LOW LEVEL MOISTURE WILL CONTINUE TO SURGE CYCLONICALLY
ON THE EASTERN/NORTHERN PERIPHERY OF A DEEPENING/GRADUAL
EAST-NORTHEASTWARD SHIFTING NORTH-CENTRAL HIGH PLAINS SURFACE
LOW...AS A WARM FRONT BECOMES INCREASINGLY ESTABLISHED NORTHWARD
INTO EXTREME NORTHERN NEB AND SOUTHERN/CENTRAL SD. WITH INCREASING
DYNAMIC FORCING FOR ASCENT AS AIDED BY A LEAD SHORTWAVE TROUGH
ADVANCING FROM THE CENTRAL ROCKIES TO THE NORTHERN HIGH
PLAINS...SURFACE BASED TSTMS ARE LIKELY TO DEVELOP/INCREASE BY
MID/LATE AFTERNOON...INITIALLY IN THE LEE OF THE ROCKIES FRONT RANGE
AND/OR VICINITY OF THE BLACK HILLS. A SUBSEQUENT UPSWING IN DEEP
CONVECTIVE COVERAGE/VIGOR IS ANTICIPATED INTO EARLY/MID EVENING AS
STORMS DEVELOP EAST-NORTHEASTWARD ACROSS SD IN VICINITY OF THE WARM
FRONT/LOW-LEVEL MOIST AXIS. INCREASINGLY STRONG/DIFFLUENT FLOW ALOFT
WILL SUPPORT SUPERCELLS CAPABLE OF LARGE HAIL...IN ADDITION TO THE
POSSIBILITY OF TORNADOES. A NOCTURNALLY STRENGTHENING LOW LEVEL
JET/ISENTROPIC LIFT REGIME NORTH OF THE WARM FRONT WILL SUPPORT AT
LEAST AN ISOLATED SEVERE HAIL THREAT CONTINUING THROUGH THE NIGHT
FROM THE EASTERN DAKOTAS INTO MN.

...MIDWEST/MS VALLEY/LOWER OH VALLEY...
SPREAD AMONGST NUMERICAL GUIDANCE AND THE POTENTIAL DEGREE OF
AFTERNOON CAPPING CONTINUES TO LIMIT FORECAST CONFIDENCE FOR MONDAY.
THAT SAID...THE MOST LIKELY SCENARIO IS FOR CLUSTERS OF ELEVATED
TSTMS TO BE ONGOING ACROSS PORTIONS OF IA AND/OR IL/EASTERN MO
MONDAY MORNING...WITH SOME OF THESE STORMS CAPABLE OF SEVERE HAIL. A
VEERING LOW LEVEL JET WILL PROBABLY MAINTAIN AT LEAST ELEVATED
STORMS EAST-NORTHEAST TOWARD THE GREAT LAKES REGION DURING THE DAY.

THEREAFTER...THE ELEVATED MIXED LAYER NEAR THE WARM FRONT WILL ONLY
STRENGTHEN DURING THE DAY...WITH CONSIDERABLE UNCERTAINTY REGARDING
THE LIKELIHOOD OF SURFACE BASED TSTM DEVELOPMENT DURING THE
AFTERNOON/EARLY EVENING. THAT SAID...THERE IS CONDITIONAL-TYPE
CONCERN THAT ISOLATED SURFACE BASED TSTMS COULD DEVELOP SOMEWHERE IN
A NEAR WARM FRONTAL CORRIDOR FROM IA INTO CENTRAL IL. AT LEAST IN A
CONDITIONAL SENSE...VERY STEEP MID LEVEL LAPSE RATES AND FAVORABLE
EFFECTIVE SHEAR WOULD BE FAVORABLE FOR SUPERCELLS CAPABLE OF LARGE
HAIL/DAMAGING WINDS AND PERHAPS A FEW TORNADOES.

...SOUTHEAST STATES...
BACKDOOR FRONTAL BOUNDARY WILL CONTINUE TO SETTLE SOUTHWESTWARD FROM
SC TO GA/FAR NORTH FL ON MONDAY. GIVEN A WEAK CAP...SCATTERED TSTMS
ARE LIKELY TO DEVELOP ALONG/JUST SOUTHWEST OF THE SURFACE FRONT
DURING THE AFTERNOON WITHIN A MOIST/MODERATELY UNSTABLE BOUNDARY
LAYER. AIDED BY 20-30 KT NORTHWESTERLY MID LEVEL FLOW...THESE
MULTICELLULAR TSTMS MAY ORGANIZE INTO SOUTHWARD-MOVING LINEAR
CLUSTERS CAPABLE OF DAMAGING WINDS/SOME SEVERE HAIL.

...WEST-CENTRAL TX...
12Z BASED NUMERICAL GUIDANCE IMPLIES THAT GRADUAL HEIGHT FALLS WILL
OCCUR ON MONDAY IN ASSOCIATION WITH A LEAD IMPULSE ACROSS WEST TX.
VARIOUS NUMERICAL GUIDANCE SUCH AS THE 12Z WRF-NAM AND VARIOUS 09Z
SREF MEMBERSHIP IMPLY ISOLATED TSTM DEVELOPMENT IS POSSIBLE IN
VICINITY OF THE DRYLINE MONDAY LATE AFTERNOON/EARLY
EVENING...ALTHOUGH SOME OF THIS MAY PARTIALLY BE ATTRIBUTABLE TO THE
CAP BEING AGGRESSIVELY ERODED BY THE BMJ SCHEME VIA MID LEVEL
MOISTENING. REGARDLESS...AT LEAST A LOW PROBABILITY OF TSTMS SEEMS
WARRANTED...AND THIS REGION WILL BE SUBSEQUENTLY REEVALUATED FOR
WHAT COULD BE AN ISOLATED SEVERE RISK IN THE FORM OF HAIL IN
VICINITY OF THE DRYLINE.

..GUYER.. 05/08/2011

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 081621
SWODY1
SPC AC 081619

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1119 AM CDT SUN MAY 08 2011

VALID 081630Z - 091200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM PORTIONS OF THE NRN HIGH
PLAINS SEWD THROUGH THE MID MO VALLEY...

...SYNOPSIS...
PAC NW UPPER LOW WILL CONTINUE DROPPING SSEWD INTO NWRN NV BY 12Z
MON AS PRIMARY TROUGH REMAINS W OF ROCKIES. DOWNSTREAM RIDGE SLOWLY
AMPLIFIES AND SHIFTS EWD TO VICINITY MS RIVER VALLEY. WITH ONLY A
MODEST SWLY FLOW ALOFT OUT INTO THE PLAINS ON E SIDE OF WRN
TROUGH...ANY SEVERE THUNDERSTORM POTENTIAL WILL BE DRIVEN BY LOW
LEVEL FEATURES SUCH AS STRONG SURFACE HEATING AND LIFT PROVIDED BY
CONVERGENCE ALONG DRY LINE AND TO THE NORTH OF WARM FRONT CURRENTLY
FROM CENTRAL NEB SEWD TO NRN MO.

...NRN HIGH PLAINS EWD/SEWD INTO THE UPPER MS AND MID/LOWER MO
VALLEYS...

WITH SURFACE LOW DEVELOPING NWD INTO WRN NEB ASSOCIATED DRYLINE WILL
BECOME BETTER-DEFINED BY AFTERNOON...EXTENDING FROM SURFACE LOW
THROUGH WRN NEB INTO CNTRL KS. MEANWHILE...WARM FRONT CURRENTLY
LIFTING NWD SHOULD CONTINUE TO MOVE/DEVELOP NWD...LIKELY EXTENDING
FROM SURFACE LOW EWD THROUGH CNTRL NEB INTO NERN KS LATER THIS
AFTERNOON.

LATEST SUITE OF MESOSCALE AND CONVECTION-ALLOWING MODEL GUIDANCE
CONTINUES TO PROVIDE CONSIDERABLE UNCERTAINTY ON TSTM EVOLUTION THIS
AFTERNOON AND EVENING. NONETHELESS...THE MAINTENANCE OF A 30-40 KT
SLY LLJ ACROSS THE GREAT PLAINS WILL SUPPORT THE CONTINUED NWD FLUX
OF AN INCREASINGLY MOIST BOUNDARY LAYER WITH AFTERNOON DEWPOINTS
RANGING FROM MID/UPPER 50S OVER S-CNTRL SD TO MID 60S ALONG WARM
FRONT IN CNTRL/ERN NEB. WHEN COUPLED WITH MIDLEVEL LAPSE RATES
APPROACHING DRY ADIABATIC AND STRONG DAYTIME HEATING...EXPECT WARM
SECTOR AIR MASS TO BECOME MODERATELY TO STRONGLY UNSTABLE WITH
MLCAPE VALUES RANGING FROM 1000-1500 J/KG IN WRN SD TO AS HIGH AS
3000-3500 J/KG ACROSS S-CNTRL/SERN NEB.

THE ONLY SOMEWHAT CONSISTENT MODEL SIGNAL HAS BEEN FOR INITIATION OF
SEVERE THUNDERSTORMS NEAR WARM FRONT LATER THIS AFTERNOON ACROSS ERN
NEB INTO SRN SD. SUPERCELLS WILL BE THE PRIMARY INITIAL MODE THIS
AREA RESULTING IN VERY LARGE HAIL. ADDITIONALLY AT LEAST AN ISOLATED
TORNADO THREAT WOULD BE LIKELY GIVEN THE AMOUNT OF INSTABILITY...LOW
LEVEL VEERING SHEAR PROFILES VICINITY FRONTAL ZONE.

STORM FORMATION APPEARS MORE LIKELY BY THIS EVENING N OF SURFACE LOW
AND WARM FRONT FROM SERN MT EWD ACROSS ND...NRN SD INTO CNTRL/SRN MN
SEWD TOWARD THE MID MS VALLEY. THIS WILL BE IN
RESPONSE TO A BROAD SWATH OF INCREASING WAA/ISENTROPIC ASCENT
OCCURRING AS THE LOW LEVEL JET INTENSIFIES. THIS AREA WOULD SEE A
MORE ELEVATED SEVERE THREAT /INCLUDING SUPERCELLS/ CAPABLE OF LARGE
HAIL.

...CENTRAL/SRN PLAINS VICINITY DRY LINE...

ALTHOUGH RATHER...SHALLOW MOISTURE CONTINUES TO STREAM NWD TO THE E
OF SLOWLY DEEPENING SURFACE LOW CENTRAL HIGH PLAINS. A PRONOUNCED
EML WITH LAPSE RATES NEAR DRY ADIABATIC RESIDES ABOVE THE MOIST
BOUNDARY LAYER FROM SRN PLAINS NWD TO SRN SD.

DRY LINE MIXES EWD THIS AFTERNOON INTO CENTRAL KS SWD THRU WRN OK AS
TEMPS WARM THROUGH THE 90S. WHILE CINH WILL BECOME NEGLIGIBLE AS
MUCAPES CLIMB TO 3000 J/KG OR HIGHER IMMEDIATELY E OF DRY LINE
KS/OK...THE SEVERE POTENTIAL SHOULD REMAIN QUITE CONDITIONAL GIVEN
LACK OF UPPER SUPPORT. ANY STORM THAT INITIATES FROM SRN NEB TO OK
WOULD QUICKLY BECOME SEVERE WITH A LARGE HAIL/WIND THREAT. HOWEVER
EWD EXTENT OF THREAT WILL BE LIMITED AS STORMS MOVE QUICKLY EWD INTO
AREAS OF GREATER CINH THIS EVENING.

...TN VALLEY TO SERN ATLANTIC COAST...

BUILDING SURFACE RIDGE FROM THE LOWER GREAT LAKES SWD THROUGH THE
MID ATLANTIC STATES WILL RESULT IN THE SWD PROGRESSION OF A WEAK
BACKDOOR COLD FRONT THROUGH THE SRN APPALACHIANS WHICH WILL
EVENTUALLY MERGE WITH WARM FRONT LIFTING NWD THROUGH THE LOWER MS
VALLEY. THIS BOUNDARY IS EXPECTED TO SERVE AS THE FOCUS FOR
ISOLATED TO SCATTERED TSTM DEVELOPMENT THIS AFTERNOON.

12Z OBSERVED SOUNDINGS FROM AR EWD ACROSS THE GULF COAST SHOW THAT
AN EML HAS SPREAD EWD ACROSS THE REGION WITH MIDLEVEL LAPSE RATES OF
7.0-7.5 C/KM. WHEN COUPLED WITH A MOISTENING BOUNDARY LAYER AND
DAYTIME HEATING...ENVIRONMENT IS EXPECTED TO BECOME MODERATELY
UNSTABLE WITH MLCAPE VALUES RANGING FROM 1500-2500 J/KG OVER THE MID
SOUTH TO AROUND 1000 J/KG ALONG THE SAVANNAH RIVER. GIVEN THE
MODESTLY STRONG NWLY WIND FIELD OBSERVED THIS MORNING IN THE MID TO
UPPER-TROPOSPHERE...SETUP MAY YIELD A FEW FORWARD-PROPAGATING STORM
CLUSTERS CAPABLE OF DAMAGING WINDS AND SOME HAIL.

..HALES/COHEN.. 05/08/2011

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KJAX [081536]: Preliminary Local Storm Report

NWUS52 KJAX 081536
LSRJAX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
1136 AM EDT SUN MAY 08 2011

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

0730 AM WILDFIRE 13 S STEVEN FOSTER STAT 30.63N 82.34W
05/08/2011 WARE GA PARK/FOREST SRVC

THE HONEY PRAIRIE WILDFIRE GREW TO 44,200 ACRES.

&&

$$

PP

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KPIH [081428]: Preliminary Local Storm Report

NWUS55 KPIH 081428
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
828 AM MDT SUN MAY 08 2011

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

0827 AM HEAVY RAIN POCATELLO 42.88N 112.47W
05/08/2011 M0.64 INCH BANNOCK ID NWS EMPLOYEE

EAST BENCH - PAST 12 HOUR RAINFALL

&&

$$

PANGEL

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KFSD [081359]: Preliminary Local Storm Report

NWUS53 KFSD 081359
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
859 AM CDT SUN MAY 08 2011

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

0858 AM HAIL SINAI 44.25N 97.04W
05/08/2011 E0.88 INCH BROOKINGS SD TRAINED SPOTTER

GROUND IS COMPLETELY WHITE.

&&

$$

BT

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KFSD [081344]: Preliminary Local Storm Report

NWUS53 KFSD 081344
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
844 AM CDT SUN MAY 08 2011

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

0835 AM HAIL 4 W SINAI 44.25N 97.12W
05/08/2011 E0.88 INCH BROOKINGS SD TRAINED SPOTTER

&&

$$

BT

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KFSD [081326]: Preliminary Local Storm Report

NWUS53 KFSD 081326
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
826 AM CDT SUN MAY 08 2011

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

0821 AM HAIL OLDHAM 44.23N 97.31W
05/08/2011 E1.00 INCH KINGSBURY SD TRAINED SPOTTER

&&

$$

BT

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KFSD [081255]: Preliminary Local Storm Report

NWUS53 KFSD 081255
LSRFSD

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
755 AM CDT SUN MAY 08 2011

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

0740 AM HAIL 5 NW CARTHAGE 44.23N 97.78W
05/08/2011 E1.25 INCH KINGSBURY SD TRAINED SPOTTER

A FEW WINDOWS BROKEN OUT

&&

$$

KWEISSER

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 081251
SWODY1
SPC AC 081249

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0749 AM CDT SUN MAY 08 2011

VALID 081300Z - 091200Z

...THERE IS A SLGT RISK OF SVR TSTMS FROM PORTIONS OF THE NRN HIGH
PLAINS SEWD THROUGH THE MID MO VALLEY...

...NRN HIGH PLAINS EWD/SEWD INTO THE UPPER MS AND MID/LOWER MO
VALLEYS...

MORNING WATER VAPOR IMAGERY SHOWS A WEAK VORTICITY MAXIMUM OVER SWRN
NEB WHICH SHOULD CONTINUE NEWD TODAY...GRADUALLY WEAKENING WITH TIME
AS A LONGER WAVELENGTH RIDGE BUILDS OVER THE UPPER MS VALLEY/UPPER
GREAT LAKES REGION. IN IT/S WAKE...THERE IS SOME SUGGESTION BY
MODEL GUIDANCE THAT A WEAK UPSTREAM SYSTEM MAY MOVE OUT OF THE SRN
ROCKIES INTO THE CNTRL PLAINS LATER TODAY. IN THE LOW
LEVELS...ELONGATED LEE CYCLONE WILL BE MAINTAINED FROM ERN WY/WRN SD
SWD INTO ERN CO/WRN KS. ASSOCIATED DRYLINE WILL BECOME
BETTER-DEFINED BY AFTERNOON...EXTENDING FROM WY/SD LOW THROUGH WRN
NEB INTO CNTRL KS. MEANWHILE...WARM FRONT CURRENTLY LIFTING NWD
THROUGH KS SHOULD CONTINUE TO MOVE/DEVELOP NWD...LIKELY EXTENDING
FROM SURFACE LOW OVER WRN SD SEWD THROUGH CNTRL NEB INTO NERN KS.

LATEST SUITE OF MESOSCALE AND CONVECTION-ALLOWING MODEL GUIDANCE HAS
CAST CONSIDERABLE UNCERTAINTY ON TSTM EVOLUTION THIS AFTERNOON AND
EVENING. THIS IS LIKELY DUE IN PART TO THE TENDENCY FOR LARGE-SCALE
RIDGING OVER THE N-CNTRL CONUS...DOWNSTREAM FROM AMPLIFYING TROUGH
OVER THE WRN STATES. NONETHELESS...THE MAINTENANCE OF A 30-40 KT
SLY LLJ ACROSS THE GREAT PLAINS WILL SUPPORT THE NWD FLUX OF AN
INCREASINGLY MOIST BOUNDARY LAYER WITH AFTERNOON DEWPOINTS RANGING
FROM MID/UPPER 50S OVER S-CNTRL SD TO MID 60S ALONG WARM FRONT IN
CNTRL/ERN NEB. WHEN COUPLED WITH MIDLEVEL LAPSE RATES APPROACHING
DRY ADIABATIC AND STRONG DAYTIME HEATING...EXPECT WARM SECTOR AIR
MASS TO BECOME MODERATELY TO STRONGLY UNSTABLE WITH MLCAPE VALUES
RANGING FROM 1000-1500 J/KG IN WRN SD TO AS HIGH AS 3000-3500 J/KG
ACROSS S-CNTRL/SERN NEB.

GIVEN THE ABSENCE OF A WELL-DEFINED SHORT WAVE TROUGH APPROACHING
THE REGION DURING PEAK HEATING /AND THE TENDENCY FOR LONGWAVE
RIDGING TO OCCUR/...MODEL GUIDANCE HAS TRENDED TOWARD A LOWER
PROBABILITY OF SURFACE-BASED STORM DEVELOPMENT WITHIN THE WARM
SECTOR THIS AFTERNOON INTO EVENING. SHOULD ISOLATED STORM
DEVELOPMENT OCCUR...THE DEGREE OF INSTABILITY AND VERTICALLY VEERING
WIND PROFILES WITH 30-40 KT OF DEEP-LAYER SHEAR WILL PROMOTE
SUPERCELLS CAPABLE OF VERY LARGE HAIL...DAMAGING WINDS AND A FEW
TORNADOES.

MORE PROBABLE STORM FORMATION APPEARS TO BE LATE THIS EVENING INTO
TONIGHT N OF SURFACE WARM FRONT FROM SERN MT EWD ACROSS ND...NRN SD
INTO CNTRL/SRN MN SEWD TOWARD THE MID MS VALLEY. THIS WILL BE IN
RESPONSE TO A BROAD SWATH OF INCREASING WAA/ISENTROPIC ASCENT
OCCURRING AT THE TERMINUS OF AN EXPANSIVE NOCTURNAL LLJ. GIVEN AN
INFLOW AIR MASS CHARACTERIZED BY MUCAPE VALUES OF 2000-3000 J/KG AND
35-45 KT OF EFFECTIVE BULK SHEAR...SETUP WILL FAVOR ORGANIZED
ELEVATED STORMS /INCLUDING SUPERCELLS/ CAPABLE OF SEVERE HAIL.

...SRN PLAINS...

INCREASING SWLY MID-TROPOSPHERIC FLOW IN ADVANCE OF AMPLIFYING WRN
U.S. TROUGH WILL SERVE TO STRENGTHEN EML AND ASSOCIATED CAP ACROSS
THE REGION TODAY. THIS STRENGTHENING CAP WILL BE OFFSET TO SOME
DEGREE BY STRONG DIABATIC WARMING ALONG/W OF THE DRYLINE WHERE
SURFACE TEMPERATURES WILL RISE THROUGH THE 90S TO 100-105 F. AIR
MASS E OF DRYLINE IS EXPECTED TO BECOME MODERATELY TO STRONGLY
UNSTABLE BY AFTERNOON WITH MLCAPE VALUES INCREASING TO 2000-3500
J/KG.

LATEST MODEL GUIDANCE REMAINS RATHER CONSISTENT IN SUGGESTING THAT
THE DRYLINE WILL REMAIN LARGELY INACTIVE THROUGH THIS EVENING. THIS
APPEARS REASONABLE GIVEN THE MID-TROPOSPHERIC WARMING FORECAST AND
THE ABSENCE OF ANY ROBUST FORCING MECHANISMS. AS SUCH...THE
CATEGORICAL SLIGHT RISK HAS BEEN REMOVED FROM THE AREA. SHOULD AN
ISOLATED STORM DEVELOP...THE THERMODYNAMIC ENVIRONMENT WILL BE
SUPPORTIVE OF LARGE HAIL AND LOCALLY DAMAGING WIND GUSTS THROUGH
THIS EVENING.

...TN VALLEY TO SERN ATLANTIC COAST...

BUILDING SURFACE RIDGE FROM THE LOWER GREAT LAKES SWD THROUGH THE
MID ATLANTIC STATES WILL RESULT IN THE SWD PROGRESSION OF A WEAK
BACKDOOR COLD FRONT THROUGH THE SRN APPALACHIANS WHICH WILL
EVENTUALLY MERGE WITH WARM FRONT LIFTING NWD THROUGH THE LOWER MS
VALLEY. THIS BOUNDARY IS EXPECTED TO SERVE AS THE FOCUS FOR
ISOLATED TO SCATTERED TSTM DEVELOPMENT THIS AFTERNOON.

12Z OBSERVED SOUNDINGS FROM AR EWD ACROSS THE GULF COAST SHOW THAT
AN EML HAS SPREAD EWD ACROSS THE REGION WITH MIDLEVEL LAPSE RATES OF
7.0-7.5 C/KM. WHEN COUPLED WITH A MOISTENING BOUNDARY LAYER AND
DAYTIME HEATING...ENVIRONMENT IS EXPECTED TO BECOME MODERATELY
UNSTABLE WITH MLCAPE VALUES RANGING FROM 1500-2500 J/KG OVER THE MID
SOUTH TO AROUND 1000 J/KG ALONG THE SAVANNAH RIVER. GIVEN THE
MODESTLY STRONG NWLY WIND FIELD OBSERVED THIS MORNING IN THE MID TO
UPPER-TROPOSPHERE...SETUP MAY YIELD A FEW FORWARD-PROPAGATING STORM
CLUSTERS CAPABLE OF DAMAGING WINDS AND SOME HAIL.

..MEAD/GRAMS.. 05/08/2011

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KIND [081014]: Preliminary Local Storm Report...summary

NWUS53 KIND 081014
LSRIND

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
613 AM EDT SUN MAY 08 2011

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

0718 PM HAIL CAYUGA 39.95N 87.46W
05/07/2011 M1.00 INCH VERMILLION IN PUBLIC

AT FALCON MART NEAR HIGHWAYS 234 AND 63.

0744 PM TSTM WND GST 1 E MONTEZUMA 39.79N 87.35W
05/07/2011 E65.00 MPH PARKE IN EMERGENCY MNGR

ALSO REPORTED ROTATING WALL CLOUD.

0818 PM HAIL SANDFORD 39.55N 87.53W
05/07/2011 M1.00 INCH VIGO IN AMATEUR RADIO

0823 PM HAIL 3 SW UNIVERSAL 39.59N 87.49W
05/07/2011 M1.00 INCH VIGO IN AMATEUR RADIO

PEA TO QUARTER SIZED HAIL COVERED THE GROUND IN
SHIRKIEVILLE.

0835 PM TSTM WND DMG TERRE HAUTE 39.47N 87.38W
05/07/2011 VIGO IN BROADCAST MEDIA

HOLE IN THE ROOF OF THE COMMUNITY THEATER IN TERRE HAUTE.
TIME ESTIMATED FROM RADAR.

0835 PM HAIL TERRE HAUTE 39.47N 87.38W
05/07/2011 M1.00 INCH VIGO IN AMATEUR RADIO

SOUTHERN TERRE HAUTE.

0839 PM HAIL TERRE HAUTE 39.47N 87.38W
05/07/2011 M1.25 INCH VIGO IN AMATEUR RADIO

0845 PM HAIL 3 SSE TERRE HAUTE 39.43N 87.36W
05/07/2011 M1.50 INCH VIGO IN AMATEUR RADIO

AT EATON DR. AND MCDANIEL RD.

0934 PM FLASH FLOOD 2 SSW PIMENTO 39.28N 87.40W
05/07/2011 VIGO IN AMATEUR RADIO

THE INTERSECTION OF US 41 AND STATE ROAD 246 IN LINTON
HAS NINE INCHES OF WATER OVER THE ROAD.

0935 PM FLASH FLOOD TERRE HAUTE 39.47N 87.38W
05/07/2011 VIGO IN AMATEUR RADIO

FLASH FLOODING IN CENTRAL TERRE HAUTE...THE INTERSECTION
OF THIRD ST AND POPLAR ST IS FLOODED.

0956 PM HAIL BLOOMFIELD 39.03N 86.94W
05/07/2011 M0.25 INCH GREENE IN EMERGENCY MNGR

&&

$$

JH

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 080831
SWOD48
SPC AC 080830

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0330 AM CDT SUN MAY 08 2011

VALID 111200Z - 161200Z

...DISCUSSION...
SRN PORTIONS OF THE WRN STATES UPPER TROUGH WILL BE IN THE PROCESS
OF EJECTING ENE FROM THE SRN ROCKIES INTO THE CNTRL/SRN PLAINS BY
TUESDAY NIGHT AND WEDNESDAY /DAY 4/. 00Z ECMWF SOLUTION IS
PREFERRED IN MAINTAINING STRONGER HEIGHT FALLS/JET AS IT MOVES INTO
KS/OK/W TX WITH TRIPLE POINT LIKELY EVOLVING OVER SW KS WEDNESDAY
AFTN. MAGNITUDE OF FORCING...COOLING MID-LEVEL TEMPS AND 50-60 KTS
OF SWLY MID-LEVEL FLOW ASSOCIATED WITH THE TROUGH SHOULD LEAD TO
ORGANIZED SEVERE STORMS FROM KS/NEB BORDER SWD INTO NRN TX. THESE
STORMS WILL THEN TRANSLATE ENE TOWARD SE NEB...ERN PARTS OF KS/OK
AND NCNTRL TX WEDNESDAY NIGHT. AT THIS POINT...DAY 4 APPEARS TO BE
SETTING UP FOR AN ACTIVE SEVERE EVENT WITH ALL FACETS OF SEVERE
WEATHER POSSIBLE.

BEYOND WEDNESDAY...MODEL SPREAD INCREASES FURTHER WITH EVOLUTION OF
A POSSIBLE CUT-OFF LOW OVER THE MIDWEST/GREAT LAKES REGION. EXACT
EVOLUTION OF THIS SCENARIO IS NOT CLEAR AND PRECLUDES MENTION OF
SEVERE WEATHER AREAS THROUGH THE REMAINDER OF THE WEEK.

..RACY.. 05/08/2011

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KPIH [080733]: Preliminary Local Storm Report

NWUS55 KPIH 080733
LSRPIH

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
133 AM MDT SUN MAY 08 2011

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

0110 AM FLOOD 8 WSW VICTOR 43.56N 111.26W
05/08/2011 BONNEVILLE ID DEPT OF HIGHWAYS

HIGHWAY 31 CLOSE DUE TO MUD SLIDE WITH DAMAGE TO BRIDGE.

&&

$$

DPHELPS

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 080713
SWODY3
SPC AC 080712

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0212 AM CDT SUN MAY 08 2011

VALID 101200Z - 111200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS PORTIONS OF ERN ND AND
CNTRL/NRN MN...

...SYNOPSIS...
WRN STATES UPPER TROUGH WILL BEGIN TO MIGRATE ENE ACROSS THE PLAINS
ON TUESDAY AS A NEW IMPULSE DIGS SEWD FROM THE GULF OF AK. THE
TROUGH WILL BE COMPOSED OF TWO PRIMARY SHORTWAVE TROUGHS. ONE
DISTURBANCE WILL CONTINUE ENE FROM THE NRN PLAINS TOWARD NWRN
ONTARIO LATE ON TUESDAY WHILE A SECOND JETLET BEGINS TO TRANSLATE
ACROSS THE SRN ROCKIES TO THE CNTRL/SRN HIGH PLAINS BY LATE IN THE
PERIOD.

...ERN ND/CNTRL-NRN MN...
LOWER THAN AVERAGE CONFIDENCE EXISTS AS MODELS HAVE NOT BEEN
CONSISTENT ON THE HANDLING OF THE NRN PORTIONS OF THE EJECTING WRN
STATES UPPER TROUGH. CURRENT THINKING IS THAT A SFC LOW ATTENDANT
TO THE LEAD MID-LEVEL IMPULSE WILL TRAVEL ACROSS CNTRL ND TOWARD
NWRN MN BY TUESDAY EVE. SMALL WARM SECTOR...CHARACTERIZED BY 1500+
J/KG MLCAPE...WILL PROBABLY EVOLVE ALONG/E OF A SURGING
DRYLINE/FRONT FROM THE UPR MS VLY WNW TO ERN ND BY AFTN. EXPECT
INITIAL STORMS MAY INITIATE AMID WEAKER CINH/STRONGER ASCENT NEAR
THE TRIPLE POINT ERN ND BY MID-AFTN...THEN EVOLVE ESE ALONG THE
DRYLINE/FRONT INTO CNTRL MN BY LATE AFTN. POTENTIALLY 50 KTS OF
EFFECTIVE SHEAR AND 6.5+ DEG C PER KM H5-H7 LAPSE RATES WILL BE
FAVORABLE FOR MIXED CONVECTIVE MODES GIVING LARGE HAIL...DMGG WINDS
AND A COUPLE OF TORNADOES.

...PLAINS...
EML WILL REMAIN STRONG ACROSS THE PLAINS ON TUESDAY WITH PRIMARY
MASS CONVERGENCE LIKELY RELEGATED TO THE EJECTING NRN PLAINS WAVE.
IN FACT...PREFERRED SLOWER TIMING OF THE SECONDARY IMPULSE MOVING
ACROSS THE SRN ROCKIES ON TUESDAY/TUESDAY NIGHT SUGGESTS THAT WEAK
LARGE-SCALE RIDGING MAY DOMINATE DOWNSTREAM AND LIMIT PROBABILITIES
OF TSTMS ALTOGETHER ACROSS THE PLAINS THROUGH MOST OF TUESDAY.
GIVEN A SLOWER TIMING OF THIS WAVE...EXPECT THAT MOST STORM CHANCES
WILL EXIST TUESDAY NIGHT...BOTH ALONG THE A WEAK WIND SHIFT SETTLING
SWD INTO NRN KS/SERN NEB AND ALONG WRN PERIPHERY OF LOW-LEVEL MOIST
AXIS FROM TX BIG BEND NWD INTO WRN OK. LOW-END SVR PROBABILITIES
WILL EXIST IN THESE REGIONS SINCE EVEN NOCTURNAL STORMS MAY OFFER A
LARGE HAIL THREAT. LARGE DEGREE OF UNCERTAINTY PRECLUDES HIGHER
PROBABILITIES AT THIS TIME.

...SERN STATES...
AS LARGE SCALE RIDGE AMPLIFIES DOWNSTREAM OF THE WRN STATES
TROUGH...HEIGHT GRADIENT WILL TIGHTEN AND CONTRIBUTE TO A
CONCOMITANT ENHANCEMENT OF THE NWLY LOW/MID-LEVEL FLOW REGIME.
DIURNALLY-BASED STORMS...POSSIBLY AIDED BY WEAK MID-LEVEL WAVES
CRESTING THE RIDGE...WILL LIKELY FORM VCNTY A BACKDOOR FRONT
EXPECTED TO LAY FROM SC NWWD INTO THE CNTRL APPALACHIANS. WEAK WNW
LLJ BRANCH FEEDING THE STORMS WILL BE EMANATING FROM A VERY STEEP
LAPSE RATE UPSTREAM ENVIRONMENT AND GIVEN ANTICIPATED KINEMATIC
SET-UP...AT LEAST ISOLD ORGANIZED STORMS WITH LARGE HAIL/GUSTY WINDS
WILL BE POSSIBLE.

..RACY.. 05/08/2011

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 080547
SWODY2
SPC AC 080546

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1246 AM CDT SUN MAY 08 2011

VALID 091200Z - 101200Z

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

...THERE IS A SLGT RISK OF SVR TSTMS OVER A SMALL PORTION OF THE
MIDWEST...

...SYNOPSIS...
A BLOCKY UPPER AIR REGIME WILL BE THE RULE ON MONDAY WITH STRONG
TROUGHS OVER THE WRN ATLANTIC BASIN AND ACROSS THE WRN STATES.
LATTER FEATURE WILL SEND A FORMIDABLE IMPULSE NEWD ACROSS THE CNTRL
ROCKIES TO THE NRN HIGH PLAINS BY MONDAY NIGHT AS ADDITIONAL JET
ENERGY DIGS INTO THE DESERT SW. AT THE SFC...FRONT ASSOCIATED WITH
THE WRN ATLANTIC SYSTEM WILL SETTLE SWD ACROSS THE SERN STATES
THROUGH MONDAY. TAIL-END OF SAME FRONT WILL REDEVELOP NWD THROUGH
THE MIDWEST...UPPER MS VLY AND THE MO RIVER VALLEY. A DRY LINE/LEE
TROUGH WILL MIX EWD THROUGH THE HIGH PLAINS.

...NRN PLAINS...
LOW-LEVEL MOISTURE WILL CONTINUE TO SURGE CYCLONICALLY ABOUT A LEE
LOW POSITIONED OVER SWRN SD OR NEB PANHANDLE THROUGH MONDAY. THE
MOISTURE TRANSPORT WILL YIELD EARLY DAY CLOUDS/CONVECTION THAT WILL
PLAY A CRITICAL ROLE IN PLACEMENT OF THE WARM FRONT FOR MONDAY
AFTN...WHICH AT THIS EARLY JUNCTURE...IS EXPECTED ACROSS CNTRL/SRN
SD. LWR-MID 60S SFC DEW POINTS BENEATH 8.5-9 DEG C PER KM H5-H7
LAPSE RATES WILL YIELD A VERY UNSTABLE ENVIRONMENT... ALBEIT WITH A
STRONG CAP. BUT...AS THE AFOREMENTIONED LEAD WAVE EJECTS ACROSS THE
HIGH PLAINS...COMBINATION OF MOIST-UPSLOPE FLOW AND LARGER-SCALE
SUPPORT SHOULD FOSTER HIGH-BASED STORMS /POSSIBLY SUPERCELLS/ OVER
THE HIGHER TERRAIN OF SWRN SD/ERN WY BY MID-AFTN WITH THREATS FOR
LARGE HAIL. ADDITIONAL AND MORE ROBUST SUPERCELL STORMS WILL
PROBABLY DEVELOP ALONG THE WARM FRONT ESE INTO CNTRL/SRN SD AMID
STRONGER INSTABILITY IF THE CAP CAN BE BREACHED. VERY LARGE HAIL
AND A FEW TORNADOES WILL BE POSSIBLE IF STORMS CAN MATERIALIZE.
ACTIVITY WILL DEVELOP ENE ACROSS NRN SD AND INTO ND/WRN MN OVERNIGHT
WITH A CONTINUED THREAT FOR LARGE HAIL.

...MIDWEST...
HIGH-MODEL SPREAD WILL CONTRIBUTE TO LOWER THAN AVERAGE CONFIDENCE
FOR MONDAY. CONTINUITY FROM DAY 1 SUGGESTS THAT ONE OR MORE
CLUSTERS OF NOCTURNAL TSTMS /SOME WITH HAIL/ MAY EXIST ACROSS THE IA
AREA AT 12Z MONDAY. VEERING SWLY LLJ...TIED TO A WAVE THAT WILL
MINOR OUT AS IT TRAVELS FROM THE PLAINS TOWARD THE MIDWEST...WILL
PROBABLY MAINTAIN AT LEAST ELEVATED STORMS ENE TOWARD THE CNTRL
GREAT LAKES REGION DURING THE DAY. CONCERN IS THAT SFC-BASED STORMS
MAY TRY TO BECOME ESTABLISHED OVER PARTS OF ERN IA AND CNTRL IL
BEFORE RIDGING AND WARMING MID-LEVEL TEMPERATURES TAKE HOLD. VERY
STEEP MID-LVL LAPSE RATES AND FAVORABLE EFFECTIVE SHEAR WOULD BE
FAVORABLE FOR SUPERCELLS WITH LARGE HAIL...DMGG WIND GUSTS AND
POSSIBLY TORNADOES. OTHERWISE...ELEVATED STORMS WILL SPREAD TOWARD
THE OH VLY DURING THE EVENING...BEING FED FROM THE WEST WHERE
MID-TROP LAPSE RATES WILL BE QUITE STEEP /ISOLD LARGE HAIL/.

...SERN STATES...
COLD FRONT AND SEABREEZES WILL BE FOCI FOR ANOTHER ROUND OF
DIURNALLY-ENHANCED TSTMS MONDAY AFTN...PARTICULARLY OVER PARTS OF SC
SWD INTO NRN FL. DEEP NWLY UNIDIRECTIONAL WIND REGIME CONSISTING OF
35-40 KTS OF H5 FLOW AND PRESENCE OF 1000-1500 J/KG MLCAPE WILL BE
CAPABLE OF ORGANIZED MULTICELL STORMS. AT LEAST ISOLD LARGE HAIL
AND GUSTY WINDS CAN BE EXPECTED.

..RACY.. 05/08/2011

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 080542
SWODY1
SPC AC 080541

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1241 AM CDT SUN MAY 08 2011

VALID 081200Z - 091200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE CNTRL PLAINS/MID MS
VALLEY...

...THERE IS A SLGT RISK OF SVR TSTMS FROM SWRN OK INTO SWRN TX...

...CNTRL PLAINS TO MID MS VALLEY...

UPPER RIDGE IS EXPECTED TO GRADUALLY BE SHUNTED EAST INTO THE MS
VALLEY BY LATE AFTERNOON AS HEIGHTS BEGIN TO FALL ACROSS MUCH OF THE
NWRN U.S. INTO THE GREAT BASIN. AHEAD OF THE MAIN UPPER TROUGH IT
APPEARS SEVERAL WEAK BUT POTENTIALLY NOTABLE DISTURBANCES WILL EJECT
ACROSS THE CNTRL ROCKIES INTO THE NRN/CNTRL PLAINS REGION. ONE OF
THESE FEATURES IS EXPECTED TO TRANSLATE TO A POSITION FROM NEAR THE
BLACK HILLS REGION...SEWD INTO SERN NEB BY LATE AFTERNOON. IN
TURN...STRENGTHENING LOW LEVEL WARM ADVECTION WILL SHARPEN A WARM
FRONT WHILE FORCING HIGHER PWAT BOUNDARY LAYER AIRMASS NWD ACROSS
THE PLAINS. LATEST MODEL GUIDANCE STRONGLY SUGGEST 60F+ SFC DEW
POINTS WILL RETURN TO MUCH OF NEB PRIOR TO AFTERNOON INITIATION. IN
FACT IT/S ENTIRELY POSSIBLE THAT MID 60S DEW POINTS ARE FORCED INTO
THIS REGION ALONG ERN PLUME OF VERY STEEP LAPSE RATES WHERE
INITIATION IS EXPECTED. FORECAST SOUNDINGS THUS DISPLAY A VERY
UNSTABLE ENVIRONMENT WITH MUCAPE VALUES ON THE ORDER OF 3000-4000
J/KG. ALTHOUGH ELEVATED CONVECTION MAY BE ONGOING AT THE BEGINNING
OF THE PERIOD ACROSS PARTS OF SD/NRN NEB THE PRIMARY SEVERE THREAT
WILL OCCUR DURING THE LATTER HALF OF THE PERIOD WHEN SUPERCELLS
SHOULD EMERGE AHEAD OF OR IN CONJUNCTION WITH TRANSITORY SHORTWAVE.
VERY LARGE HAIL COULD ACCOMPANY THIS ACTIVITY AS UPDRAFTS SHOULD
PROVE EXCEPTIONALLY ROBUST GIVEN THE STEEP LAPSE RATES AND COOL MID
LEVEL TEMPERATURES. IN ADDITION...ALTHOUGH HIGH LEVEL FLOW IS NOT
EXPECTED TO BE PARTICULARLY STRONG...SUFFICIENT VENTING WILL OCCUR
WHERE MODEST DEEP LAYER SHEAR WOULD SEEM MORE THAN ADEQUATE FOR A
THREAT OF TORNADOES...ESPECIALLY NEAR THE RETREATING WARM FRONT.
NUMEROUS THUNDERSTORM CLUSTERS SHOULD EMERGE BY MID EVENING AS LLJ
INCREASES INTO SERN NEB THUS A LARGER MCS IS POSSIBLE AS THIS
ACTIVITY SPREADS INTO IA WELL AFTER DARK.

...SRN PLAINS...

CONDITIONAL RISK OF SEVERE STORMS IS FORECAST ALONG THE DRYLINE
SUNDAY...PRIMARILY FROM SWRN OK INTO SWRN TX. LATEST NAM/GFS
GUIDANCE HAS GRADUALLY EASED AWAY FROM CONVECTIVE DEVELOPMENT ALONG
THIS ZONE THE LAST SEVERAL MODEL RUNS. EARLY EVENING SATELLITE
IMAGERY DOES SUGGEST A FEW MINOR IMPULSES EMBEDDED WITHIN THE FLOW
ACROSS THE SWRN U.S. WHICH SHOULD APPROACH THE DRYLINE BEFORE THEY
WEAKEN. THIS NEUTRAL-WEAK LARGE SCALE SUPPORT MAY ALLOW ISOLATED
THUNDERSTORMS TO DEVELOP AS TEMPERATURES SOAR INTO THE 90S TO NEAR
100F. ANY STORMS THAT EMERGE ACROSS THIS REGION COULD CERTAINLY
PRODUCE LARGE HAIL BEFORE WEAKENING BY 03Z.

...TN VALLEY TO CAROLINAS...

DEEP NWLY FLOW WILL CONTINUE ACROSS THE TN VALLEY INTO THE CAROLINAS
TODAY WHICH WILL PROVE SUPPORTIVE OF UPDRAFT ORGANIZATION WHERE
THUNDERSTORMS DEVELOP. AIRMASS IS NOT PARTICULARLY MOIST EAST OF
THE SRN APPALACHIANS BUT A PLUME OF PWAT GREATER THAN ONE INCH
RESIDES UPSTREAM ACROSS THE TN/LOWER OH VALLEY WHICH WILL ADVECT
SEWD WITH TIME. IT APPEARS A LOW LEVEL CONFLUENCE ZONE WILL STRETCH
FROM THE NC/SC BORDER...NWWD INTO TN DURING THE AFTERNOON HOURS.
THIS ZONE WILL LIKELY BE THE PRIMARY FOCUS FOR TSTMS CAPABLE OF
GENERATING GUSTY WINDS AND HAIL. AT THIS TIME IT/S NOT ENTIRELY
CLEAR HOW MUCH CONVECTION WILL EVOLVE ALONG THIS AXIS SO WILL
MAINTAIN 5% SEVERE PROBS ACROSS THIS REGION.

..DARROW/STOPPKOTTE.. 05/08/2011

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KILX [080453]: Preliminary Local Storm Report...summary

NWUS53 KILX 080453
LSRILX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
1153 PM CDT SAT MAY 07 2011

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

0513 PM HAIL 3 NW DANVILLE 40.17N 87.66W
05/07/2011 M0.88 INCH VERMILION IL EMERGENCY MNGR

0532 PM HAIL SIDNEY 40.02N 88.07W
05/07/2011 M1.00 INCH CHAMPAIGN IL TRAINED SPOTTER

0538 PM HAIL SIDNEY 40.02N 88.07W
05/07/2011 M1.50 INCH CHAMPAIGN IL TRAINED SPOTTER

0542 PM HAIL DANVILLE 40.14N 87.62W
05/07/2011 M0.75 INCH VERMILION IL EMERGENCY MNGR

PEA TO DIME SIZED HAIL

0543 PM HAIL 3 S ST. JOSEPH 40.07N 88.04W
05/07/2011 M1.00 INCH CHAMPAIGN IL AMATEUR RADIO

0547 PM HAIL HOMER 40.03N 87.96W
05/07/2011 M0.75 INCH CHAMPAIGN IL EMERGENCY MNGR

DIME SIZED HAIL

0553 PM FLASH FLOOD DANVILLE 40.14N 87.62W
05/07/2011 VERMILION IL LAW ENFORCEMENT

MANY STREETS IMPASSABLE DUE TO HEAVY RAIN

0554 PM FUNNEL CLOUD 4 N BROADLANDS 39.97N 88.00W
05/07/2011 CHAMPAIGN IL TRAINED SPOTTER

TWO FUNNEL CLOUDS SEEN

0558 PM FUNNEL CLOUD NE ALLERTON 39.92N 87.94W
05/07/2011 VERMILION IL EMERGENCY MNGR

FUNNEL CLOUD NEARLY REACHING GROUND

0602 PM HEAVY RAIN DANVILLE 40.14N 87.62W
05/07/2011 M1.30 INCH VERMILION IL EMERGENCY MNGR

1.30 INCHES IN 30 TO 45 MINUTES.

0608 PM FUNNEL CLOUD BROADLANDS 39.91N 88.00W
05/07/2011 CHAMPAIGN IL PUBLIC

FUNNEL APPROACHING GROUND

0608 PM TORNADO 2 SE ALLERTON 39.89N 87.91W
05/07/2011 VERMILION IL AMATEUR RADIO

SEVERAL WEAK TORNADOES

0645 PM HAIL 2 W CHRISMAN 39.80N 87.71W
05/07/2011 M1.00 INCH EDGAR IL EMERGENCY MNGR

0716 PM HAIL 6 E PARIS 39.62N 87.58W
05/07/2011 M1.00 INCH EDGAR IL AMATEUR RADIO

0718 PM FUNNEL CLOUD 2 SE VERMILION 39.56N 87.56W
05/07/2011 EDGAR IL TRAINED SPOTTER

FUNNEL CLOUD AT THE EDGAR COUNTY LINE AND INDIANA STATE
LINE NEAR THE NEW GOSHEN FIRE HOUSE.

&&

$$

SHIMON

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