KILN [260357]: Preliminary Local Storm Report

NWUS51 KILN 260357
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1157 PM EDT WED APR 25 2012

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

1140 PM HAIL COVINGTON 39.04N 84.51W
04/25/2012 E1.00 INCH KENTON KY PUBLIC


&&

$$

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KLSX [260351]: Preliminary Local Storm Report

NWUS53 KLSX 260351
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1050 PM CDT WED APR 25 2012

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

1045 PM HAIL WHITE HALL 39.44N 90.40W
04/25/2012 E0.50 INCH GREENE IL TRAINED SPOTTER

SPOTTER ALSO REPORTED GUSTY WINDS OF 30 TO 40 MPH


&&

$$

PRZYBYLINSKI

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KILN [260349]: Preliminary Local Storm Report

NWUS51 KILN 260349
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1149 PM EDT WED APR 25 2012

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

1136 PM HAIL 5 NNW BROMLEY 39.15N 84.61W
04/25/2012 E1.25 INCH HAMILTON OH PUBLIC


&&

$$

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KILN [260338]: Preliminary Local Storm Report

NWUS51 KILN 260338
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1138 PM EDT WED APR 25 2012

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

1121 PM HAIL 5 NW HEBRON 39.12N 84.77W
04/25/2012 E1.00 INCH BOONE KY PUBLIC


&&

$$

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KILN [260331]: Preliminary Local Storm Report

NWUS51 KILN 260331
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1131 PM EDT WED APR 25 2012

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

1105 PM HAIL WEST HARRISON 39.26N 84.83W
04/25/2012 E1.00 INCH DEARBORN IN PUBLIC


&&

$$

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KILN [260328]: Preliminary Local Storm Report

NWUS51 KILN 260328
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1128 PM EDT WED APR 25 2012

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

1109 PM HAIL WEST HARRISON 39.26N 84.83W
04/25/2012 E0.88 INCH DEARBORN IN PUBLIC

1109 PM HAIL LAWRENCEBURG 39.10N 84.87W
04/25/2012 E0.75 INCH DEARBORN IN PUBLIC

TIME IS ESTIMATED


&&

$$

JOHNF

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KLSX [260328]: Preliminary Local Storm Report

NWUS53 KLSX 260328
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1028 PM CDT WED APR 25 2012

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

1025 PM HAIL PITTSFIELD 39.61N 90.81W
04/25/2012 E1.00 INCH PIKE IL TRAINED SPOTTER


&&

$$

GKS

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KLSX [260327]: Preliminary Local Storm Report

NWUS53 KLSX 260327
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1027 PM CDT WED APR 25 2012

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

1026 PM HAIL 3 E PITTSFIELD 39.61N 90.75W
04/25/2012 M1.00 INCH PIKE IL TRAINED SPOTTER


&&

$$

BRITT

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KLSX [260321]: Preliminary Local Storm Report

NWUS53 KLSX 260321
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1021 PM CDT WED APR 25 2012

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

1020 PM HAIL PITTSFIELD 39.61N 90.81W
04/25/2012 E0.88 INCH PIKE IL TRAINED SPOTTER


&&

$$

CARNEY

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KILN [260319]: Preliminary Local Storm Report

NWUS51 KILN 260319
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1118 PM EDT WED APR 25 2012

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

1114 PM HAIL 1 S HARRISON 39.24N 84.79W
04/25/2012 M0.50 INCH HAMILTON OH TRAINED SPOTTER

1108 PM HAIL LOGAN 39.25N 84.89W
04/25/2012 M0.75 INCH DEARBORN IN PUBLIC

RELAYED BY MEDIA

1105 PM HAIL HARRISON 39.25N 84.79W
04/25/2012 U0.75 INCH HAMILTON OH PUBLIC

1107 PM HAIL LAWRENCEBURG 39.10N 84.87W
04/25/2012 U0.50 INCH DEARBORN IN PUBLIC


&&

$$

JOHNF

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MESO: Mesoscale Discussion 0586

ACUS11 KWNS 260312
SWOMCD
SPC MCD 260311
WVZ000-KYZ000-OHZ000-VAZ000-INZ000-ILZ000-MOZ000-260515-

MESOSCALE DISCUSSION 0586
NWS STORM PREDICTION CENTER NORMAN OK
1011 PM CDT WED APR 25 2012

AREAS AFFECTED...ERN MO INTO CNTRL IL

CONCERNING...SEVERE THUNDERSTORM WATCH 187...

VALID 260311Z - 260515Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 187
CONTINUES.

AN ISOLATED HAIL THREAT WILL REMAIN FOR SEVERAL HOURS ACROSS A LARGE
AREA FROM NERN MO/CNTRL IL EWD ACROSS THE OH VALLEY.

ISOLATED HAIL STORMS PERSIST OVER WRN IL...JUST AHEAD OF A COLD AND
NEAR THE SURFACE LOW. WEAK CONVERGENCE WILL REMAIN FROM SRN IL INTO
IND THIS EVENING AS THE LOW PROGRESSES EWD. THE ONGOING ACTIVITY MAY
CYCLE UP AND DOWN AS IT TRAVELS SEWD ACROSS IL...PRODUCING HAIL.
WHILE SOME CIN EXISTS...IT IS NOT FORECAST TO TOTALLY CAP THE
AREA...AND PARAMETERS REMAIN VERY FAVORABLE FOR LARGE HAIL.

FARTHER E...INTO SRN OH AND ERN KY...A SEVERE STORM HAS FORMED ON
THE WRN FRINGE OF A BAND OF WARM ADVECTION CONVECTION...HAVING
ACCESS TO BETTER LAPSE RATES/MOISTURE. OTHER ACTIVITY WAS DEVELOPING
ON THE NOSE OF A 50+ KT WLY LOW LEVEL JET OVER KY. THIS BROAD AREA
OF LIFT SHOULD PERSIST...BUT SHOULD GRADUALLY OUTRUN THE BEST
INSTABILITY. AS A RESULT...THE BEST THREAT OF HAIL IS EXPECTED TO BE
OVER THE NEXT FEW HOURS...WANING AFTER 06Z INTO THE WRN VIRGINIAS.

..JEWELL.. 04/26/2012

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

ATTN...WFO...RLX...JKL...ILN...LMK...IND...PAH...ILX...LSX...
DVN...

LAT...LON 38389012 39139132 39719159 40199140 40349080 40118976
39808805 39738578 39608394 39298313 38328204 37708210
37248242 37128358 37478786 37868923 38389012

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KLSX [260303]: Preliminary Local Storm Report

NWUS53 KLSX 260303
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1003 PM CDT WED APR 25 2012

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

0955 PM HAIL BEVERLY 39.79N 90.99W
04/25/2012 M1.00 INCH ADAMS IL TRAINED SPOTTER

0.5 TO 1 INCH HAIL


&&

$$

CARNEY

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KLSX [260302]: Preliminary Local Storm Report

NWUS53 KLSX 260302
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
1001 PM CDT WED APR 25 2012

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

0957 PM HAIL 10 E LIBERTY 39.88N 90.92W
04/25/2012 M0.70 INCH ADAMS IL TRAINED SPOTTER


&&

$$

BRITT

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KILN [260254]: Preliminary Local Storm Report

NWUS51 KILN 260254
LSRILN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1054 PM EDT WED APR 25 2012

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

1031 PM HAIL METAMORA 39.45N 85.13W
04/25/2012 U1.00 INCH FRANKLIN IN PUBLIC

LOCATION AND TIME ESTIMATED

1032 PM HAIL 6 NNE OLDENBURG 39.41N 85.15W
04/25/2012 M0.75 INCH FRANKLIN IN TRAINED SPOTTER

BRIEF BURST

1035 PM HAIL BROOKVILLE 39.41N 85.05W
04/25/2012 U1.25 INCH FRANKLIN IN PUBLIC

LOCATION ESTIMATED


&&

$$

JOHNF

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KLSX [260253]: Preliminary Local Storm Report

NWUS53 KLSX 260253
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
953 PM CDT WED APR 25 2012

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

0950 PM HAIL 6 SE LIBERTY 39.82N 91.03W
04/25/2012 M1.00 INCH ADAMS IL TRAINED SPOTTER

0.75 TO 1 INCH HAIL


&&

$$

CARNEY

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KLSX [260251]: Preliminary Local Storm Report

NWUS53 KLSX 260251
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
951 PM CDT WED APR 25 2012

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

0946 PM HAIL 1 E RICHFIELD 39.82N 91.10W
04/25/2012 M1.00 INCH ADAMS IL TRAINED SPOTTER


&&

$$

BRITT

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KLSX [260243]: Preliminary Local Storm Report

NWUS53 KLSX 260243
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
943 PM CDT WED APR 25 2012

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

0935 PM HAIL LIBERTY 39.88N 91.11W
04/25/2012 M1.00 INCH ADAMS IL TRAINED SPOTTER

HAIL RANGED FROM DIMES TO QUARTERS


&&

$$

CARNEY

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KLSX [260242]: Preliminary Local Storm Report

NWUS53 KLSX 260242
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
942 PM CDT WED APR 25 2012

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

0935 PM HAIL LIBERTY 39.88N 91.11W
04/25/2012 M0.88 INCH ADAMS IL TRAINED SPOTTER


&&

$$

CARNEY

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KDVN [260239]: Preliminary Local Storm Report

NWUS53 KDVN 260239
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
939 PM CDT WED APR 25 2012

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

0933 PM HAIL 1 SE KEOKUK 40.40N 91.39W
04/25/2012 E0.75 INCH LEE IA TRAINED SPOTTER

0933 PM HAIL HAMILTON 40.39N 91.36W
04/25/2012 E0.25 INCH HANCOCK IL TRAINED SPOTTER


&&

$$

GROSS

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KLSX [260238]: Preliminary Local Storm Report

NWUS53 KLSX 260238
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
938 PM CDT WED APR 25 2012

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

0938 PM HAIL 13 SE QUINCY 39.80N 91.22W
04/25/2012 E1.75 INCH ADAMS IL TRAINED SPOTTER


&&

$$

DYE

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KLSX [260233]: Preliminary Local Storm Report

NWUS53 KLSX 260233
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
933 PM CDT WED APR 25 2012

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

0931 PM HAIL NEW LONDON 39.58N 91.40W
04/25/2012 E1.00 INCH RALLS MO TRAINED SPOTTER


&&

$$

DYE

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KLSX [260216]: Preliminary Local Storm Report

NWUS53 KLSX 260216
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
916 PM CDT WED APR 25 2012

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

0911 PM HAIL 2 NW CAMP POINT 40.05N 91.09W
04/25/2012 E0.70 INCH ADAMS IL TRAINED SPOTTER


&&

$$

DYE

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KDVN [260205]: Preliminary Local Storm Report...summary

NWUS53 KDVN 260205
LSRDVN

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
903 PM CDT WED APR 25 2012

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

0647 PM HAIL 1 W SELMA 40.87N 92.17W
04/25/2012 M0.50 INCH VAN BUREN IA TRAINED SPOTTER

RELAYED BY NWS DES MOINES.

0713 PM HAIL 5 NW KEOSAUQUA 40.79N 92.02W
04/25/2012 E0.88 INCH VAN BUREN IA TRAINED SPOTTER

MOSTLY PEA SIZE HAIL FALLING.

0717 PM HAIL LEBANON 40.73N 92.08W
04/25/2012 E1.75 INCH VAN BUREN IA LAW ENFORCEMENT

TIME ESTIMATED FROM RADAR...RELAYED BY VAN BUREN SHERIFF
OFFICE.

0718 PM HAIL 3 WNW KEOSAUQUA 40.75N 92.02W
04/25/2012 M0.88 INCH VAN BUREN IA TRAINED SPOTTER

FELL IN PAST 2 TO 3 MINUTES.

0720 PM HAIL 2 ESE KEOSAUQUA 40.72N 91.92W
04/25/2012 E0.75 INCH VAN BUREN IA TRAINED SPOTTER

LOTS OF DIME SIZED HAIL FALLING.

0730 PM HAIL 3 WSW BONAPARTE 40.68N 91.85W
04/25/2012 M1.00 INCH VAN BUREN IA TRAINED SPOTTER

TIME ESTIMATED FROM RADAR.

0733 PM HAIL 2 NE CANTRIL 40.67N 92.04W
04/25/2012 M1.75 INCH VAN BUREN IA TRAINED SPOTTER

0733 PM HAIL 5 E CANTRIL 40.64N 91.98W
04/25/2012 E1.00 INCH VAN BUREN IA TRAINED SPOTTER

MOSTLY NICKELS FALLING.

0758 PM HAIL 2 ESE KAHOKA 40.42N 91.69W
04/25/2012 E1.00 INCH CLARK MO TRAINED SPOTTER

0806 PM HAIL ENE WAYLAND 40.40N 91.58W
04/25/2012 M1.00 INCH CLARK MO TRAINED SPOTTER

0809 PM HAIL ESE WAYLAND 40.39N 91.58W
04/25/2012 E1.50 INCH CLARK MO TRAINED SPOTTER

0811 PM HAIL KAHOKA 40.42N 91.72W
04/25/2012 E1.75 INCH CLARK MO TRAINED SPOTTER

LOTS OF CAR DAMAGE IN TOWN.

0813 PM HAIL 2 ESE KAHOKA 40.42N 91.69W
04/25/2012 M1.25 INCH CLARK MO TRAINED SPOTTER

DELAYED REPORT.

0815 PM HAIL KAHOKA 40.42N 91.72W
04/25/2012 E1.75 INCH CLARK MO PUBLIC

RELAYED BY NWS ST LOUIS

0816 PM HAIL WNW KAHOKA 40.42N 91.72W
04/25/2012 E1.75 INCH CLARK MO TRAINED SPOTTER

0822 PM HAIL 1 SE KEOKUK 40.40N 91.39W
04/25/2012 E0.25 INCH LEE IA TRAINED SPOTTER

TIME ESTIMATED FROM RADAR.


&&

$$

GROSS

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KLSX [260202]: Preliminary Local Storm Report

NWUS53 KLSX 260202
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
902 PM CDT WED APR 25 2012

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

0900 PM HAIL 4 SE MEYER 40.11N 91.44W
04/25/2012 E1.00 INCH ADAMS IL EMERGENCY MNGR


&&

$$

DYE

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KLSX [260157]: Preliminary Local Storm Report

NWUS53 KLSX 260157
LSRLSX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ST LOUIS MO
857 PM CDT WED APR 25 2012

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

0856 PM HAIL LIMA 40.18N 91.38W
04/25/2012 E0.70 INCH ADAMS IL TRAINED SPOTTER


&&

$$

DYE

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KDVN [260153]: Preliminary Local Storm Report...corrected

NWUS53 KDVN 260153
LSRDVN

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
852 PM CDT WED APR 25 2012

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

0733 PM HAIL 2 NE CANTRIL 40.67N 92.04W
04/25/2012 M1.75 INCH VAN BUREN IA TRAINED SPOTTER


&&

$$

GROSS

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KSGX [260151]: Preliminary Local Storm Report

NWUS56 KSGX 260151
LSRSGX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN DIEGO CA
651 PM PDT WED APR 25 2012

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

0544 PM NON-TSTM WND GST 1 SW CRESTLINE 34.24N 117.31W
04/25/2012 M52.00 MPH SAN BERNARDINO CA MESONET

MEASURED FROM SDCRR MESONET STATION. WIND GUST ASSOCIATED
WITH RAIN SHOWERS MOVING THROUGH.

0611 PM NON-TSTM WND GST 3 S CORONA 33.82N 117.57W
04/25/2012 M58.00 MPH RIVERSIDE CA MESONET

MEASURED FROM CNAC1 RAWS STATION. WIND GUST ASSOCIATED
WITH RAIN SHOWERS MOVING THROUGH.


&&

$$

SHARRISO

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KDVN [260139]: Preliminary Local Storm Report

NWUS53 KDVN 260139
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
838 PM CDT WED APR 25 2012

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

0813 PM HAIL 2 ESE KAHOKA 40.42N 91.69W
04/25/2012 M1.25 INCH CLARK MO TRAINED SPOTTER

DELAYED REPORT.

0822 PM HAIL 1 SE KEOKUK 40.40N 91.39W
04/25/2012 E0.25 INCH LEE IA TRAINED SPOTTER

TIME ESTIMATED FROM RADAR.


&&

$$

GROSS

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KIWX [260125]: Preliminary Local Storm Report

NWUS53 KIWX 260125
LSRIWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
924 PM EDT WED APR 25 2012

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

0915 PM HAIL 3 N GOSHEN 41.63N 85.83W
04/25/2012 M0.25 INCH ELKHART IN TRAINED SPOTTER


&&

$$

NDM

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KDVN [260125]: Preliminary Local Storm Report

NWUS53 KDVN 260125
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
824 PM CDT WED APR 25 2012

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

0809 PM HAIL ESE WAYLAND 40.39N 91.58W
04/25/2012 E1.50 INCH CLARK MO TRAINED SPOTTER

0811 PM HAIL KAHOKA 40.42N 91.72W
04/25/2012 E1.75 INCH CLARK MO TRAINED SPOTTER

LOTS OF CAR DAMAGE IN TOWN.


&&

$$

GROSS

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KIWX [260122]: Preliminary Local Storm Report

NWUS53 KIWX 260122
LSRIWX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
921 PM EDT WED APR 25 2012

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

0918 PM HAIL 3 NNE MIDWAY 41.65N 85.86W
04/25/2012 M0.25 INCH ELKHART IN TRAINED SPOTTER

LASTED 1 MINUTE


&&

$$

JT

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KPDT [260016]: Preliminary Local Storm Report...corrected

NWUS56 KPDT 260016
LSRPDT

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE PENDLETON OR
516 PM PDT WED APR 25 2012

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

0400 PM HEAVY RAIN 3 E WEST VALLEY 46.59N 120.54W
04/25/2012 M0.53 INCH YAKIMA WA TRAINED SPOTTER

OVER A 7 MINUTE PERIOD. CORRECTED FROM 15 MINUTES.


&&

$$

JSOLOMON

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KDVN [260014]: Preliminary Local Storm Report

NWUS53 KDVN 260014
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
714 PM CDT WED APR 25 2012

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

0713 PM HAIL 5 NW KEOSAUQUA 40.79N 92.02W
04/25/2012 E0.88 INCH VAN BUREN IA TRAINED SPOTTER

MOSTLY PEA SIZE HAIL FALLING.


&&

$$

GROSS

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KDVN [260011]: Preliminary Local Storm Report

NWUS53 KDVN 260011
LSRDVN

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
711 PM CDT WED APR 25 2012

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

0647 PM HAIL 1 W SELMA 40.87N 92.17W
04/25/2012 M0.50 INCH VAN BUREN IA TRAINED SPOTTER

RELAYED BY NWS DES MOINES.


&&

$$

GROSS

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KDMX [260010]: Preliminary Local Storm Report

NWUS53 KDMX 260010
LSRDMX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DES MOINES IA
710 PM CDT WED APR 25 2012

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

0635 PM HAIL 5 W ELDON 40.92N 92.32W
04/25/2012 E1.75 INCH WAPELLO IA TRAINED SPOTTER

DELAYED REPORT.


&&

$$

SKOW

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KLOX [252351]: Preliminary Local Storm Report

NWUS56 KLOX 252351
LSRLOX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE OXNARD CA
450 PM PDT WED APR 25 2012

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

0439 PM WATER SPOUT 3 SE LONG BEACH 33.75N 118.12W
04/25/2012 LOS ANGELES CA TRAINED SPOTTER

WATER SPOUT 1/4 MILE OFF SHORE MOVING TOWARD SEAL BEACH
AREA.


&&

$$

BF

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KPDT [252305]: Preliminary Local Storm Report

NWUS56 KPDT 252305
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
405 PM PDT WED APR 25 2012

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

0400 PM HEAVY RAIN 2 NE WEST VALLEY 46.61N 120.58W
04/25/2012 M0.32 INCH YAKIMA WA TRAINED SPOTTER

OVER A 20 MINUTE PERIOD. MINOR STREET FLOODING.

0400 PM HEAVY RAIN 3 E WEST VALLEY 46.59N 120.54W
04/25/2012 M0.53 INCH YAKIMA WA TRAINED SPOTTER

OVER A 15 MINUTE PERIOD.

0400 PM HEAVY RAIN 3 ESE WEST VALLEY 46.58N 120.54W
04/25/2012 M0.50 INCH YAKIMA WA TRAINED SPOTTER

OVER A 5 MINUTE PERIOD.


&&

$$

JSOLOMON

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KILX [252205]: Preliminary Local Storm Report...summary

NWUS53 KILX 252205
LSRILX

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
505 PM CDT WED APR 25 2012

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

0400 PM TSTM WND DMG 1 E NEW HOLLAND 40.18N 89.56W
04/25/2012 LOGAN IL EMERGENCY MNGR

DAMAGE TO A SHED. PIECES BLOWN ACROSS IL ROUTE 10.

0400 PM TSTM WND DMG 1 E NEW HOLLAND 40.18N 89.56W
04/25/2012 LOGAN IL EMERGENCY MNGR

PART OF ROOF TORN OFF OF FS BUILDING.

0420 PM HAIL LINCOLN 40.15N 89.37W
04/25/2012 M0.88 INCH LOGAN IL EMERGENCY MNGR

0420 PM TSTM WND DMG 3 NNW LINCOLN 40.19N 89.39W
04/25/2012 LOGAN IL EMERGENCY MNGR

TREE BLOWN DOWN ACROSS ROUTE 121 AND 2000TH AVENUE.

0420 PM TSTM WND DMG 1 N LINCOLN 40.17N 89.37W
04/25/2012 LOGAN IL EMERGENCY MNGR

TREE DOWN AT HAMILTON AND TREMONT ST.

0444 PM TSTM WND GST 2 N KENNEY 40.13N 89.09W
04/25/2012 E60.00 MPH DE WITT IL TRAINED SPOTTER


&&

$$

TIMTE

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KILX [252151]: Preliminary Local Storm Report

NWUS53 KILX 252151
LSRILX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
451 PM CDT WED APR 25 2012

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

0400 PM TSTM WND DMG 1 E NEW HOLLAND 40.18N 89.56W
04/25/2012 LOGAN IL EMERGENCY MNGR

PART OF ROOF TORN OFF OF FS BUILDING.

0420 PM TSTM WND DMG 3 NNW LINCOLN 40.19N 89.39W
04/25/2012 LOGAN IL EMERGENCY MNGR

TREE BLOWN DOWN ACROSS ROUTE 121 AND 2000TH AVENUE.

0420 PM TSTM WND DMG 1 N LINCOLN 40.17N 89.37W
04/25/2012 LOGAN IL EMERGENCY MNGR

TREE DOWN AT HAMILTON AND TREMONT ST.

0444 PM TSTM WND GST 2 N KENNEY 40.13N 89.09W
04/25/2012 E60.00 MPH DE WITT IL TRAINED SPOTTER


&&

$$

TIMTE

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KIND [252141]: Preliminary Local Storm Report

NWUS53 KIND 252141
LSRIND

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
541 PM EDT WED APR 25 2012

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

0534 PM HAIL 2 S BLOOMINGTON 39.14N 86.52W
04/25/2012 E0.25 INCH MONROE IN PUBLIC


&&

EVENT NUMBER IND1200167

$$

BHH

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MESO: Mesoscale Discussion 0585

ACUS11 KWNS 252136
SWOMCD
SPC MCD 252136
KYZ000-INZ000-ILZ000-MOZ000-252300-

MESOSCALE DISCUSSION 0585
NWS STORM PREDICTION CENTER NORMAN OK
0436 PM CDT WED APR 25 2012

AREAS AFFECTED...CNTRL IL AND SRN IL...SRN IND...WRN KY

CONCERNING...SEVERE POTENTIAL...WATCH LIKELY

VALID 252136Z - 252300Z

STORMS ARE EXPECTED TO INCREASE IN COVERAGE OVER THE NEXT FEW
HOURS...WITH MAINLY A HAIL AND WIND THREAT. A WATCH APPEARS LIKELY.

THE 18Z ILX SOUNDING SHOWED STEEP LAPSE RATES ALOFT...BUT STILL
STABLE FOR SURFACE BASED PARCELS. HOWEVER...WHEN MODIFIED FOR
CURRENT CONDITIONS...TEMPERATURES IN THE LOWER 80S F AND DEWPOINTS
APPROACHING 60 F...CIN IS NEARLY GONE. INDEED...STORMS HAVE BEGUN TO
DEVELOP OVER CNTRL IL...NEAR STATIONARY BOUNDARY AND WHERE LOW LEVEL
WARM ADVECTION PERSISTS. THIS INITIAL ACTIVITY ALREADY APPEARS TO
HAVE A HAIL AND WIND THREAT.

WITH STEEP LAPSE RATES AND 50 KT NW ORIENTED DEEP SHEAR...THIS WILL
FAVOR LONG LIVED STORMS...INCLUDING SUPERCELLS AND/OR BOWS. STORM
MODE COULD REMAIN SUPERCELLULAR IF OUTFLOW PRODUCTION IS KEPT
LOW...BUT SOME SWWD PROPAGATION IS POSSIBLE...AND MERGING OUTFLOWS
WOULD RESULT IN MORE OF A WIND THREAT.

THE MAIN DETRIMENT TO TORNADOES WILL BE THE MARGINAL LOW LEVEL
MOISTURE IN RELATION TO RELATIVELY WARM/DRY AIR FROM 850-700 MB AND
MARGINAL LCL HEIGHTS. A ROGUE TORNADO CANNOT BE RULED OUT AS
ACTIVITY CONTINUES TO EVOLVE. THE AREA FROM SRN IL INTO SWRN
IND...NEAR THE BOUNDARY BE MONITORED CLOSELY FOR ANY TORNADO
POTENTIAL.

..JEWELL.. 04/25/2012

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

ATTN...WFO...LMK...IND...PAH...ILX...LSX...

LAT...LON 40428869 40028747 39048605 37858600 37048679 36768786
36858879 37378952 38039024 38369061 38999082 39789033
40428869

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KILX [252133]: Preliminary Local Storm Report...corrected

NWUS53 KILX 252133
LSRILX

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE LINCOLN IL
433 PM CDT WED APR 25 2012

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

0400 PM TSTM WND DMG 1 E NEW HOLLAND 40.18N 89.56W
04/25/2012 LOGAN IL EMERGENCY MNGR

DAMAGE TO A SHED. PIECES BLOWN ACROSS IL ROUTE 10.


&&

$$

TIMTE

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KILX [252127]: Preliminary Local Storm Report

NWUS53 KILX 252127
LSRILX

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
427 PM CDT WED APR 25 2012

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

0410 PM TSTM WND DMG 1 E NEW HOLLAND 40.18N 89.56W
04/25/2012 LOGAN IL EMERGENCY MNGR

DAMAGE TO A SHED. PIECES BLOWN ACROSS IL ROUTE 10.

0420 PM HAIL LINCOLN 40.15N 89.37W
04/25/2012 M0.88 INCH LOGAN IL EMERGENCY MNGR


&&

$$

TIMTE

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KFGF [252017]: Preliminary Local Storm Report...summary

NWUS53 KFGF 252017
LSRFGF

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
315 PM CDT WED APR 25 2012

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

1223 PM FUNNEL CLOUD DILWORTH 46.88N 96.70W
04/21/2012 CLAY MN LAW ENFORCEMENT

MULITPLE FUNNELS WERE OBSERVED ACROSS CENTRAL CLAY COUNTY
FROM NEAR FELTON TOWARDS ULEN AND DOWN THROUGH DILWORTH
AND GLYNDON AREAS TOWARDS DOWNER. THESE OCCURRED MAINLY
FROM 1223 PM THROUGH 1 PM CDT. MOST WERE SHORT LIVED BUT
ONE OR MORE WERE PERSISTENT FOR SEVERAL MINUTES.

1235 PM TORNADO 5 SE KENT 46.39N 96.61W
04/21/2012 F0 WILKIN MN LAW ENFORCEMENT

THIS TORNADO TOUCHED DOWN NEAR A FARMSTEAD AND THEN
TRACKED INTERMITTENTLY TO THE EAST FOR ABOUT A HALF MILE
AND LIFTED AROUND 1237 PM CDT. THE TORNADO TORE ALL OF
THE TIN ROOFING AND ROOFING PANELS FROM AN OPEN FACED
POLE SHED. IT ALSO TORE DOWN SEVERAL TREE LIMBS IN THE
FARMYARD AND TOSSED A TRAMPOLINE ON TOP OF THE GARAGE.
MAXIMUM WIDTH ESTIMATED TO 40 YARDS AND PEAK WIND TO 80
MPH.

1241 PM TORNADO 5 SE GLYNDON 46.82N 96.50W
04/21/2012 F0 CLAY MN TRAINED SPOTTER

THIS TORNADO TOUCHED DOWN NEAR A FARMSTEAD WEST OF MN HWY
9 AND TRACKED EASTWARD FOR ABOUT ONE QUARTER OF A MILE
BEFORE LIFTING AROUND 1242 PM CDT. A SPOTTER REPORTED
SEVERAL 4 FOOT BY 6 FOOT TIN ROOFING PANELS WERE BLOWN
OFF A POLE SHED AND CARRIED EASTWARD ACROSS MN HWY 9.
MAXIMUM WIDTH ESTIMATED AT 20 YARDS AND PEAK WINDS
ESTIMATED FROM 70 TO 80 MPH.

0124 PM FUNNEL CLOUD 7 N FOXHOME 46.38N 96.31W
04/21/2012 WILKIN MN LAW ENFORCEMENT

MULTIPLE BRIEF FUNNELS WERE OBSERVED MOVING EASTWARD
ACROSS WILKIN COUNTY. ONE OF THESE PRODUCED A VERY BRIEF
AND NONDAMAGING GROUND CONTACT NEAR THE INTERSECTION OF
CR16 AND CR19.

0205 PM HAIL 3 N FERGUS FALLS 46.33N 96.07W
04/21/2012 E0.75 INCH OTTER TAIL MN TRAINED SPOTTER

PEA TO DIME SIZE HAIL ABOUT 1 INCH DEEP ON HIGHWAY.

0211 PM TORNADO 7 S FERGUS FALLS 46.18N 96.07W
04/21/2012 F1 OTTER TAIL MN LAW ENFORCEMENT

THIS TORNADO TOUCHED DOWN NEAR A FARMSTEAD AND TRACKED
EASTWARD FOR ABOUT TWO MILES BEFORE LIFTING BY 219 PM
CDT. THE TORNADO POPPED THREE EMPTY STEEL BINS OFF THEIR
CONCRETE PADS AND TUMBLED THEM AROUND QUITE VIOLENTLY.
THE TORNADO ALSO TORE THE DOORS OFF AN ENCLOSED POLE
SHED...TORE THE ROOFING PANELS OFF AND UPLIFTED AND
DISPLACED THE RAFTERS. MAXIMUM WIDTH ESTIMATED AT 50
YARDS AND PEAK WINDS TO 90 MPH.

0245 PM HAIL 3 SW ASHBY 46.06N 95.86W
04/21/2012 E0.75 INCH GRANT MN NEWSPAPER

AN INCH OR MORE OF PEA TO PENNY SIZED HAIL CAUSED VERY
ICY CONDITIONS ALONG STRETCHES OF INTERSTATE 94 THROUGH
NORTHEASTERN GRANT COUNTY.

0250 PM FUNNEL CLOUD 7 E ELBOW LAKE 45.99N 95.83W
04/21/2012 GRANT MN LAW ENFORCEMENT


&&

$$

GGUST

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 251934
SWODY1
SPC AC 251933

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0233 PM CDT WED APR 25 2012

VALID 252000Z - 261200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE MID MS/OH VALLEY
REGION...

LATEST OBSERVATIONAL DATA CONTINUE TO SUPPORT THE IDEA OF OVERLY
AGGRESSIVE MODELS IN REGARDS TO MOISTURE RETURN ACROSS THE MID MS/OH
VALLEY REGION. SFC DEW POINTS ARE STRUGGLING TO REACH 60F ACROSS
MO/SRN IL AND COMBINED WITH A STRONG CAP THIS DOES NOT BODE WELL FOR
WARM SECTOR TSTM DEVELOPMENT. ALTHOUGH STEEP LAPSE RATES ARE IN
PLACE WEAKER MUCAPE WILL LIKELY LEAD TO WEAKER CONVECTIVE UPDRAFTS.
FOR THIS REASON HAVE OPTED TO LOWER THE THREAT OF SIGNIFICANT SEVERE
HAIL. LATEST VIS SATELLITE IMAGERY EXHIBITS A CONSIDERABLE AMOUNT
OF MID LEVEL CONVECTION ATOP THE CAP FROM ERN IA INTO SRN IND AND
THIS ACTIVITY IS EXPANDING IN AREAL COVERAGE...THROUGH ONLY
SCATTERED SHOWERS ARE ACTUALLY REACHING THE GROUND BENEATH THE
STRONGEST UPDRAFTS. EVEN SO IT APPEARS SUSTAINED SWLY FEED OF WARM
ADVECTION WILL CONTRIBUTE TO ELEVATED THUNDERSTORMS ALONG THE COOL
SIDE OF THE BOUNDARY FROM IL INTO SRN OH/NRN KY. GIVEN THE CAP THIS
MAY TAKE SOME TIME AND CONVECTION SHOULD BE CONCENTRATED DURING THE
OVERNIGHT HOURS RATHER THAN A LATE AFTERNOON SCENARIO.

..DARROW.. 04/25/2012

.PREV DISCUSSION... /ISSUED 1130 AM CDT WED APR 25 2012/

...MID MS/OH VALLEY REGION THROUGH TONIGHT...
A SUBTLE MID-UPPER SPEED MAX OVER SD/NEB/IA WILL TRANSLATE SEWD TO
THE LOWER OH VALLEY BY TONIGHT. THE WEAK WAVE ALOFT WILL BE
ACCOMPANIED BY A REMNANT LEE CYCLONE WHICH WILL LIKEWISE DEVELOP
ESEWD FROM NW IA/SW MN ALONG A SURFACE WARM FRONT TO NW IL THIS
EVENING AND OH BY 26/12Z. 12Z SOUNDINGS REVEAL THAT A VERY WARM
ELEVATED MIXED LAYER HAS SPREAD EWD TO THE ERN PLAINS...AND THIS
LAPSE RATE PLUME WILL EXTEND AS FAR EWD AS THE MID MS/LOWER OH
VALLEY REGION BY THIS EVENING. MEANWHILE...LOW-LEVEL MOISTURE
RETURN IS UNDERWAY BENEATH THE MIDLEVEL LAPSE RATE PLUME AND AN
ASSOCIATED CAP. RECENT SHORT-TERM MODEL FORECAST...ASIDE FROM THE
HRRR...HAVE ALL DISPLAYED SERIOUS OVER-FORECAST BIASES IN THE
BOUNDARY LAYER MOISTURE PROFILES...WITH FORECAST ERRORS OF 1.5-2
G/KG IN 100 MB MEAN MIXING RATIOS...OR 5-7 F TOO HIGH FOR MEAN
BOUNDARY LAYER DEWPOINTS. THESE MOISTURE FORECAST ERRORS RESULT IN
SUBSTANTIAL OVER-FORECASTS OF CAPE...AND UNDER-FORECASTS OF
CONVECTIVE INHIBITION. INSTEAD OF MODEL FORECASTS OF 64-70 F
DEWPOINTS FROM OK-IL BY 00Z...EXPECT VALUES TO RANGE FROM 59-64 F
ACROSS THE SAME AREA.

THE MOISTURE ERRORS ALSO APPEAR TO BE IMPACTING CONVECTIVE
PRECIPITATION FORECASTS...INCLUDING THE STRONG MCS SIGNALS NOTED IN
THE CONVECTION-ALLOWING NSSL ARW AND HIGH-RES EAST/WEST WINDOWS OF
THE NMM. CONVERSELY...MORNING HRRR FORECASTS ARE SUBSTANTIALLY
DRIER IN THE BOUNDARY LAYER /PERHAPS TOO DRY/...AND STORM INTENSITY
IS MUCH REDUCED FROM THE OTHER MODEL FORECASTS. GIVEN OBSERVATIONAL
TRENDS AND LIKELY MODEL FORECAST BIASES...THE SEVERE STORM RISK
APPEARS TO BE LOWER THAN PREVIOUSLY ANTICIPATED ACROSS THE OH VALLEY
THIS EVENING INTO TONIGHT.

...NRN ROCKIES THIS AFTERNOON/EVENING...
CLOUD COVER IS MORE EXTENSIVE THIS MORNING COMPARED TO PREVIOUS
MORNINGS...AND REGIONAL SOUNDINGS SUPPORT A GRADUAL TRANSITION TO A
SOMEWHAT COOLER/MORE MOIST ENVIRONMENT THROUGH TOMORROW.
STILL...POCKETS OF SURFACE HEATING SHOULD AGAIN SUPPORT THUNDERSTORM
DEVELOPMENT /ESPECIALLY OVER THE HIGH TERRAIN/. THE COMBINATION OF
AT LEAST WEAK INSTABILITY AND DEEP-LAYER SWLY FLOW WILL SUPPORT SOME
RISK OF ORGANIZED STORM CLUSTERS CAPABLE OF PRODUCING ISOLATED
STRONG/DAMAGING GUSTS AND MARGINALLY SEVERE HAIL.

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 251728
SWODY2
SPC AC 251727

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1227 PM CDT WED APR 25 2012

VALID 261200Z - 271200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE CNTRL/SRN HIGH
PLAINS...

...CNTRL/SRN HIGH PLAINS...

WELL DEFINED UPPER LOW OFF THE SRN CA/NRN BAJA COAST...CENTERED NEAR
29N/127W...WILL EJECT INLAND EARLY IN THE DAY2 PERIOD BEFORE LIFTING
NEWD INTO CO/NM BY 27/00Z. THIS FEATURE WILL THEN SHIFT INTO THE
HIGH PLAINS DURING THE OVERNIGHT PERIOD. AS THE TROUGH SHIFTS
ACROSS THE ROCKIES LOW LEVEL FLOW WILL UNDOUBTEDLY RESPOND AND
BECOME DECIDEDLY SELY ACROSS THE HIGH PLAINS. WHILE THE LATEST
SHORT RANGE MODELS HAVE STRUGGLED RECENTLY REGARDING THE AGGRESSIVE
BOUNDARY LAYER MOISTURE RETURN...IT APPEARS A LEGITIMATE MOISTURE
SURGE WILL SPREAD ACROSS THE SRN PLAINS WARM SECTOR OVER THE NEXT
24-48HR AND 60-65 SFC DEW POINTS MAY BE IN PLACE ACROSS THE ERN
TX/OK PANHANDLE REGION BY PEAK HEATING. TIMING OF THE UPPER TROUGH
WILL FAVOR OVERNIGHT CONVECTION THOUGH STRONG BOUNDARY LAYER HEATING
SHOULD CONTRIBUTE TO DESTABILIZATION WITHIN THE UPSLOPE REGION FROM
THE TX PANHANDLE INTO EXTREME SERN CO. FOR THIS REASON IT APPEARS
SCATTERED THUNDERSTORMS WILL BEGIN DEVELOPING AROUND 21-22Z.
FORECAST SOUNDINGS SUGGEST SBCAPE COULD EASILY EXCEED 2000 J/KG
WITHIN A SHEARED ENVIRONMENT THAT WILL STRONGLY SUPPORT SUPERCELLS.
FAVORABLY SHEARED AND BACKED LOW LEVEL FLOW ALSO LENDS CREDENCE TO
THE POSSIBILITY OF TORNADOES. HAVE INCREASED THE SEVERE PROBS
ACROSS THE HIGH PLAINS TO ACCOUNT FOR THE LIKELIHOOD OF POTENTIALLY
TORNADIC SUPERCELLS IN ADDITION TO VERY LARGE HAIL. LATE
AFTERNOON/EVENING SUPERCELLS WILL ALSO DEVELOP FARTHER NORTH ACROSS
ERN CO WITHIN STRONGER ZONE OF FORCED ASCENT. THIS ACTIVITY COULD
EASILY SPREAD INTO SWRN NEB/NWRN KS BY MIDNIGHT AS LLJ INCREASES
DURING THE OVERNIGHT PERIOD.

...TN VALLEY TO MIDDLE ATLANTIC...

DIGGING UPPER TROUGH OVER THE OH VALLEY/NEW ENGLAND STATES WILL
ENSURE SFC PRESSURES RISE WEST OF THE APPALACHIANS DURING THE DAY2
PERIOD. THIS IN TURN WILL FORCE A COLD FRONT ACROSS WV/KY INTO TN
DURING THE LATE AFTERNOON HOURS. EARLY IN THE PERIOD IT APPEARS
STRONG LOW LEVEL WARM ADVECTION WILL BE PARTLY RESPONSIBLE FOR
THUNDERSTORM CLUSTERS THAT WILL SPREAD ACROSS PORTIONS OF THE MIDDLE
ATLANTIC REGION AHEAD OF SFC LOW. THIS EARLY ACTIVITY IS NOT
EXPECTED TO BE PARTICULARLY SEVERE AS INSTABILITY WILL BE SOMEWHAT
LACKING. HOWEVER...THERE IS SOME CONCERN THAT STRONG BOUNDARY LAYER
HEATING WILL CONTRIBUTE TO SIGNIFICANT INSTABILITY ALONG THE
ADVANCING COLD FRONT. WITH WEAK HEIGHT RISES EXPECTED ALONG THE
TRAILING BOUNDARY IT/S NOT ENTIRELY CLEAR HOW MUCH CONVECTION WILL
EVOLVE IN THE WAKE OF THE AFOREMENTIONED UPPER TROUGH. ADEQUATE
SHEAR WILL BE IN PLACE FOR POTENTIAL STORM ORGANIZATION AND A SLIGHT
RISK MAY BE REQUIRED IN LATER OUTLOOKS TO ACCOUNT FOR ISOLATED
SUPERCELLS. AT THIS TIME WILL MAINTAIN 5% SEVERE PROBS ALONG THE
ADVANCING BOUNDARY...BUT IF IT BECOMES MORE CLEAR THAT STORMS WILL
FORM IN GREATER CONCENTRATION THEN THESE PROBS WILL BE INCREASED TO
ACCOUNT FOR DAMAGING WINDS/HAIL.

..DARROW.. 04/25/2012

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 251632
SWODY1
SPC AC 251630

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1130 AM CDT WED APR 25 2012

VALID 251630Z - 261200Z

...THERE IS A SLGT RISK OF SVR TSTMS THIS EVENING THROUGH TONIGHT
FOR PARTS OF THE MID MS AND OH VALLEYS...

...MID MS/OH VALLEY REGION THROUGH TONIGHT...
A SUBTLE MID-UPPER SPEED MAX OVER SD/NEB/IA WILL TRANSLATE SEWD TO
THE LOWER OH VALLEY BY TONIGHT. THE WEAK WAVE ALOFT WILL BE
ACCOMPANIED BY A REMNANT LEE CYCLONE WHICH WILL LIKEWISE DEVELOP
ESEWD FROM NW IA/SW MN ALONG A SURFACE WARM FRONT TO NW IL THIS
EVENING AND OH BY 26/12Z. 12Z SOUNDINGS REVEAL THAT A VERY WARM
ELEVATED MIXED LAYER HAS SPREAD EWD TO THE ERN PLAINS...AND THIS
LAPSE RATE PLUME WILL EXTEND AS FAR EWD AS THE MID MS/LOWER OH
VALLEY REGION BY THIS EVENING. MEANWHILE...LOW-LEVEL MOISTURE
RETURN IS UNDERWAY BENEATH THE MIDLEVEL LAPSE RATE PLUME AND AN
ASSOCIATED CAP. RECENT SHORT-TERM MODEL FORECAST...ASIDE FROM THE
HRRR...HAVE ALL DISPLAYED SERIOUS OVER-FORECAST BIASES IN THE
BOUNDARY LAYER MOISTURE PROFILES...WITH FORECAST ERRORS OF 1.5-2
G/KG IN 100 MB MEAN MIXING RATIOS...OR 5-7 F TOO HIGH FOR MEAN
BOUNDARY LAYER DEWPOINTS. THESE MOISTURE FORECAST ERRORS RESULT IN
SUBSTANTIAL OVER-FORECASTS OF CAPE...AND UNDER-FORECASTS OF
CONVECTIVE INHIBITION. INSTEAD OF MODEL FORECASTS OF 64-70 F
DEWPOINTS FROM OK-IL BY 00Z...EXPECT VALUES TO RANGE FROM 59-64 F
ACROSS THE SAME AREA.

THE MOISTURE ERRORS ALSO APPEAR TO BE IMPACTING CONVECTIVE
PRECIPITATION FORECASTS...INCLUDING THE STRONG MCS SIGNALS NOTED IN
THE CONVECTION-ALLOWING NSSL ARW AND HIGH-RES EAST/WEST WINDOWS OF
THE NMM. CONVERSELY...MORNING HRRR FORECASTS ARE SUBSTANTIALLY
DRIER IN THE BOUNDARY LAYER /PERHAPS TOO DRY/...AND STORM INTENSITY
IS MUCH REDUCED FROM THE OTHER MODEL FORECASTS. GIVEN OBSERVATIONAL
TRENDS AND LIKELY MODEL FORECAST BIASES...THE SEVERE STORM RISK
APPEARS TO BE LOWER THAN PREVIOUSLY ANTICIPATED ACROSS THE OH VALLEY
THIS EVENING INTO TONIGHT.

...NRN ROCKIES THIS AFTERNOON/EVENING...
CLOUD COVER IS MORE EXTENSIVE THIS MORNING COMPARED TO PREVIOUS
MORNINGS...AND REGIONAL SOUNDINGS SUPPORT A GRADUAL TRANSITION TO A
SOMEWHAT COOLER/MORE MOIST ENVIRONMENT THROUGH TOMORROW.
STILL...POCKETS OF SURFACE HEATING SHOULD AGAIN SUPPORT THUNDERSTORM
DEVELOPMENT /ESPECIALLY OVER THE HIGH TERRAIN/. THE COMBINATION OF
AT LEAST WEAK INSTABILITY AND DEEP-LAYER SWLY FLOW WILL SUPPORT SOME
RISK OF ORGANIZED STORM CLUSTERS CAPABLE OF PRODUCING ISOLATED
STRONG/DAMAGING GUSTS AND MARGINALLY SEVERE HAIL.

..THOMPSON/ROGERS.. 04/25/2012

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WATCHES: Test...tornado Watch - Number 9992...test

WWUS20 KWNS 251603
SEL2
SPC WW 251603
SDZ000-251600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TEST...TORNADO WATCH - NUMBER 9992...TEST
NWS STORM PREDICTION CENTER NORMAN OK
1103 AM CDT WED APR 25 2012

THE NWS STORM PREDICTION CENTER HAS CANCELLED...TEST...
TORNADO WATCH NUMBER 9992 ISSUED AT 1005 AM CDT FOR PORTIONS OF

SOUTH DAKOTA

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KPDT [251517]: Preliminary Local Storm Report

NWUS56 KPDT 251517
LSRPDT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PENDLETON OR
817 AM PDT WED APR 25 2012

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

0630 PM HAIL FOSSIL 45.00N 120.21W
04/23/2012 E1.00 INCH WHEELER OR CO-OP OBSERVER

HAIL DAMAGE TO RECREATIONAL VEHICLE IN FOSSIL.

0630 PM FLOOD FOSSIL 45.00N 120.21W
04/23/2012 WHEELER OR CO-OP OBSERVER

MINOR FLOODING ON BUTTE CREEK.

&&

$$

JAS

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WATCHES: Test...tornado Watch Number 9992...test

WWUS20 KWNS 251501
SEL2
SPC WW 251501
SDZ000-251600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TEST...TORNADO WATCH NUMBER 9992...TEST
NWS STORM PREDICTION CENTER NORMAN OK
1005 AM CDT WED APR 25 2012

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

SOUTH DAKOTA

EFFECTIVE THIS WEDNESDAY MORNING FROM 1005 AM UNTIL 1100 AM CDT.

TORNADOES...THUNDERSTORM WIND GUSTS TO 0 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TEST TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 105
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST
NORTHWEST OF RAPID CITY SOUTH DAKOTA TO 20 MILES NORTHEAST OF
BROOKINGS SOUTH DAKOTA. FOR A COMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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...THIS IS A TEST WATCH FOR THE STATE OF SD

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 0 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 0. MEAN STORM MOTION VECTOR 0000.

...PETERS

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KLUB [251418]: Preliminary Local Storm Report...summary

NWUS54 KLUB 251418
LSRLUB

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LUBBOCK TX
916 AM CDT WED APR 25 2012

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

0818 PM TSTM WND GST 2 SSW MULESHOE 34.20N 102.74W
04/24/2012 M60 MPH BAILEY TX MESONET

WEST TEXAS MESONET REPORT

0845 PM TSTM WND GST 1 NE AMHERST 34.02N 102.40W
04/24/2012 M59 MPH LAMB TX MESONET

WEST TEXAS MESONET REPORT

0920 PM NON-TSTM WND GST 1 NE AMHERST 34.02N 102.40W
04/24/2012 M64 MPH LAMB TX MESONET

WEST TEXAS MESONET REPORT

0930 PM TSTM WND DMG 5 S SPADE 33.85N 102.15W
04/24/2012 LAMB TX METEOROLOGIST

1 POWER POLE SNAPPED AND 2 OTHER POWER POLES BENT. TIME
ESTIMATED.

&&

EVENT NUMBER LUB1200167 LUB1200168 LUB1200169 LUB1200170

$$

GDS

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 251251
SWODY1
SPC AC 251249

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0749 AM CDT WED APR 25 2012

VALID 251300Z - 261200Z

...THERE IS A SLGT RISK OF SVR TSTMS LATE THIS AFTERNOON INTO
TONIGHT ACROSS PORTIONS OF THE MIDWEST AND OH VALLEY INTO CNTRL
APPALACHIANS...

...SYNOPSIS...

100+ KT MIDLEVEL JET STREAK CENTERED NEAR 41N/143W WILL DEVELOP SEWD
TOWARD THE NRN CA COAST...SUPPORTING THE OPENING AND SUBSEQUENT EWD
PROGRESSION OF UPPER LOW FROM VICINITY OF 30N/128W INTO THE LOWER CO
VALLEY BY 26/12Z. THIS PATTERN EVOLUTION COUPLED WITH THE SEWD
MOVEMENT OF A SHORTWAVE TROUGH FROM NRN MANITOBA INTO THE UPPER
GREAT LAKES WILL CONTRIBUTE TO THE AMPLIFICATION AND EWD DEVELOPMENT
OF MIDLEVEL RIDGE FROM THE INTER-MOUNTAIN WEST INTO THE HIGH
PLAINS.

AT THE SURFACE...LOW PRESSURE OVER SWRN MN WILL DEVELOP SEWD TO
VICINITY OF THE QUAD CITIES BY 26/00Z BEFORE ACCELERATING INTO CNTRL
OH BY THE END OF THE D1 PERIOD. THIS MIGRATORY CYCLONE WILL TRACK
ALONG A WARM FRONT WHICH WILL DEVELOP EWD ACROSS THE OH VALLEY
WITHIN A PERSISTENT LOW-LEVEL WAA REGIME. THE AREA OF LOW PRESSURE
WILL BE TRAILED BY A COLD FRONT WHICH WILL ADVANCE SWD FROM THE NRN
PLAINS AND UPPER MS VALLEY. A PRE-FRONTAL TROUGH IS FORECAST TO
STRENGTHEN TODAY...EXTENDING FROM THE SURFACE LOW SWWD THROUGH NWRN
MO TO S-CNTRL KS WHERE IT WILL LINK WITH A DRYLINE STRETCHING SWD
THROUGH WRN OK INTO W-CNTRL TX.

...MIDWEST/OH VALLEY INTO CNTRL APPALACHIANS THIS AFTERNOON AND
TONIGHT...

RECENT OBSERVATIONAL DATA AND NUMERICAL GUIDANCE HAVE BRED
INCREASING UNCERTAINTY IN THE CONVECTIVE FORECAST LATER TODAY INTO
TONIGHT. MOISTURE QUALITY REMAINS PROBLEMATIC WITH 12Z REGIONAL
SOUNDINGS SHOWING LOWEST 100-MB MEAN-MIXING RATIOS OF ONLY 6-9 G/KG.
THIS COUPLED WITH INCREASING MID AND HIGH-LEVEL CLOUDINESS MAY
IMPACT THE DEGREE OF INSTABILITY THAT DEVELOPS TODAY.
FINALLY...THERE IS SOME INDICATION THAT FORCING ASSOCIATED WITH AN
UPSTREAM IMPULSE MAY MOVE ACROSS THE REGION FAIRLY EARLY
TODAY...PRIOR TO ENVIRONMENT SUFFICIENTLY DESTABILIZING.

BASED ON AN ARRAY OF MODEL SOLUTIONS...THE CORRIDOR FROM E-CNTRL IL
ACROSS CNTRL/SRN IND INTO SWRN OH AND N-CNTRL KY APPEARS TO HAVE THE
HIGHEST LIKELIHOOD OF EXPERIENCING SEVERE WEATHER FROM LATE THIS
AFTERNOON INTO TONIGHT. THIS REGION WILL RESIDE ON THE ERN FRINGE
OF STRONGER CAP ASSOCIATED WITH THE EML WHERE INCREASING BOUNDARY
LAYER MOISTURE AND THE STEEP MIDLEVEL LAPSE RATES WILL YIELD MLCAPE
VALUES RANGING FROM AROUND 1000 J/KG INVOF WARM FRONT TO POTENTIALLY
AS HIGH AS 2000-3000 J/KG OVER WRN IL. THIS INSTABILITY WILL
COINCIDE WITH A KINEMATIC ENVIRONMENT FEATURING A VERTICALLY VEERING
WIND PROFILE /ESPECIALLY ALONG WARM FRONT/ AND 40-50 KT OF DEEP NWLY
SHEAR.

INITIAL STORM MODE WILL LIKELY BE SUPERCELLULAR WITH AN ATTENDANT
RISK FOR LARGE-HAIL...DAMAGING WINDS...AND PERHAPS A TORNADO OR TWO.
THEREAFTER...A NUMBER OF CONVECTION-ALLOWING MODEL SOLUTIONS
INDICATE POTENTIAL UPSCALE GROWTH INTO A BOWING MCS. SHOULD THIS
SCENARIO UNFOLD...THE THREAT FOR DAMAGING WINDS AND HAIL WILL
CONTINUE INTO TONIGHT PERHAPS AS FAR E AS THE CNTRL APPALACHIANS.

...OZARKS...

THE MAJORITY OF MODEL GUIDANCE SUGGESTS THAT THE AIR MASS ACROSS
REGION WILL REMAIN CAPPED TO SURFACE-BASED TSTM DEVELOPMENT.
HOWEVER...OUTLIER SOLUTIONS DO INDICATE THE POTENTIAL FOR ISOLATED
TSTM DEVELOPMENT LATE THIS AFTERNOON AND EVENING ALONG PRE-FRONTAL
TROUGH WHICH WILL TRAIL OH VALLEY SURFACE LOW. INSPECTION OF
FORECAST SOUNDINGS SUGGEST THAT STRONG DAYTIME HEATING AND
CONVERGENCE ALONG THIS BOUNDARY MAY BE SUFFICIENT FOR STORM
INITIATION. ASSUMING A STORM CAN BECOME SUSTAINED...THE COMBINATION
OF MODERATE-STRONG INSTABILITY AND MODEST DEEP-LAYER SHEAR SUGGEST A
RISK FOR SEVERE WEATHER. AS SUCH...LOW PROBABILITIES HAVE BEEN
INCLUDED FOR THIS REGION.

...NRN ROCKIES...

LATEST MODEL GUIDANCE SUGGESTS THAT A WEAK MIDLEVEL IMPULSE EMBEDDED
WITHIN SUBTROPICAL MOISTURE PLUME OVER THE SRN SIERRA-NEVADAS WILL
APPROACH THE REGION LATER TODAY. FORCING ASSOCIATED WITH THIS
FEATURE WILL AUGMENT DAYTIME HEATING ALONG THE HIGH TERRAIN TO GIVE
RISE TO ISOLATED-WIDELY SCATTERED TSTMS LATE THIS AFTERNOON AND
EVENING. SIMILAR TO PREVIOUS DAYS...THE PRESENCE OF STEEP LAPSE
RATES...PW VALUES OF 0.5-0.8 INCH AND 40-45 KT OF DEEP-LAYER SHEAR
WILL SUPPORT A FEW STRONG-MARGINALLY SEVERE STORMS CAPABLE OF HAIL
AND STRONG WIND GUSTS.

..MEAD/LEITMAN.. 04/25/2012

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KLBF [251201]: Preliminary Local Storm Report...summary

NWUS53 KLBF 251201
LSRLBF

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE NORTH PLATTE NE
701 AM CDT WED APR 25 2012

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

0725 PM TSTM WND GST 2 S ROSCOE 41.11N 101.60W
04/24/2012 E80.00 MPH KEITH NE EMERGENCY MNGR

*** 1 INJ *** SEMI-TRAILER BLOWN OFF INTERSTATE 80 MILE
MARKER 134. WIND SPEED IS ESTIMATED.

0725 PM TSTM WND GST ROSCOE 41.13N 101.60W
04/24/2012 E80.00 MPH KEITH NE EMERGENCY MNGR

TWO CAR GARAGE COMPLETELY DEMOLISHED AND A 12 INCH
DIAMETER PINE TREE IN THE YARD SNAPPED IN HALF 8 FEET
ABOVE THE GROUND.

0725 PM TSTM WND GST ROSCOE 41.13N 101.60W
04/24/2012 E80.00 MPH KEITH NE EMERGENCY MNGR

TWO POWER POLES WERE BENT OVER AT A 45 DEGREE ANGLES DUE
TO STRAIGHT LINE WINDS.

0728 PM TSTM WND GST 4 E ROSCOE 41.13N 101.52W
04/24/2012 E80.00 MPH KEITH NE EMERGENCY MNGR

*** 1 INJ *** CAR BLOWN OFF INTERSTATE 80 AT MILE MARKER
137 DUE TO STRAIGHT LINE WINDS.

&&

$$

SPRINGER

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KSGF [251012]: Preliminary Local Storm Report

NWUS53 KSGF 251012
LSRSGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
512 AM CDT WED APR 25 2012

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

0250 AM NON-TSTM WND DMG 6 SE BATTLEFIELD 37.06N 93.29W
04/25/2012 CHRISTIAN MO AMATEUR RADIO

SIX INCH TREE LIMB BROKEN/SPLIT BY WIND GUST. TIME
APPROXIMATE.


&&

$$

DSA

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KSGF [251003]: Preliminary Local Storm Report

NWUS53 KSGF 251003
LSRSGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
502 AM CDT WED APR 25 2012

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

0247 AM NON-TSTM WND GST ESE BATTLEFIELD 37.12N 93.37W
04/25/2012 M46 MPH GREENE MO MESONET

&&

$$

DSA

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DAY48SVR: Nws Storm Prediction Center Norman Ok

ACUS48 KWNS 250854
SWOD48
SPC AC 250854

DAY 4-8 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0354 AM CDT WED APR 25 2012

VALID 281200Z - 031200Z

...DISCUSSION...
SHORT WAVE DEVELOPMENTS THROUGH THE EXTENDED FORECAST PERIOD REMAIN
HIGHLY UNCERTAIN. HOWEVER...MEDIUM RANGE MODELS ARE SUGGESTIVE THAT
THE BLOCKY UPPER FLOW PATTERN MAY TRANSITION TO A MORE PROGRESSIVE
ONE...AT LEAST ACROSS THE NORTHERN TIER STATES... WHERE A MORE
DISTINCT AND STRONGER ZONAL BELT OF WESTERLIES MAY EVOLVE DURING THE
EARLY TO MIDDLE PORTION OF NEXT WEEK. HIGHER MOISTURE CONTENT AIR
ALSO APPEARS LIKELY TO RETURN INLAND OFF A RECOVERING GULF OF MEXICO
BOUNDARY LAYER THROUGH MOST AREAS EAST OF THE ROCKIES...INCLUDING
65-70F SURFACE DEW POINTS AS FAR NORTH AS THE EAST CENTRAL
PLAINS/LOWER MISSOURI VALLEY REGION BY NEXT TUESDAY/WEDNESDAY.
INCREASING INSTABILITY WILL YIELD INCREASING CONVECTIVE
POTENTIAL...PROBABLY INCLUDING DAILY SEVERE WEATHER THREATS.
HOWEVER...ANY SIGNAL FOR A REGIONAL TYPE SEVERE WEATHER EVENT
REMAINS LOW...AND GENERALLY CONFINED TO THE LATTER PORTIONS OF THE
PERIOD...WHEN PATTERN PREDICTABILITY IS AT ITS LOWEST.

..KERR.. 04/25/2012

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 250742
SWODY3
SPC AC 250741

DAY 3 CONVECTIVE OUTLOOK CORR 1
NWS STORM PREDICTION CENTER NORMAN OK
0241 AM CDT WED APR 25 2012

VALID 271200Z - 281200Z

CORRECTED MINOR WORDING ISSUE

...SYNOPSIS...
MODELS INDICATE THAT THE LARGE-SCALE MID/UPPER FLOW PATTERN WILL
REMAIN BLOCKY THROUGH THIS FORECAST PERIOD...WITH A NUMBER OF
EMBEDDED SMALLER SCALE DEVELOPMENTS REMAINING UNCERTAIN. THIS
INCLUDES THE SUBSEQUENT EVOLUTION OF A HIGH CENTER...WHICH IS
EXPECTED TO DEVELOP OVER THE CENTRAL CANADIAN PROVINCES BY 12Z
FRIDAY...THE SOUTHERN PORTION OF A SPLITTING UPPER IMPULSE MIGRATING
INLAND ACROSS THE PACIFIC NORTHWEST AND NORTHERN INTERMOUNTAIN
REGION...AND ANOTHER LOW EMERGING FROM THE LOWER LATITUDE PACIFIC.
AFTER INITIALLY MAINTAINING ITS CYCLONIC CIRCULATION...MODELS ARE
SUGGESTIVE THAT THE SOUTHERN FEATURE MAY ELONGATE OVER THE MID
MISSOURI VALLEY FRIDAY...TO THE SOUTH OF THE HIGH...WHILE THE HIGHER
LATITUDE IMPULSE REDEVELOPS INTO THE MORE PROMINENT LOW ACROSS THE
NORTHERN ROCKIES.

SOUTH/EAST OF THE HIGH CENTER...AND WEST OF A BROADENING UPPER
CLOSED LOW OVER SOUTHEAST CANADA AND THE NORTHEASTERN U.S...COLD
SURFACE RIDGING MAY NOSE AS FAR SOUTH AS THE MIDDLE MISSISSIPPI AND
LOWER OHIO VALLEYS. AT THE SAME TIME...CONTINUED GRADUAL MOISTENING
OF THE BOUNDARY LAYER OVER THE GULF OF MEXICO MAY OCCUR...BUT A
SUBSTANTIVE INLAND RETURN FLOW STILL APPEARS UNLIKELY.

...CENTRAL PLAINS INTO MIDDLE MISSISSIPPI VALLEY...
GIVEN UNCERTAINTIES ASSOCIATED WITH BOTH THE EVOLVING UPPER PATTERN
AND THE MAGNITUDE OF THE AVAILABLE LOW-LEVEL MOISTURE...
CONTINUATION OF SEVERE POTENTIAL DEVELOPING ON THURSDAY ACROSS THE
CENTRAL HIGH PLAINS REMAINS UNCLEAR...AS A SURFACE WAVE DEVELOPS
EASTWARD ALONG A FRONT INTO THE LOWER PLAINS AND MIDDLE MISSISSIPPI
VALLEY. AT LEAST SOME SIGNAL EXISTS IN THE GUIDANCE FOR A LATE
AFTERNOON ISOLATED SUPERCELL THREAT...AND SUBSEQUENT UPSCALE GROWTH
OF A MESOSCALE CONVECTIVE SYSTEM DURING THE EVENING...SO LOW SEVERE
PROBABILITIES APPEAR WARRANTED. BUT...THERE IS NOT ENOUGH
CONFIDENCE FOR SLIGHT RISK PROBABILITIES AT THE PRESENT TIME.

..KERR.. 04/25/2012

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DAY3SVR: Nws Storm Prediction Center Norman Ok

ACUS03 KWNS 250731
SWODY3
SPC AC 250730

DAY 3 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0230 AM CDT WED APR 25 2012

VALID 271200Z - 281200Z

...SYNOPSIS...
MODELS INDICATE THAT THE LARGE-SCALE MID/UPPER FLOW PATTERN WILL
REMAIN BLOCKY THROUGH THIS FORECAST PERIOD...WITH A NUMBER OF
EMBEDDED SMALLER SCALE DEVELOPMENTS REMAINING UNCERTAIN. THIS
INCLUDES THE SUBSEQUENT EVOLUTION OF A HIGH CENTER...WHICH IS
EXPECTED TO DEVELOP OVER THE CENTRAL CANADIAN PROVINCES BY 12Z
FRIDAY...THE SOUTHERN PORTION OF A SPLITTING UPPER IMPULSE MIGRATING
INLAND ACROSS THE PACIFIC NORTHWEST AND NORTHERN INTERMOUNTAIN
REGION...AND ANOTHER LOW EMERGING FROM THE LOWER LATITUDE PACIFIC.
AFTER INITIALLY MAINTAINING ITS CYCLONIC CIRCULATION...MODELS ARE
SUGGESTIVE THAT THE SOUTHERN FEATURE MAY ELONGATE OVER THE MID
MISSOURI VALLEY FRIDAY...TO THE SOUTH OF THE HIGH...WHILE THE HIGHER
LATITUDE IMPULSE REDEVELOPS INTO THE MORE PROMINENT LOW ACROSS THE
NORTHERN ROCKIES.

SOUTH/EAST OF THE HIGH CENTER...AND WEST OF A BROADENING UPPER
CLOSED LOW OVER SOUTHEAST CANADA AND THE NORTHEASTERN U.S...COLD
SURFACE RIDGING MAY NOSE AS FAR SOUTH AS THE MIDDLE MISSISSIPPI AND
LOWER OHIO VALLEYS. AT THE SAME TIME...CONTINUED GRADUAL MOISTENING
OF THE BOUNDARY LAYER OVER THE GULF OF MEXICO MAY CONTINUE...BUT A
SUBSTANTIVE INLAND RETURN FLOW STILL APPEARS UNLIKELY.

...CENTRAL PLAINS INTO MIDDLE MISSISSIPPI VALLEY...
GIVEN UNCERTAINTIES ASSOCIATED WITH BOTH THE EVOLVING UPPER PATTERN
AND THE MAGNITUDE OF THE AVAILABLE LOW-LEVEL MOISTURE...
CONTINUATION OF SEVERE POTENTIAL DEVELOPING ON THURSDAY ACROSS THE
CENTRAL HIGH PLAINS REMAINS UNCLEAR...AS A SURFACE WAVE DEVELOPS
EASTWARD ALONG A FRONT INTO THE LOWER PLAINS AND MIDDLE MISSISSIPPI
VALLEY. AT LEAST SOME SIGNAL EXISTS IN THE GUIDANCE FOR A LATE
AFTERNOON ISOLATED SUPERCELL THREAT...AND SUBSEQUENT UPSCALE GROWTH
OF A MESOSCALE CONVECTIVE SYSTEM DURING THE EVENING...LOW SEVERE
PROBABILITIES APPEAR WARRANTED. BUT...THERE IS NOT ENOUGH
CONFIDENCE FOR SLIGHT RISK PROBABILITIES AT THE PRESENT TIME.

..KERR.. 04/25/2012

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DAY2SVR: Nws Storm Prediction Center Norman Ok

ACUS02 KWNS 250558
SWODY2
SPC AC 250557

DAY 2 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1257 AM CDT WED APR 25 2012

VALID 261200Z - 271200Z

...THERE IS A SLGT RISK OF SVR TSTMS THU AND THU NIGHT ACROSS PARTS
OF THE CNTRL HIGH PLAINS...

...SYNOPSIS...
MODELS CONTINUE TO INDICATE THAT A MID-LEVEL HIGH CENTER WILL BEGIN
TO EVOLVE OVER THE CENTRAL CANADIAN PROVINCES DURING THIS FORECAST
PERIOD. AS THIS OCCURS...A LARGE CLOSED LOW...NOW DIGGING ACROSS
THE NORTHEAST PACIFIC...APPEARS LIKELY TO WEAKEN...WITH AN
ELONGATING/REMNANT CIRCULATION CENTER GRADUALLY SHIFTING INTO THE
BRITISH COLUMBIA COAST...WHILE ANOTHER PORTION SPLITS OFF ACROSS THE
PACIFIC NORTHWEST COAST INTO THE NORTHERN INTERMOUNTAIN REGION. AT
THE SAME TIME...WITHIN A SEPARATE BRANCH OF FLOW TO THE
SOUTH...GUIDANCE SUGGESTS THAT ANOTHER CLOSED LOW WILL GENERALLY
MAINTAIN ITS IDENTITY AS IT ACCELERATES INLAND...ACROSS SOUTHERN
CALIFORNIA/NORTHERN BAJA BY 12Z THURSDAY...INTO THE CENTRAL HIGH
PLAINS BY 12Z FRIDAY.

MEANWHILE...TO THE EAST OF THE HIGH...ANOTHER SIGNIFICANT TROUGH IS
EXPECTED TO DIG ACROSS PARTS OF ONTARIO AND QUEBEC INTO THE
NORTHEASTERN STATES. THIS WILL CONTRIBUTE TO THE MAINTENANCE OF
CYCLONIC MID/UPPER FLOW ACROSS MUCH OF THE EAST...IN THE WAKE OF THE
AMPLIFIED UPPER TROUGH NOW BEGINNING TO DEPART THE ATLANTIC
SEABOARD.

SUBSTANTIVE BOUNDARY LAYER MODIFICATION OVER THE GULF OF MEXICO IN
THE WAKE OF THIS LATTER FEATURE WILL BE SLOW TO OCCUR...AND THE LACK
OF BETTER MOISTURE RETURN OFF THE GULF OF MEXICO SEEMS LIKELY TO
LIMIT THE CONVECTIVE POTENTIAL FOR THIS PERIOD. CONCERN STILL
EXISTS THAT MODELS...PARTICULARLY THE NAM...MAY BE TOO AGGRESSIVE
WITH MOISTENING ALONG AND SOUTH OF A DEVELOPING FRONTAL ZONE
ASSOCIATED WITH THE EVOLVING UPPER PATTERN...FROM PORTIONS OF THE
MID ATLANTIC COAST INTO THE CENTRAL PLAINS BY LATE THURSDAY
AFTERNOON. IT IS POSSIBLE THAT EVAPOTRANSPIRATION COULD AUGMENT A
WEAK MOISTURE INFLUX NOW ONGOING ACROSS THE WESTERN GULF COAST.
HOWEVER...DEW POINTS MAY NOT EXCEED 60-64F...AND EVEN THIS MAY BE
CONFINED TO BENEATH STRONGER MID-LEVEL CAPPING ADVECTING
NORTHEASTWARD ACROSS THE SOUTHERN PLAINS...WITH MID/UPPER 50S MORE
PROBABLE ACROSS THE CENTRAL HIGH PLAINS...AND NOT MUCH HIGHER ACROSS
THE OHIO/TENNESSEE VALLEYS INTO THE MID ATLANTIC STATES.

...CENTRAL HIGH PLAINS...
MOISTENING ALONG AND EAST OF THE DEEPENING LEE SURFACE TROUGH STILL
SHOULD CONTRIBUTE TO SUFFICIENT DESTABILIZATION FOR STRONG/ SEVERE
STORM DEVELOPMENT LATE THURSDAY AFTERNOON AND EVENING...IN THE
PRESENCE OF STEEP LAPSE RATES...AND FORCING/SHEAR ASSOCIATED WITH
THE APPROACHING UPPER IMPULSE. VARIABILITY LINGERS CONCERNING WHEN
THIS FEATURE WILL CROSS THE CENTRAL/SOUTHERN ROCKIES...BUT AT LEAST
ISOLATED TO WIDELY SCATTERED SUPERCELL DEVELOPMENT APPEARS
LIKELY...BEFORE UPSCALE GROWTH INTO ONE OR TWO LARGER STORM CLUSTERS
BECOMES MORE PROBABLE...FROM PARTS OF NORTHEAST COLORADO/SOUTHWEST
NEBRASKA INTO WESTERN KANSAS...BY LATE EVENING.

...OH/TN VALLEY INTO MID ATLANTIC...
MODELS ARE SUGGESTIVE THAT A MID-LEVEL IMPULSE AND ASSOCIATED
SURFACE WAVE MAY BE IN THE PROCESS OF SHIFTING INTO/ACROSS MID
ATLANTIC COASTAL AREAS EARLY IN THE DAY THURSDAY. IN THE WAKE OF
THIS FEATURE...FORCING/FOCUS FOR STORM DEVELOPMENT IS STILL UNCLEAR.
IT MAY BE THAT OROGRAPHY BECOMES THE PRIMARY CONTRIBUTOR TO STORM
INITIATION...AS WEAK TO MODERATE BOUNDARY LAYER DESTABILIZATION
OCCURS NEAR THE CENTRAL/SOUTHERN APPALACHIANS. MODESTLY SHEARED
30-40 KT MEAN WESTERLY LOWER/MID TROPOSPHERIC FLOW WILL SUPPORT AT
LEAST LOW SEVERE PROBABILITIES...BUT IT IS NOT YET CERTAIN THAT
STORM COVERAGE WILL BECOME SUFFICIENT TO SUPPORT A CATEGORICAL
SLIGHT RISK.

..KERR.. 04/25/2012

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KSGF [250540]: Preliminary Local Storm Report

NWUS53 KSGF 250540
LSRSGF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SPRINGFIELD MO
1240 AM CDT WED APR 25 2012

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

1230 AM HAIL 4 E JOPLIN 37.09N 94.44W
04/25/2012 E1.75 INCH JASPER MO PUBLIC

REPORT RELAYED THROUGH 911 CENTER.


&&

$$

DSA

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DAY1SVR: Day 1 Convective Outlook

ACUS01 KWNS 250534
SWODY1
SPC AC 250533

DAY 1 CONVECTIVE OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1233 AM CDT WED APR 25 2012

VALID 251200Z - 261200Z

...THERE IS A SLGT RISK OF SVR TSTMS ACROSS THE MIDWEST/OH VALLEY
REGION...

...SYNOPSIS...
AS ONE PIECE OF THE ERN U.S. UPPER TROUGH SHIFTS NEWD ACROSS NEW
ENGLAND TODAY...THE OVERALL TROUGHING WILL BE SOMEWHAT MAINTAINED AS
A COMBINATION OF WEAK DISTURBANCES MOVING THROUGH CYCLONIC NWLY FLOW
BEHIND THIS TROUGH AND A STRONGER PIECE OF ENERGY DIGS SEWD ACROSS
WRN ONTARIO AND EVENTUALLY INTO THE UPPER GREAT LAKES.

MEANWHILE FARTHER W...THE TWO CLOSED LOWS -- ONE OFF THE BRITISH
COLUMBIA COAST AND THE OTHER OFF THE CA/BAJA COAST -- APPEAR LIKELY
TO BECOME PARTIALLY PHASED THIS PERIOD...AFFECTING THE W COAST AND
EVENTUALLY THE DESERT SW LATE.

AT THE SURFACE...THE MAIN FEATURE WITH RESPECT TO THE SEVERE WEATHER
FORECAST WILL BE A SURFACE LOW -- INITIALLY PROGGED TO LIE INVOF ERN
SD/SWRN MN. THIS LOW IS FORECAST TO SHIFT SEWD ACROSS THE UPPER
MIDWEST THROUGH THE DAY...ALONG A NW-SE WARM FRONT. LATER...THE LOW
SHOULD TURN EWD AND MOVE ACROSS THE OH VALLEY REGION THROUGH THE END
OF THE PERIOD.

...MIDWEST/OH VALLEY REGION...
AS THE AFOREMENTIONED SURFACE LOW SHIFTS SEWD ACROSS IA DURING THE
DAY AND REACHES THE MS RIVER...A SWLY LOW-LEVEL JET IS FORECAST TO
DEVELOP -- NOSING NEWD TOWARD/ACROSS THE SURFACE WARM FRONT. AS THE
MOISTENING BOUNDARY LAYER DESTABILIZES THROUGH THE
AFTERNOON...EXPECT STORM INITIATION TO OCCUR -- LIKELY NEAR AND TO
THE COOL SIDE OF THE FRONT AS WARM SECTOR CAPPING IS LIKELY TO
LARGELY INHIBIT CONVECTIVE DEVELOPMENT. INITIAL DEVELOPMENT SHOULD
OCCUR INVOF ERN IA/NWRN IL...AND WITH STEEP LAPSE RATES/MODERATE
CAPE FUELING THE CONVECTION...INCREASING STORM COVERAGE -- AND
EVENTUALLY UPSCALE GROWTH INTO A BOWING LINE OF STORMS -- APPEARS
POSSIBLE.

INITIAL STORM MODE IS LIKELY TO BE SUPERCELLULAR...WITH LOW-LEVEL
FLOW VEERING RAPIDLY AND INCREASING TO 40 KT FROM THE NW. THESE
STORMS WILL LIKELY BE ACCOMPANIED BY LARGE HAIL...WITH LOCALLY
DAMAGING WINDS AND EVEN AN ISOLATED TORNADO POSSIBLE. PRESUMING
UPSCALE LINEAR GROWTH DOES OCCUR...THREAT FOR WIND WOULD INCREASE --
AIDED BY MID-LEVEL NWLYS ALOFT INCREASING A BIT TO 40 TO 50 KT
DRIVING A FAST-MOVING MCS ACROSS THE OH VALLEY ROUGHLY ALONG THE
WARM FRONTAL ZONE. SOME SEVERE THREAT MAY LINGER WELL INTO THE
OVERNIGHT HOURS -- PARTICULARLY IF THE LINEAR/BOWING MCS CAN
DEVELOP.

...PARTS OF THE PAC NW...
MODEST DESTABILIZATION ACROSS PARTS OF NERN OREGON/SERN WA AND INTO
ID/WRN MT COMBINED WITH HEIGHT FALLS ALOFT ASSOCIATED WITH THE
EVOLVING/COMPLEX/EWD-MOVING UPPER TROUGH SHOULD RESULT IN SCATTERED
CONVECTIVE DEVELOPMENT DURING THE AFTERNOON. WHILE DEGREE OF
INSTABILITY APPEARS TO BE A LIMITING FACTOR FOR APPRECIABLE SEVERE
WEATHER THREAT...ISOLATED POTENTIAL FOR WIND/LOW-END HAIL IS
EXPECTED...WITH THREAT POSSIBLY ENHANCED BY SHEAR PROFILES
SUFFICIENT FOR A FEW LONGER-LIVED UPDRAFTS. THREAT WILL DIMINISH
LATER IN THE EVENING AS THE AIRMASS DIURNALLY STABILIZES.

..GOSS/SMITH.. 04/25/2012

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KLUB [250423]: Preliminary Local Storm Report...summary

NWUS54 KLUB 250423
LSRLUB

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LUBBOCK TX
1123 PM CDT TUE APR 24 2012

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

0818 PM TSTM WND GST 2 SSW MULESHOE 34.20N 102.74W
04/24/2012 M60 MPH BAILEY TX MESONET

WEST TEXAS MESONET REPORT

0845 PM TSTM WND GST 1 NE AMHERST 34.02N 102.40W
04/24/2012 M59 MPH LAMB TX MESONET

WEST TEXAS MESONET REPORT

0920 PM NON-TSTM WND GST 1 NE AMHERST 34.02N 102.40W
04/24/2012 M64 MPH LAMB TX MESONET

WEST TEXAS MESONET REPORT


&&

EVENT NUMBER LUB1200167 LUB1200168 LUB1200169

$$

JWJ

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