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April 21-24th Severe Weather


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...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 315 PM CDT

FOR SOUTHERN POPE AND EASTERN MASSAC COUNTIES IN SOUTHERN ILLINOIS...

AND NORTHERN GRAVES...WESTERN MARSHALL...EASTERN MCCRACKEN AND

WESTERN LIVINGSTON COUNTIES IN WESTERN KENTUCKY...

AT 252 PM CDT...A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING

QUARTER SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.

THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 3 MILES EAST

OF NEW COLUMBIA TO LOWES...MOVING EAST AT 50 MPH. AT 249 PM...A WIND

GUST OF 79 MPH WAS MEASURED AT BARKLEY AIRPORT IN WEST PAUDCAH. AT

257 PM...AN OFF-DUTY METEOROLOGIST ESTIMATED 70 MPH WINDS AT LOURDES

HOSPITAL IN LONE OAK.

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CON.KPAH.TO.W.0068.000000T0000Z-110423T2015Z/

MASSAC IL-POPE IL-

302 PM CDT SAT APR 23 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM CDT FOR SOUTH

CENTRAL POPE AND EAST CENTRAL MASSAC COUNTIES IN SOUTHERN ILLINOIS...

AT 257 PM CDT...TRAINED SPOTTERS REPORTED A FUNNEL CLOUD ABOUT 3

MILES NORTH OF METROPOLIS. SIGNFICANT DAMAGE HAS BEEN REPORTED IN

METROPOLIS. AT 256 PM CDT...WEATHER SERVICE DOPPLER RADAR CONTINUED

TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.

THIS STORM WAS LOCATED OVER CENTRAL MASSAC COUNTY...MOVING EAST AT

50 MPH.

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need to keep an eye on those cells devloping into what will be the WWA wing og the MCSf

they are right along the old outflow boundary

one just warned

* TORNADO WARNING FOR...

SOUTHWESTERN DAVIESS COUNTY IN NORTHWEST KENTUCKY...

NORTHERN HOPKINS COUNTY IN NORTHWEST KENTUCKY...

MCLEAN COUNTY IN NORTHWEST KENTUCKY...

EASTERN WEBSTER COUNTY IN NORTHWEST KENTUCKY...

* UNTIL 415 PM CDT.

* AT 349 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED

TWO SEVERE THUNDERSTORMS CAPABLE OF PRODUCING A TORNADO. ONE STORM

WAS LOCATED 5 MILES SOUTHEAST OF DIXON. THE OTHER STORM WAS

LOCATED NEAR SLAUGHTERS...MOVING EAST AT 40 MPH

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MESOSCALE DISCUSSION 0538

NWS STORM PREDICTION CENTER NORMAN OK

0502 PM CDT SAT APR 23 2011

AREAS AFFECTED...NRN AR...SERN OK

CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY

VALID 232202Z - 232300Z

INCREASING THUNDERSTORM COVERAGE IS ANTICIPATED OVER THE NEXT FEW

HRS ACROSS PORTIONS OF SERN OK AND NRN AR...ALTHOUGH STILL SOMEWHAT

UNCERTAIN DUE TO THE PRESENCE OF AMPLE CLOUD COVER. SHOULD

CONVECTION BECOME ROOTED IN THE BOUNDARY LAYER...A THREAT OF DMGG

WINDS...LARGE HAIL...AND PERHAPS ISOLATED TORNADOES WILL LIKELY

DEVELOP. A TORNADO WATCH WILL LIKELY BE CONSIDERED SOON...AND PARTS

OF SERN OK CURRENTLY INCLUDED WITHIN SVR WW 187 MAY NEED TO BE

UPGRADED TO A TORNADO WATCH.

RECENT SATELLITE TRENDS INDICATE SOME ENHANCEMENT IN CONVECTION

ACROSS ERN OK INTO NWRN AR ACROSS A STALLED FRONT...AIDED BY WEAK

CONVERGENCE ALONG THE FRONT WITH LOW-LEVEL ISENTROPIC ASCENT FOCUSED

N OF THE FRONT. ADDITIONALLY...WEAK DEEP-LAYER ASCENT APPEARS TO BE

OVERSPREADING THE REGION FROM THE SRN PLAINS /PER WATER VAPOR

IMAGERY/. DESPITE PERSISTENT CLOUD COVER ACROSS THE WARM

SECTOR...TEMPERATURES HAVE HEATED INTO THE MID-UPPER 70S. AMPLE

LOW-LEVEL MOISTURE COMBINED WITH THE PRESENCE OF AN EML OVERHEAD HAS

YIELDED MLCAPE VALUES RANGING BETWEEN 1500-2500 J/KG...WITH LITTLE

TO NO CINH. SHORT TERM HI-RES MODEL GUIDANCE INDICATES AN UPSWING IN

SFC-BASED CONVECTION THROUGH 00Z. KINEMATIC FIELDS WILL BE FAVORABLE

FOR SUPERCELLS...GIVEN EFFECTIVE BULK SHEAR 40-50 KTS.

ADDITIONALLY...THE POTENTIAL FOR TORNADOES MAY ALSO

EXIST...PARTICULARLY ALONG THE STALLED FRONT WHERE 0-1 KM SRH

HELICITY IS MAXIMIZED /200-250 M^2 S^-2/.

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THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...

COOKE COUNTY IN NORTH CENTRAL TEXAS...

NORTHWESTERN GRAYSON COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 645 PM CDT

* AT 551 PM CDT...STORM SPOTTERS AND DOPPLER RADAR OBSERVED A

DEVELOPING TORNADO 5 MILES SOUTHWEST OF LINDSAY...MOVING NORTHEAST

AT 15 MPH.

* THE TORNADO WILL BE NEAR...

LINDSAY AROUND 610 PM CDT...

GAINESVILLE AROUND 625 PM CDT...

CALLISBURG AROUND 645 PM CDT...

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Poor St. Louis has had everything but the kitchen sink lately.

Latest Conditions in Saint Louis, MOChoose Your Front Page Cityspacer.gifApr 23

6:51 pm ntsra.jpg

Thunderstorm Ice Crystals Thunderstorm Dust Storm 63°F

(17°C) spacer.gifspacer.gif Select A City: Alton, IL Cahokia, IL Centralia, IL Chesterfield, MO Columbia, MO Farmington, MO Jefferson City, MO Pittsfield, IL Quincy, IL Saint Charles, MO Saint Louis, MO Salem, IL Sparta, IL

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BULLETIN - EAS ACTIVATION REQUESTED

TORNADO WARNING

NATIONAL WEATHER SERVICE FORT WORTH TX

823 PM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A

* TORNADO WARNING FOR...

NORTHERN COMANCHE COUNTY IN NORTH CENTRAL TEXAS...

* UNTIL 915 PM CDT

* AT 823 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED A

DEVELOPING TORNADO 10 MILES SOUTHWEST OF DE LEON...MOVING EAST

AT 20 MPH. THIS STORM HAS A HISTORY OF PRODUCING A TORNADO.

* THE TORNADO WILL BE NEAR...

DE LEON AROUND 850 PM CDT...

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