T-Storm Watch Issued for Western Southern Plains

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URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 100
NWS STORM PREDICTION CENTER NORMAN OK
300 PM CDT WED APR 21 2004

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

SOUTHEAST COLORADO
SOUTHWEST KANSAS
OKLAHOMA PANHANDLE
NORTHEAST TEXAS PANHANDLE

EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 300 PM UNTIL
900 PM CDT.

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

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 75 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST OF LAMAR
COLORADO TO 75 MILES SOUTHEAST OF LIBERAL KANSAS.

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

OTHER WATCH INFORMATION...CONTINUE...WW 98...WW 99...

DISCUSSION...EASTERLY LOW LEVEL WINDS ARE TRANSPORTING MOISTURE
WESTWARD INTO WATCH AREA...WHERE MARGINAL INSTABILITY IS DEVELOPING.
STRONG DAYTIME HEATING AND MINIMAL CAP WILL LIKELY RESULT IN
SCATTERED THUNDERSTORMS THIS AFTERNOON. COLD TEMPERATURES ALOFT AND
SUPERCELL STRUCTURES WILL PROMOTE A RISK OF LARGE HAIL AND DAMAGING
WINDS IN STRONGER CELLS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 27025.