WATCHES: Severe Thunderstorm Watch Number 217

WWUS20 KWNS 231434
SEL7
SPC WW 231434
KSZ000-OKZ000-TXZ000-232100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 217
NWS STORM PREDICTION CENTER NORMAN OK
935 AM CDT WED APR 23 2008

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

PARTS OF SOUTHWEST KANSAS
MUCH OF WESTERN OKLAHOMA
LARGE PART OF TEXAS PANHANDLE

EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 935 AM UNTIL
400 PM CDT.

HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 90
STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF
DODGE CITY KANSAS TO 65 MILES SOUTHEAST OF LUBBOCK TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

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

DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY
ACROSS WATCH AREA AS A MOIST...VERY UNSTABLE AIR MASS SPREADS NWD
SRN HI PLAINS AHEAD OF S/W TROUGH. WITH HEATING AND INCREASING
UPWARD MOTION AHEAD OF TROUGH...SEVERE THUNDERSTORMS WILL INCREASE
WITH LARGE HAIL INITIALLY PRIMARY THREAT. DURING
AFTERNOON...SUPERCELLS WILL BECOME MORE OF A CONCERN WHICH WILL
INCREASE SEVERE THREAT INCLUDING POSSIBLE TORNADOES.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 24025.

...HALES

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