WATCHES: Severe Thunderstorm Watch Number 285

WWUS20 KWNS 212107
SEL5
SPC WW 212107
KSZ000-OKZ000-TXZ000-220400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 285
NWS STORM PREDICTION CENTER NORMAN OK
410 PM CDT MON MAY 21 2007

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

SOUTHWEST KANSAS
THE OKLAHOMA PANHANDLE
THE TEXAS PANHANDLE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 410 PM UNTIL
1100 PM CDT.

HAIL TO 1.5 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 60
STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF
GARDEN CITY KANSAS TO 30 MILES SOUTH OF AMARILLO TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).

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 282...WW 283...WW 284...

DISCUSSION...BAND OF TSTMS EXPECTED TO INTENSIFY AND MOVE E/NE INTO
THE TX PANHANDLE AND PERHAPS SW KS LATER THIS EVENING...WHERE LOW
LEVEL SHEAR AND DEPTH OF CONVERGENCE SUGGEST A FEW SUSTAINED CELLS
POSING A THREAT FOR HAIL/WIND.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 24025.

..CORFIDI

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