SPC Severe Thunderstorm Watch 299

WW 299 SEVERE TSTM KS OK TX 252355Z – 260500Z


URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 299
NWS STORM PREDICTION CENTER NORMAN OK
655 PM CDT FRI MAY 25 2012

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

       SOUTH CENTRAL KANSAS
       WESTERN OKLAHOMA
       EASTERN TEXAS PANHANDLE

EFFECTIVE THIS FRIDAY NIGHT FROM 655 PM UNTIL MIDNIGHT 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 APPROXIMATELY ALONG AND 55
STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES WEST OF ALTUS
OKLAHOMA TO 65 MILES EAST NORTHEAST OF DODGE CITY KANSAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU9).

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...SCATTERED THUNDERSTORMS ARE DEVELOPING ACROSS THE
SOUTHEAST TX PANHANDLE AND SOUTHWEST OK...AHEAD OF AN APPROACHING
UPPER VORTICITY MAX.  HIGH CAPE VALUES AND RATHER STRONG LOWER
TROPOSPHERIC WINDS WILL PROMOTE A RISK OF DAMAGING WINDS AND LARGE
HAIL IN THE STRONGER CELLS THIS EVENING.

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 24025.


...HART

via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0299.html