

000 

WWUS20 KWNS 220458

SEL1

SPC WW 220458

KSZ000-OKZ000-TXZ000-220900-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 921

NWS STORM PREDICTION CENTER NORMAN OK

1200 AM CDT WED OCT 22 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL AND SOUTH CENTRAL KANSAS

       NORTHWEST OKLAHOMA AND THE EASTERN OKLAHOMA PANHANDLE

       THE NORTHEAST TEXAS PANHANDLE



EFFECTIVE THIS WEDNESDAY MORNING FROM MIDNIGHT UNTIL 400 AM 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 15 MILES NORTH

NORTHEAST OF RUSSELL KANSAS TO 15 MILES EAST SOUTHEAST OF GAGE

OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 920...



DISCUSSION...LINE OF STORMS ALONG COLD FRONT WILL CONTINUE TO SURGE

ESEWD ACROSS SW/CENTRAL KS...WITH SOME DEVELOPMENT SWD TOWARD NW OK

AND THE TX PANHANDLE.  THOUGH INSTABILITY WILL GRADUALLY DIMINISH

OVERNIGHT AND WITH EWD EXTENT...A WELL-DEVELOPED COLD POOL AND

SEVERAL MEASURED SEVERE GUSTS SUGGEST A CONTINUE WIND DAMAGE THREAT

FOR AT LEAST THE NEXT FEW HOURS.  FARTHER NE INTO CENTRAL

KS...CONVECTION WILL CONTINUE TO FORM ALONG THE WARM FRONT AND AT

THE INTERSECTION OF THIS BOUNDARY WITH THE SQUALL LINE.  LARGE HAIL

AND ISOLATED DAMAGING GUSTS WILL BE THE MAIN SEVERE THREATS.



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 450. MEAN STORM

MOTION VECTOR 28035.





...THOMPSON

