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019 

WWUS20 KWNS 312327

SEL9

SPC WW 312327

OKZ000-TXZ000-010600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 239

NWS STORM PREDICTION CENTER NORMAN OK

625 PM CDT MON MAY 31 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       THE CENTRAL AND EASTERN OKLAHOMA PANHANDLE

       THE TEXAS PANHANDLE AND TEXAS SOUTH PLAINS



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 625 PM UNTIL

100 AM 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 60

STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES NORTHEAST OF

GUYMON OKLAHOMA TO 45 MILES EAST SOUTHEAST OF PLAINVIEW TEXAS.

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.



OTHER WATCH INFORMATION...CONTINUE...WW 238...



DISCUSSION...TSTMS NOW FORMING FROM NW OF LUB TO SW OF AMA EXPECTED

TO MOVE/DEVELOP SLOWLY EWD THROUGH THIS EVE...WITH SOME

INTENSIFICATION POSSIBLE.  RESULTING MCS...WITH A FEW EMBEDDED

SUSTAINED STORMS...MAY YIELD SVR HAIL AND DMGG WIND AS STORMS

ENCOUNTER INCREASED MOISTURE AND RESIDUAL LOW LVL LAPSE RATE AXIS

OVER THE LWR PLNS.  A SEPARATE MCS ALSO MAY EVOLVE THIS EVE OVER THE

NW TX PANHANDLE...AS EXISTING SE NM SUPERCELL MERGES WITH DISCRETE

STORMS NOW FORMING ALONG NW/SE CONFLUENCE ZONE OVER REGION.  THIS

SYSTEM SHOULD MOVE GENERALLY E OR ESE...AND WILL POSE A THREAT FOR

LARGE HAIL/DMGG WIND AND POSSIBLY A TORNADO.



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 550. MEAN STORM

MOTION VECTOR 27015.





...CORFIDI

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