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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 888

NWS STORM PREDICTION CENTER NORMAN OK

235 PM CDT FRI SEP 5 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF WESTERN OKLAHOMA

       SOUTHERN AND EASTERN TEXAS PANHANDLE



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 235 PM UNTIL 900

PM 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 70

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES EAST

NORTHEAST OF GAGE OKLAHOMA TO 25 MILES SOUTHEAST OF PLAINVIEW

TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED

WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).



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 EXPECTED TO DEVELOP SOON ALONG BOTH NE/SW

FRONTAL ZONE TX PANHANDLE AND A LITTLE EWD INTO NWRN OK ALONG E/W

BOUNDARY.  30-40KT OF DEEP LAYER SHEAR...STEEP LAPSE RATES ALONG

WITH 1500 MLCAPE...A FEW SEVERE THUNDERSTORMS ARE LIKELY INCLUDING

POSSIBLE SUPERCELLS.  PRIMARY THREAT WILL BE LARGE HAIL AND LOCAL

DAMAGING WINDS AS STORMS DEVELOP SEWD ACROSS THE WATCH.



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 31025.





...HALES

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