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704 

WWUS20 KWNS 130703

SEL2

SPC WW 130703

OKZ000-TXZ000-131100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 162

NWS STORM PREDICTION CENTER NORMAN OK

205 AM CDT THU MAY 13 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHWEST AND CENTRAL OKLAHOMA

       EXTREME NORTHWEST TEXAS



EFFECTIVE THIS THURSDAY MORNING FROM 205 AM UNTIL 600 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 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 25 MILES WEST

NORTHWEST OF WICHITA FALLS TEXAS TO 15 MILES EAST SOUTHEAST OF

CHANDLER OKLAHOMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 159...WW 160...WW 161...



DISCUSSION...CLUSTER OF SEVERE STORMS IN NW TX/SW OK WILL CONTINUE

TO MOVE NEWD INVOF A COLD FRONT WHICH WILL MOVE SLOWLY SEWD ACROSS

CENTRAL/SW OK.  MODERATE INSTABILITY AND STRONG VERTICAL SHEAR

REMAIN IN THE WARM SECTOR AHEAD OF THESE STORMS...THUS THE THREAT

FOR EMBEDDED SUPERCELLS/BOWS WITH LARGE HAIL AND DAMAGING WINDS WILL

PERSIST FOR AT LEAST A FEW MORE HOURS.



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 24045.





...THOMPSON

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