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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 757

NWS STORM PREDICTION CENTER NORMAN OK

515 PM CDT TUE AUG 9 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       THE TEXAS PANHANDLE AND PARTS OF THE TEXAS SOUTH PLAINS



EFFECTIVE THIS TUESDAY AFTERNOON AND WEDNESDAY MORNING FROM 515

PM UNTIL 100 AM CDT.



HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80

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 75 MILES WEST

SOUTHWEST OF AMARILLO TEXAS TO 55 MILES NORTH OF CHILDRESS TEXAS.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 753...WW 754...WW

755...WW 756...



DISCUSSION...SCTD TSTMS WITH THE POTENTIAL FOR DMGG WINDS EXPECTED

OVER PARTS OF W TX THIS EVE...WHERE CONFLUENT LOW LVL SELY FLOW AND

STEEP LOW TO MID LVL LAPSE RATES WILL BE PRESENT BENEATH 15-20 KT

WNWLY MID LVL FLOW.  NOCTURNAL STRENGTHENING OF SLY LLJ MAY SUPPORT

UPSCALE DEVELOPMENT INTO A SMALL MCS LATER THIS EVE.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS.

A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION

VECTOR 32015.





...CORFIDI

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