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WWUS20 KWNS 012050

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OKZ000-TXZ000-020400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 752

NWS STORM PREDICTION CENTER NORMAN OK

350 PM CDT THU OCT 1 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SMALL PART OF SOUTHEAST OKLAHOMA

       LARGE PART OF NORTH CENTRAL AND NORTHEAST TEXAS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 350 PM UNTIL

1100 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 85

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

NORTHWEST OF PARIS TEXAS TO 20 MILES SOUTH OF TEMPLE TEXAS.  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 751...



DISCUSSION...COLD FRONT MOVING SEWD INTO NRN TX ENCOUNTERING AN AIR

MASS THAT HAS BECOME MDTLY UNSTABLE.  WITH MLCAPES AOA 2000 J/KG AND

DEEP LAYER SHEAR OF 30-40 KT...SEVERE THUNDERSTORMS ARE EXPECTED TO

DEVELOP ALONG AND E OF COLD FRONT AS IT CONTINUES 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 550. MEAN STORM

MOTION VECTOR 27025.





...HALES

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