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635 

WWUS20 KWNS 111044

SEL3

SPC WW 111044

TXZ000-111500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 373

NWS STORM PREDICTION CENTER NORMAN OK

545 AM CDT THU JUN 11 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SOUTHEAST TEXAS



EFFECTIVE THIS THURSDAY MORNING FROM 545 AM UNTIL 1000 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 45

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES NORTH

NORTHWEST OF COLLEGE STATION TEXAS TO 50 MILES SOUTHEAST OF

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 372...



DISCUSSION...STRONG TO SEVERE STORMS CONTINUE TO SPREAD GENERALLY

SEWD ALONG RESIDUAL OUTFLOW BOUNDARY/WARM FRONT ACROSS ERN/SERN TX

THIS MORNING. MOISTURE FLUX AND INSTABILITY SHOULD MAINTAIN ROBUST

UPDRAFTS WITHIN THE LARGE COMPLEX OF STORMS WHERE STRONGLY VEERED

LOW LEVEL FLOW AND 50KT WLY MID LEVEL JET STREAK ARE PROVIDING

SUFFICIENT BULK SHEAR FOR ORGANIZED STORM STRUCTURE. HAIL AND HIGH

WIND POTENTIAL SHOULD PERSIST WITH THE STRONGER CELLS FOR AT LEAST

ANOTHER 1-2 HOURS AS COMPLEX MOVES TOWARD THE SABINE RIVER/BPT AREA.



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 31030.





...CARBIN

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