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992 

WWUS20 KWNS 110811

SEL2

SPC WW 110811

TXZ000-111300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 372

NWS STORM PREDICTION CENTER NORMAN OK

315 AM CDT THU JUN 11 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTHERN AND EASTERN TEXAS



EFFECTIVE THIS THURSDAY MORNING FROM 315 AM UNTIL 800 AM CDT.



HAIL TO 2 INCHES 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 35

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 10 MILES NORTH

NORTHWEST OF MINERAL WELLS TEXAS TO 35 MILES SOUTH SOUTHEAST OF

LONGVIEW 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 370...WW 371...



DISCUSSION...NUMEROUS VIGOROUS TSTMS HAVE DEVELOPED WITHIN ZONE OF

ENHANCED LOW LEVEL ASCENT LEFT IN THE WAKE OF EARLIER INTENSE MCS

AND BOW ECHO THAT MOVED ACROSS THE DFW AREA AND ESEWD TO PARTS OF

NERN TX. WHILE THE EARLIER SYSTEM HAS MOVED WELL EAST...WIND

PROFILER DATA INDICATED STRONG LOW LEVEL WARM AIR ADVECTION WAS

CONTINUING ATOP RESIDUAL MCS COLD POOL. VERY STRONG INSTABILITY

ACROSS THE REGION WILL LIKELY CONTINUE TO FUEL INTENSE UPDRAFTS

WITHIN A RELATIVELY NARROW CORRIDOR FROM THE DFW METROPLEX ESEWD

NEXT FEW HOURS. WEAK ELY COMPONENT TO LOW LEVEL FLOW...TOPPED BY

INCREASINGLY STRONG WLY FLOW TO ABOUT 40KT BETWEEN 3-5KM WAS

RESULTING IN SUFFICIENT SHEAR FOR SUPERCELLS AND BOWING STRUCTURES

CAPABLE OF PRODUCING DAMAGING WINDS AND LARGE HAIL.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM

MOTION VECTOR 30035.





...CARBIN

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