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036 

WWUS20 KWNS 092157

SEL6

SPC WW 092157

TXZ000-CWZ000-100400-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 136

NWS STORM PREDICTION CENTER NORMAN OK

500 PM CDT FRI MAY 9 2014



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTH TEXAS

  COASTAL WATERS



* EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 500 PM UNTIL

  1100 PM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES WEST

SOUTHWEST OF LAREDO TEXAS TO 65 MILES SOUTH SOUTHEAST OF CORPUS

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

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 135...



DISCUSSION...THUNDERSTORM CLUSTERS ARE EXPECTED TO SPREAD ESEWD

ACROSS S TX THROUGH LATE EVENING AS A RESULT OF MULTIPLE

STORM/OUTFLOW MERGERS...IN ADVANCE OF A SHORTWAVE TROUGH OVER NE

MEXICO.  STRONG INSTABILITY IS PRESENT OVER S TX WITH SUFFICIENT

DEEP-LAYER VERTICAL SHEAR FOR ORGANIZED CLUSTERS/SUPERCELLS AND AN

ATTENDANT RISK FOR LARGE HAIL/DAMAGING WINDS.



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 29020.





...THOMPSON

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