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WWUS20 KWNS 130042

SEL7

SPC WW 130042

TXZ000-130600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 87

NWS STORM PREDICTION CENTER NORMAN OK

745 PM CDT TUE APR 12 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTH CENTRAL TEXAS



* EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 745 PM

  UNTIL 100 AM CDT.



* PRIMARY THREATS INCLUDE...

  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

  ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



SUMMARY...THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER THE SOUTHERN

EDWARDS PLATEAU AND MIDDLE RIO GRANDE VALLEY...WITH STORMS SPREADING

EASTWARD OVERNIGHT THROUGH SOUTH CENTRAL TEXAS.  THE STORM

ENVIRONMENT WILL BE SUPPORTIVE OF OCCASIONAL LARGE HAIL THE NEXT FEW

HOURS WITH EMBEDDED SUPERCELLS...AND EVENTUALLY TRANSITION TO MORE

OF AN ISOLATED DAMAGING WIND RISK AS STORMS GROW INTO CLUSTERS AND

LINE SEGMENTS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 90 MILES WEST OF

HONDO TEXAS TO 70 MILES NORTHEAST OF BEEVILLE TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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.



&&



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 27030.





...THOMPSON

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