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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 151

NWS STORM PREDICTION CENTER NORMAN OK

335 PM CDT THU MAY 9 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  WESTERN LOUISIANA

  SOUTHEAST TEXAS

  COASTAL WATERS



* EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 335 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  NUMEROUS DAMAGING WIND GUSTS LIKELY WITH A FEW SIGNIFICANT GUSTS

    TO 75 MPH POSSIBLE

  SEVERAL LARGE HAIL EVENTS WITH A FEW VERY LARGE HAIL EVENTS TO 2

    INCHES IN DIAMETER POSSIBLE

  A FEW TORNADOES POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 95

STATUTE MILES EAST AND WEST OF A LINE FROM 10 MILES NORTHEAST OF

TYLER TEXAS TO 30 MILES SOUTH SOUTHWEST OF PORT ARTHUR TEXAS.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU1).



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 150...



DISCUSSION...E CNTRL TX MCS WITH EMBEDDED BOWING SEGMENTS/SUSTAINED

STORMS EXPECTED TO MOVE MAINLY ESE THROUGH LATE EVE. SYSTEM WILL BE

MAINTAINED BY PERSISTENT...MOIST SSELY 0-1 KM FLOW BENEATH 35-40 KT

SW FLOW AHEAD OF S CNTRL TX UPR IMPULSE. SYSTEM MAY SOMEWHAT

ACCELERATE WITH EWD EXTENT...AND BE AUGMENTED BY ADDITIONAL STORM

DEVELOPMENT ON BOTH ITS N AND S ENDS. POTENTIAL WILL EXIST FOR DMGG

WIND...SVR HAIL...AND POSSIBLY A BRIEF TORNADO OR TWO.



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

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 28035.





...CORFIDI

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