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000 

WWUS20 KWNS 061808

SEL3

SPC WW 061808

TXZ000-CWZ000-070000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 103

NWS STORM PREDICTION CENTER NORMAN OK

1210 PM CST THU MAR 6 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       PARTS OF SOUTH AND SOUTHEAST TEXAS

       COASTAL WATERS



EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1210 PM UNTIL

600 PM CST.



TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 10 MILES EAST OF HOUSTON

TEXAS TO 40 MILES WEST NORTHWEST OF ALICE TEXAS.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU3).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



DISCUSSION...THUNDERSTORMS ARE INCREASING IN NUMBER AN INTENSITY AS

UPPER TROUGH APPROACHES SRN TX.  AIRMASS IS MDTLY UNSTABLE WITH

FAVORABLE VEERING SHEAR PROFILES FOR SUPERCELLS.  IN ADDITION TO

LARGE HAIL...TORNADOES WILL BE POSSIBLE WITH ANY SUPERCELL.



AVIATION...TORNADOES AND 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

450. MEAN STORM MOTION VECTOR 24025.





...HALES

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