

346 

WWUS20 KWNS 110054

SEL3

SPC WW 110054

TXZ000-CWZ000-110800-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 273

NWS STORM PREDICTION CENTER NORMAN OK

750 PM CDT THU MAY 10 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH-CENTRAL AND DEEP SOUTH TEXAS

       COASTAL WATERS



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 750 PM

UNTIL 300 AM CDT.



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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF COLLEGE

STATION TEXAS TO 75 MILES SOUTH SOUTHWEST 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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 271...SEVERE THUNDERSTORM WATCH NUMBER 272. WATCH

NUMBER 271 272 WILL NOT BE IN EFFECT AFTER 750 PM CDT.



DISCUSSION...SEVERE STORM AND TORNADO THREAT WILL PERSIST ACROSS

PORTIONS OF SRN AND SCNTRL TX TONIGHT AS UPPER LOW DEVELOPS EAST

FROM WEST TX AND BELT OF STRONGER MID LEVEL WLY FLOW SPREADS ACROSS

WARM AND UNSTABLE AIRMASS. GREATEST SHORT-TERM THREAT WILL BE ALONG

A OUTFLOW REINFORCED WARM FRONT FROM WEBB COUNTY EAST TO CRP/VCT

AREA. ANOTHER LINEAR BAND OF STORMS WITH LEWP/BOW STRUCTURES WILL

MOVE EAST INTO MARGINALLY UNSTABLE BUT STRONGLY SHEARED REGIME ALONG

I35 CORRIDOR FROM SAN ANTONIO NORTH TO BELL/MILAM COUNTIES. IN

ADDITION TO TORNADO POTENTIAL WITH SOME OF THESE STORMS...LARGE HAIL

AND EXTREME RAINFALL WILL ALSO BE LIKELY. EVOLVING COLD POOLS AND

PERSISTENT ASCENT WITH THE EWD PROGRESSION OF THE UPPER SYSTEM

SHOULD SUPPORT/MAINTAIN MCS AND DAMAGING WIND POTENTIAL WELL INTO

THE NIGHT PERHAPS AS FAR EAST AS WHARTON COUNTY AND AS FAR SOUTH AS

KENEDY COUNTY.



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

600. MEAN STORM MOTION VECTOR 24030.





...CARBIN

