

020 

WWUS20 KWNS 192321

SEL7

SPC WW 192321

TXZ000-200600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 87

NWS STORM PREDICTION CENTER NORMAN OK

625 PM CDT MON MAR 19 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTH CENTRAL TEXAS



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 625 PM UNTIL

100 AM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE

MILES EAST AND WEST OF A LINE FROM 25 MILES WEST SOUTHWEST OF

LAREDO TEXAS TO 25 MILES NORTHEAST OF AUSTIN TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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...CONTINUE...WW 85...WW 86...



DISCUSSION...SEVERAL DISCRETE SUPERCELLS HAVE FORMED TO THE WEST AND

SOUTHWEST OF SAN ANTONIO...AND APPEAR LIKELY TO MAINTAIN INTENSITY

THROUGH MUCH OF THE EVENING.  A MOIST AND VERY UNSTABLE AIR

MASS...COUPLED WITH STRONG LOW LEVEL AND DEEP LAYER SHEAR...WILL

PROMOTE THE RISK OF TORNADIC SUPERCELLS ALSO CAPABLE OF DAMAGING

WINDS AND VERY LARGE HAIL.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 24030.





...HART

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