WATCHES: Severe Thunderstorm Watch Number 277

WWUS20 KWNS 141932
SEL7
SPC WW 141932
TXZ000-150200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 277
NWS STORM PREDICTION CENTER NORMAN OK
235 PM CDT MON MAY 14 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

SOUTHWEST TEXAS

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 235 PM UNTIL 900
PM CDT.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST
NORTHWEST OF MARFA TEXAS TO 30 MILES EAST OF DRYDEN TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).

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.

DISCUSSION...SCATTERED THUNDERSTORMS ARE FORMING OVER SOUTHWEST
TX...AHEAD OF AN APPROACHING UPPER TROUGH. SUFFICIENT VERTICAL
SHEAR IN THIS REGION WILL PROMOTE SUPERCELL STRUCTURES CAPABLE OF
LARGE HAIL AND DAMAGING WINDS. STORMS MAY ORGANIZE INTO BOWING
SEGMENTS THROUGH THE LATE AFTERNOON AND EVENING WITH AN ENHANCED
RISK OF DAMAGING WINDS.

AVIATION...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 500. MEAN STORM
MOTION VECTOR 31030.


...HART

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