WATCHES: Severe Thunderstorm Watch Number 662

WWUS20 KWNS 131839
SEL2
SPC WW 131839
TXZ000-140200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 662
NWS STORM PREDICTION CENTER NORMAN OK
135 PM CDT SAT OCT 13 2012

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

CONCHO VALLEY/EDWARDS PLATEAU OF TEXAS

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 135 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 EAST AND WEST OF A LINE FROM 50 MILES NORTH
NORTHEAST OF SAN ANGELO TEXAS TO 55 MILES SOUTH SOUTHWEST OF DEL
RIO TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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 661...

DISCUSSION...ISOLATED TO SCATTERED TSTMS EXPECTED TO FORM ALONG SRN
EXTENSION OF COLD FRONT IN WRN TX AND ACROSS THE MOUNTAINS OF
COAHUILA. STRONG SURFACE HEATING AHEAD OF THE FRONT IN CONJUNCTION
WITH MODERATE DEEP-LAYER SHEAR WILL FAVOR A FEW SUPERCELLS WITH
PRIMARY RISKS OF LARGE HAIL AND SEVERE 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 550. MEAN STORM
MOTION VECTOR 26025.


...GRAMS/THOMPSON

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