WATCHES: Severe Thunderstorm Watch Number 52

WWUS20 KWNS 192247
SEL2
SPC WW 192247
TXZ000-200400-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 52
NWS STORM PREDICTION CENTER NORMAN OK
545 PM CDT SAT MAR 19 2011

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

PARTS OF THE TEXAS PANHANDLE AND WEST TEXAS

EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 545 PM UNTIL
1100 PM CDT.

HAIL TO 2.5 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 60
STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES WEST
NORTHWEST OF CHILDRESS TEXAS TO 80 MILES SOUTH OF LUBBOCK 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.

DISCUSSION...THUNDERSTORMS ARE DEVELOPING ALONG SURFACE CONVERGENCE
ZONE WITHIN A SLY FLOW OF MDTLY UNSTABLE AIR. MLCAPES LOCALLY TO
1500 J/KG COMBINED WITH STEEP LAPSE RATES AND 40-50KT OF BULK SHEAR
DO SUPPORT POTENTIAL FOR SUPERCELLS. EXPECT STORMS TO INTENSITY AND
MOVE EWD ACROSS THE WATCH WITH LARGE HAIL THE PRIMARY THREAT.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 22025.

...HALES

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