Sunday, March 31, 2013

WATCHES: Severe Thunderstorm Watch Number 77

WWUS20 KWNS 010205
SEL7
SPC WW 010205
TXZ000-010600-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 77
NWS STORM PREDICTION CENTER NORMAN OK
905 PM CDT SUN MAR 31 2013

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

DEEP SOUTH TEXAS

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 905 PM UNTIL
100 AM CDT.

HAIL TO 3 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 50
STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES EAST NORTHEAST
OF ALICE TEXAS TO 105 MILES SOUTH OF ALICE 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.

OTHER WATCH INFORMATION...CONTINUE...WW 73...WW 76...

DISCUSSION...AN INTENSE SUPERCELL WITH A HISTORY OF PRODUCING
BASEBALL TO SOFTBALL-SIZED HAIL WILL LIKELY PERSIST FOR ANOTHER FEW
HOURS WITH A CONTINUED RISK FOR POTENTIALLY VERY LARGE HAIL AND
LOCALLY DAMAGING WINDS. WITH TIME...STEADILY GROWING CONVECTIVE
INHIBITION SHOULD RESULT IN A GRADUAL WEAKENING OF THE STORM.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 33025.


...MEAD

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