WW 573 SEVERE TSTM OK TX 122055Z – 130400Z
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 573
NWS STORM PREDICTION CENTER NORMAN OK
355 PM CDT SUN AUG 12 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN OKLAHOMA
NORTH-CENTRAL TEXAS
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 355 PM UNTIL
1100 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 40 MILES WEST
NORTHWEST OF ABILENE TEXAS TO 30 MILES EAST SOUTHEAST OF DURANT
OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
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...TSTMS SHOULD INCREASE IN COVERAGE AND INTENSITY THROUGH
THE EVENING AS A WEAK COLD FRONT DEVELOPS SOUTH INTO A VERY HOT AND
MODERATELY UNSTABLE AIRMASS. LIFT ACROSS THE FRONT MAY BE ENHANCED
AS WEAK HEIGHT FALLS ASSOCIATED WITH A SHORTWAVE TROUGH CROSSING
KS/MO BRUSH THE REGION. VERY HOT AND WELL-MIXED BOUNDARY LAYER
SHOULD PROMOTE STRONG TO DAMAGING DOWNBURST WINDS AND A FEW STORMS
MAY BECOME BETTER ORGANIZED AND PERSIST AS THE FRONT/WIND SHIFT AND
SLIGHTLY STRONGER MID LEVEL FLOW DEVELOP ACROSS THE REGION THROUGH
THE EVENING HOURS.
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 30025.
...CARBIN
via SPC Forecast Products http://www.spc.noaa.gov/products/watch/ww0573.html
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