SEL7
SPC WW 061655
TXZ000-062300-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 757
NWS STORM PREDICTION CENTER NORMAN OK
1155 AM CDT TUE OCT 6 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND NORTH CENTRAL TEXAS
EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1155 AM UNTIL 600
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 50
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES NORTH
NORTHWEST OF SAN ANGELO TEXAS TO 15 MILES SOUTH SOUTHEAST OF
PARIS 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 756...
DISCUSSION...ELEVATED TSTM DEVELOPMENT /INCLUDING A SUPERCELL OR
TWO/ WILL CONTINUE WITHIN FEED OF MODERATE MUCAPE BEHIND SHALLOW
SURFACE COLD FRONT SAGGING SSEWD INTO CENTRAL TX THIS AFTERNOON.
GIVEN EFFECTIVE SHEAR AROUND 40-50 KT AND MODEST LAPSE
RATES...POTENTIAL FOR ISOLATED LARGE HAIL AND PERHAPS A
STRONG/SEVERE WIND REPORT REMAINS WITH THE STRONGER CORES.
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 25020.
...EVANS
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