SEL5
SPC WW 132025
TXZ000-140500-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 135
NWS STORM PREDICTION CENTER NORMAN OK
325 PM CDT FRI APR 13 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTH CENTRAL TEXAS
EFFECTIVE THIS FRIDAY AFTERNOON FROM 325 PM UNTIL MIDNIGHT CDT.
..THIS IS A PARTICULARLY DANGEROUS SITUATION...
DESTRUCTIVE TORNADOES...LARGE HAIL TO 3 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 15 MILES NORTH OF SHERMAN
TEXAS TO 45 MILES WEST SOUTHWEST OF TEMPLE TEXAS. FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU5).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND 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.
OTHER WATCH INFORMATION...CONTINUE...WW 133...WW 134...
DISCUSSION...SUPERCELL THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS
AFTERNOON ALONG SURFACE DRYLINE OVER WESTERN NORTH TX. THESE STORMS
WILL TRACK EAST-NORTHEASTWARD ACROSS THE DFW METRO AREA THIS
EVENING...WHILE OTHER MORE ISOLATED FORM ACROSS THE REGION. VERY
STRONG LOW LEVEL VERTICAL SHEAR PROFILES AND FAVORABLE LOW LEVEL
MOISTURE PARAMETERS SUGGEST THE THREAT OF STRONG TORNADOES ACROSS
THE WATCH AREA.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.
..HART
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