Tornado Watch 295

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 295
NWS STORM PREDICTION CENTER NORMAN OK
140 PM CDT SAT MAY 10 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST OKLAHOMA
NORTHEAST TEXAS
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 140 PM UNTIL
900 PM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 85 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 5 MILES WEST SOUTHWEST OF
ARDMORE OKLAHOMA TO 65 MILES EAST NORTHEAST OF PARIS 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 292
...
WW 293
...
WW 294
...
DISCUSSION...DESTABILIZATION AND LIFT ALONG ADVANCING DRYLINE
THROUGH LATE THIS AFTERNOON SHOULD SPUR ISOLD TO SCTD SUPERCELL
DEVELOPMENT ACROSS PARTS OF SERN OK...THE RED RIVER VALLEY...AND
NERN TX. LOW LEVEL SHEAR AND POTENT INSTABILITY ACROSS THE AREA WILL
BE SUPPORTIVE OF LONG-LIVED MESOCYCLONES IN ANY DISCRETE
STORMS/UPDRAFTS THAT DEVELOP. TORNADO THREAT WITH THIS ACTIVITY
SHOULD INCREASE WITH TIME INTO THE EARLY EVENING. IN ADDITION TO
VERY LARGE/DAMAGING HAIL...A STRONG TORNADO CANNOT BE RULED OUT
GIVEN ANTECEDENT CONDITIONS AND MAGNITUDE OF FORCING/SHEAR FORECAST
TO DEVELOP 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 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27030.
...CARBIN