Wow, yet another Severe Thunderstorm Watch was issued, this one includes Denton county, does not include Collin county. This appears to be related to the dissipating outflow boundary that is still moving south across the region. Storms are kicking off along this boundary and there is still some severe potential left for the area. This watch expires at 3am CDT.
URGENT – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 214
NWS STORM PREDICTION CENTER NORMAN OK
930 PM CDT WED APR 29 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 930 PM
UNTIL 300 AM 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 80
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES SOUTHWEST
OF ALTUS OKLAHOMA TO 60 MILES NORTH NORTHEAST OF FORT WORTH
TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).
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…CLUSTERS OF THUNDERSTORMS ARE RE-DEVELOPING ACROSS
WESTERN NORTH TX AND SOUTHWEST OK…IN REGION OF STRONG LOW LEVEL
WARM ADVECTION AND AMPLE MOISTURE/INSTABILITY. THESE STORMS WILL
LIKELY PERSIST FOR SEVERAL HOURS AND PROPAGATE SOUTHEASTWARD DOWN
THE RED RIVER VALLEY.
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 450. MEAN STORM
MOTION VECTOR 29025.