A Severe Thunderstorm Watch has been issued for the entire DFW Metroplex including Frisco until 11pm. Looks like the timing on this storm system has been pushed forward a bit and I am thinking of an ETA around maybe 10pm approximately? Watch details below…
URGENT – IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 743
NWS STORM PREDICTION CENTER NORMAN OK
430 PM CDT MON SEP 21 2009THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OFNORTH CENTRAL TEXAS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 430 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 90
STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF
DALLAS TEXAS TO 30 MILES SOUTHWEST OF STEPHENVILLE TEXAS. 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.OTHER WATCH INFORMATION…CONTINUE…WW 742…
DISCUSSION…THUNDERSTORMS ARE DEVELOPING ALONG THE DRYLINE FROM
JUST E OF SPS TO E OF ABI. STRONG INSTABILITY AND EFFECTIVE BULK
SHEAR AROUND 30 KT WILL SUPPORT A FEW PERSISTENT MULTICELL
CLUSTERS…AS WELL AS STORMS WITH SOME SUPERCELL STRUCTURES. LARGE
HAIL AND DAMAGING WINDS WILL BE THE MAIN THREATS. LATER THIS
EVENING…STORM INTERACTIONS COULD LEAD TO UPSCALE GROWTH INTO MORE
OF A LINEAR MCS…WITH A CONTINUING THREAT FOR DAMAGING WINDS AND
LARGE HAIL.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 27025.
