SPC Severe Thunderstorm Watch 666
Wed, 15 Sep 2010 17:58:03 -0500
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 666 NWS STORM PREDICTION CENTER NORMAN OK 555 PM CDT WED SEP 15 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF NORTHWEST AND NORTHERN OKLAHOMA EFFECTIVE THIS WEDNESDAY AFTERNOON FROM 555 PM UNTIL MIDNIGHT CDT. HAIL TO 2.5 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 85 STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHEAST OF PONCA CITY OKLAHOMA TO 40 MILES SOUTH SOUTHWEST OF ENID OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6). 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 664...WW 665... DISCUSSION...THUNDERSTORM DEVELOPMENT IS UNDERWAY ALONG A PRONOUNCED SURFACE TROUGH/DRYLINE ACROSS NW OK. A FEW SUSTAINED STORMS WITH SUPERCELL CHARACTERISTICS ARE PROBABLE IN THE NEXT COUPLE OF HOURS GIVEN THE STRONG ASCENT ON THE BOUNDARY...AND A STORM ENVIRONMENT WITH EFFECTIVE BULK SHEAR OF 35-45 KT AND MLCAPE IN EXCESS OF 2000 J/KG. OTHER SEVERE STORMS NEAR ICT WILL ALSO CONTINUE TO MOVE SEWD TOWARD THE OK BORDER...POTENTIALLY REACHING THE OSAGE COUNTY AREA AROUND 01Z. LARGE HAIL AND DAMAGING WINDS WILL BE THE PRIMARY SEVERE STORM THREATS UNTIL LATE EVENING WHEN THE BOUNDARY LAYER COOLS AND THE CAP STRENGTHENS. AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM MOTION VECTOR 30020. ...THOMPSONRead more
SPC Severe Thunderstorm Watch 666 Status Reports
Wed, 15 Sep 2010 17:58:11 -0500
STATUS FOR WATCH 0666 HAS NOT BEEN ISSUED YETRead more
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