SPC Tornado Watch 648
Wed, 08 Sep 2010 17:44:02 -0500
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 648 NWS STORM PREDICTION CENTER NORMAN OK 540 PM CDT WED SEP 8 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHWEST ARKANSAS SOUTHERN AND EASTERN OKLAHOMA CENTRAL AND NORTHERN TEXAS EFFECTIVE THIS WEDNESDAY AFTERNOON AND THURSDAY MORNING FROM 540 PM UNTIL 100 AM CDT. TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES NORTHEAST OF MCALESTER OKLAHOMA TO 25 MILES SOUTH SOUTHEAST OF CORSICANA TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8). 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. DISCUSSION...SEVERAL SMALLER SCALE AREAS WITHIN LARGER SCALE REMNANT CIRCULATION OF "HERMINE" APPEAR TO HAVE THE POTENTIAL FOR MAINLY BRIEF TORNADOES THIS EVE: (1) ALONG LOW LVL CONFLUENCE AXIS IN ZONE OF GREATEST LOW LVL THETA-E ALONG AND E OF I-35 IN N TX...(2) ALONG BAND OF STORMS EMBEDDED IN WARM/MOISTURE-RICH AIR IN NE TX; OUTFLOW-DOMINANT STORM LINE MOVING NWD FROM SHV AREA MAY COMPROMISE PROBABILITIES FOR LOW LVL STORM ROTATION INITIALLY...BUT AREA WILL HAVE BENEFIT OF LOW LVL JET SHIFTING NNE INTO SE OK LATER THIS EVE...(3) AREA ALONG W-E WARM FRONT IN SW AR...WHERE DEEP SHEAR IS WEAKER BUT ENHANCED LOW LVL DIRECTIONAL SHEAR EXISTS...AND (4) AREA OF COMPARATIVELY LOWER THETA-E AIR NEAR LOW LVL MAIN CIRCULATION CENTER IN NW TX/SW OK; ANY THREAT THAT DOES DEVELOP IN THIS REGION SHOULD TO SHIFT ENE FROM TOWARD ADA LATER THIS EVE. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 21030. ...CORFIDIRead more
SPC Tornado Watch 648 Status Reports
Wed, 08 Sep 2010 17:44:11 -0500
STATUS FOR WATCH 0648 HAS NOT BEEN ISSUED YETRead more
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