SPC Severe Thunderstorm Watch 667
Wed, 15 Sep 2010 20:40:02 -0500
URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 667 NWS STORM PREDICTION CENTER NORMAN OK 840 PM CDT WED SEP 15 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EXTREME NORTHWEST ARKANSAS EXTREME SOUTHEAST KANSAS SOUTHWEST MISSOURI NORTHEAST OKLAHOMA EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 840 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 60 STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH NORTHEAST OF JOPLIN MISSOURI TO 40 MILES EAST OF TULSA OKLAHOMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7). 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 665...WW 666... DISCUSSION...MERGING SUPERCELLS IN SE KS SHOULD LEAD TO MORE LINEAR MCS FORMATION OVER THE NEXT FEW HOURS. THE CONVECTION IS EXPECTED TO MOVE ESEWD/SEWD ALONG A REMNANT OUTFLOW BOUNDARY NEAR THE OK/MO BORDER...WITH RESIDUAL MODERATE INSTABILITY AND DEEP-LAYER VERTICAL SHEAR SUPPORTING ORGANIZED BOWING SEGMENTS AND EMBEDDED SUPERCELL STRUCTURES. DAMAGING WINDS AND LARGE HAIL WILL BE THE MAIN THREATS...PRIOR TO THE STORMS WEAKENING LATE TONIGHT AS THEY ENCOUNTER A STRENGTHENING CAP AND WEAKER INSTABILITY. 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 30025. ...THOMPSONRead more
SPC Severe Thunderstorm Watch 667 Status Reports
Wed, 15 Sep 2010 20:40:10 -0500
STATUS FOR WATCH 0667 HAS NOT BEEN ISSUED YETRead more
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