Compact News: NOAA's National Weather Service SPC Tornado/Severe Thunderstorm Watches Update

Friday, October 22, 2010

NOAA's National Weather Service SPC Tornado/Severe Thunderstorm Watches Update

SPC Tornado Watch 702
Fri, 22 Oct 2010 14:47:03 -0500

URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 702 NWS STORM PREDICTION CENTER NORMAN OK 245 PM CDT FRI OCT 22 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF SOUTHWEST AND SOUTH-CENTRAL OKLAHOMA NORTHWEST TEXAS EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 245 PM UNTIL 1000 PM CDT. TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 130 MILES WEST SOUTHWEST OF WICHITA FALLS TEXAS TO 75 MILES EAST OF WICHITA FALLS TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2). 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...TSTMS DEVELOPING INVOF DRYLINE/OUTFLOW BOUNDARY TRIPLE POINT ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY THIS AFTERNOON WITHIN A MODERATELY UNSTABLE AIR MASS WITH MLCAPE OF 1000-1500 J/KG. SOME BOUNDARY LAYER DRYING HAS BEEN NOTED IN OPEN WARM SECTOR WHERE DEWPOINTS HAVE MIXED IN THE UPPER 50S. HOWEVER...LOCAL ENVIRONMENT INVOF OUTFLOW BOUNDARY IS LIKELY CHARACTERIZED BY COOLER AND MORE MOIST CONDITIONS...YIELDING LOWER LCL HEIGHTS. WHEN COUPLED WITH LOCALLY BACKED NEAR-SURFACE FLOW AND 40-50 KT OF DEEP-LAYER SHEAR...SETUP APPEARS FAVORABLE FOR THE DEVELOPMENT OF A FEW SUPERCELLS CAPABLE OF LARGE HAIL AND A COUPLE TORNADOES. AVIATION...TORNADOES AND 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 24030. ...MEAD

SPC Tornado Watch 702 Status Reports
Fri, 22 Oct 2010 14:47:14 -0500

  STATUS FOR WATCH 0702 HAS NOT BEEN ISSUED YET

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