Tuesday, October 26, 2010

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

SPC Tornado Watch 725
Tue, 26 Oct 2010 11:42:03 -0500


WW 0725 Thumbnail Image

  URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 725 NWS STORM PREDICTION CENTER NORMAN OK 1140 AM CDT TUE OCT 26 2010  THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF          NORTHERN AND CENTRAL MISSISSIPPI  EFFECTIVE THIS TUESDAY MORNING AND EVENING FROM 1140 AM UNTIL 700 PM CDT.  TORNADOES...HAIL TO 1.5 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 65 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHWEST OF TUPELO MISSISSIPPI TO 10 MILES SOUTH SOUTHEAST OF JACKSON MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).  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.  OTHER WATCH INFORMATION...CONTINUE...WW 721...WW 722...WW 723...WW 724...  DISCUSSION...CLEARING IN THE WAKE OF GRAVITY WAVE AND AHEAD OF COLD FRONT HAS ALLOWED TEMPERATURES TO WARM INTO THE LOW/MID 80S.  AND WHILE MIDLEVEL LAPSE RATES ARE EXPECTED TO REMAIN POOR...THE BOUNDARY LAYER WARMING COUPLED WITH DEW POINTS IN THE UPPER 60S TO AROUND 70 F ARE EXPECTED TO YIELD A MODERATELY UNSTABLE ENVIRONMENT THIS AFTERNOON WITH MLCAPE INCREASING TO 1000-2000 J/KG.  WHEN COUPLED WITH RELATIVELY STRONG LOW AND DEEP-LAYER SHEAR...SETUP WILL FAVOR THE DEVELOPMENT OF SUPERCELLS CAPABLE OF A FEW TORNADOES IN ADDITION TO LOCALLY DAMAGING WIND GUSTS.  AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24035.   ...MEAD  
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SPC Tornado Watch 725 Status Reports
Tue, 26 Oct 2010 11:41:11 -0500


WW 0725 Thumbnail Image

  STATUS FOR WATCH 0725 HAS NOT BEEN ISSUED YET 
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