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

Tuesday, February 1, 2011

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

SPC Tornado Watch 9
Tue, 01 Feb 2011 08:41:03 -0600

URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 9 NWS STORM PREDICTION CENTER NORMAN OK 840 AM CST TUE FEB 1 2011 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF MUCH OF LOUISIANA WEST CENTRAL AND SOUTHWEST MISSISSIPPI COASTAL WATERS EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 840 AM UNTIL 300 PM CST. 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 100 STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH OF NATCHEZ MISSISSIPPI TO 45 MILES SOUTH OF INTRACOASTAL CITY LOUISIANA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9). 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...A STRONGLY FORCED SQUALL LINE MOVE QUICKLY EWD IN CONJUNCTION WITH A SURFACE COLD FRONT PROGRESSING EWD FROM TX INTO LA...AND STRONG MIDLEVEL TROUGH EJECTING ENEWD OVER TX/OK. GRADUAL SURFACE MOISTENING/DESTABILIZATION WILL SUPPORT CONVECTION BASED NEAR THE SURFACE AS DEWPOINTS INCREASE INTO THE 60S...WHILE VERTICAL SHEAR WILL BE VERY STRONG AND SUPPORTIVE OF EMBEDDED BOW/SUPERCELL STRUCTURES IN THE LINE. A FEW TORNADOES AND DAMAGING WINDS WILL BE THE MAIN THREATS INTO THE AFTERNOON. 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 24045. ...THOMPSON

SPC Tornado Watch 9 Status Reports
Tue, 01 Feb 2011 08:41:11 -0600

  STATUS REPORT ON WW 4  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SSE ALI TO 5 SE CRP TO 30 E NIR TO 20 SSW VCT.  ..JEWELL..01/09/11  ATTN...WFO...CRP...   STATUS REPORT FOR WS 4   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   TXC007-057-273-355-391-409-091140-  TX  .    TEXAS COUNTIES INCLUDED ARE  ARANSAS              CALHOUN             KLEBERG              NUECES               REFUGIO             SAN PATRICIO           GMZ230-235-250-255-091140-  CW   .    ADJACENT COASTAL WATERS INCLUDED ARE  BAYS AND WATERWAYS FROM BAFFIN BAY TO PORT ARANSAS   BAYS AND WATERWAYS FROM PORT ARANSAS TO PORT O CONNOR   COASTAL WATERS FROM BAFFIN BAY TO PORT ARANSAS OUT 20 NM   COASTAL WATERS FROM PORT ARANSAS TO MATAGORDA SHIP CHANNEL OUT 20 NM   THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE

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