Tuesday, March 8, 2011

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

SPC Tornado Watch 43
Tue, 08 Mar 2011 18:00:02 -0600


WW 0043 Thumbnail Image

  URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 43 NWS STORM PREDICTION CENTER NORMAN OK 135 PM CST TUE MAR 8 2011  THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF          PARTS OF SOUTHWEST ARKANSAS        SOUTHEAST OKLAHOMA        PARTS OF NORTH CENTRAL AND NORTHEAST TEXAS  EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 135 PM UNTIL 800 PM CST.  TORNADOES...HAIL TO 2.5 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 60 STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH NORTHEAST OF MCALESTER OKLAHOMA TO 85 MILES SOUTH OF PARIS TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).  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 42...  DISCUSSION...AIR MASS ALONG AND E OF N/S DRY LINE HAS DESTABILIZED  WITH MLCAPES AOA 1500 J/KG WITH FAVORABLE SHEAR PROFILES IN PLACE FOR SUPERCELLS.  THUNDERSTORMS ARE DEVELOPING ALONG DRY LINE AND WILL INCREASE IN NUMBER AND INTENSITY THRU THE AFTERNOON AS THEY MOVE EWD.  WHILE LARGE HAIL IS LIKELY WITH ANY SUPERCELL...A TORNADO THREAT IS ALSO EXPECTED GIVEN THE STRONG MID/UPPER SHEAR ACROSS THE AREA AHEAD OF UPPER TROUGH.  AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 24030.   ...HALES  
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SPC Tornado Watch 42
Tue, 08 Mar 2011 18:00:05 -0600


WW 0042 Thumbnail Image

  URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 42 NWS STORM PREDICTION CENTER NORMAN OK 110 PM CST TUE MAR 8 2011  THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF          LARGE PART OF CENTRAL AND SOUTHERN LOUISIANA        LARGE PART OF SOUTHERN MISSISSIPPI        COASTAL WATERS  EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 110 PM UNTIL 800 PM CST.  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 85 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES WEST SOUTHWEST OF FORT POLK LOUISIANA TO 10 MILES EAST OF PINE BELT MISSISSIPPI.  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...VERY MOIST/UNSTABLE AIR MASS SPREADING INLAND LWR MS VALLEY WHERE SHEAR PROFILES ALREADY FAVORABLE FOR SUPERCELLS.  EXPECT THUNDERSTORMS TO DEVELOP AND INTENSIFY THRU THE AFTERNOON AS UPPER TROUGH AND STRONG JET APPROACH THE REGION.  SUPERCELLS INCLUDING TORNADOES ARE LIKELY WITH THE POTENTIAL FOR A STRONG TORNADO BY LATER THIS AFTERNOON AND EVENING.  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 22035.   ...HALES  
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SPC Tornado Watch 43 Status Reports
Tue, 08 Mar 2011 18:00:04 -0600


WW 0043 Thumbnail Image

  STATUS REPORT ON WW 43  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 E DAL TO 25 N PRX TO 15 W FSM.  ..ROGERS..03/08/11  ATTN...WFO...SHV...OUN...TSA...FWD...   STATUS REPORT FOR WT 43   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   ARC081-091-133-090040-  AR  .    ARKANSAS COUNTIES INCLUDED ARE  LITTLE RIVER         MILLER              SEVIER                 OKC079-089-090040-  OK  .    OKLAHOMA COUNTIES INCLUDED ARE  LE FLORE             MCCURTAIN              TXC037-063-067-085-119-159-183-203-223-231-257-277-315-343-379- 387-397-423-449-459-467-499-090040-  TX  .    TEXAS COUNTIES INCLUDED ARE  BOWIE                CAMP                CASS                 COLLIN               DELTA               FRANKLIN             GREGG                HARRISON            HOPKINS              
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SPC Tornado Watch 42 Status Reports
Tue, 08 Mar 2011 18:00:08 -0600


WW 0042 Thumbnail Image

  STATUS REPORT ON WW 42  THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.  ..ROGERS..03/08/11  ATTN...WFO...LCH...LIX...SHV...JAN...   STATUS REPORT FOR WT 42   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   LAC001-003-005-009-011-019-021-023-025-029-033-037-039-041-043- 045-047-053-055-059-063-065-069-077-079-085-091-097-099-101-103- 105-107-113-115-117-121-125-127-090040-  LA  .    LOUISIANA PARISHES INCLUDED ARE  ACADIA               ALLEN               ASCENSION            AVOYELLES            BEAUREGARD          CALCASIEU            CALDWELL             CAMERON             CATAHOULA            CONCORDIA            EAST BATON ROUGE    EAST FELICIANA       EVANGELINE           FRANKLIN            GRANT                IBERIA               IBERVILLE           JEFFERSON DAVIS      LAFAYETTE            LA SALLE            LIVINGSTON           MADISON              NATCHITOCHES        POINTE COUPEE        RAPIDES              SABINE              ST. HELENA           ST. LANDRY           ST. MARTIN          ST. MARY             ST. TAMMANY          TANGIPAHOA          TENSAS               VERMILION            VERNON              WASHINGTON           WEST BATON ROUGE     WEST FELICIANA      WINN                   MSC001-005-021-029-031-035-037-045-049-061-063-065-067-073-077- 085-091-101-109-113-121-123-127-129-147-149-157-090040-  MS  
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