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

Monday, February 28, 2011

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

SPC Tornado Watch 31
Mon, 28 Feb 2011 06:02:02 -0600

URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 31 NWS STORM PREDICTION CENTER NORMAN OK 700 AM EST MON FEB 28 2011 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF NORTHERN ALABAMA FAR EASTERN ARKANSAS NORTHERN MISSISSIPPI MIDDLE AND EASTERN TENNESSEE FAR WESTERN VIRGINIA EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 700 AM UNTIL 200 PM EST. 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 115 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHWEST OF CROSSVILLE TENNESSEE TO 15 MILES SOUTHEAST OF GREENWOOD MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). 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 28...WW 29...WW 30... DISCUSSION...COMPLEX STORM EVOLUTION IS ONGOING IN ADVANCE OF POTENT MIDLEVEL TROUGH AND ASSOCIATED 80-100 KT MIDLEVEL JET STREAK MOVING THROUGH THE OZARK PLATEAU. AMBIENT AIR MASS IS WARM AND RATHER MOIST WITH MLCAPE VALUES OF 500-1000 J/KG AND LITTLE OR NO CONVECTIVE INHIBITION. AREA VWPS CONTINUE TO SHOW VERY STRONG LOW AND DEEP-LAYER SHEAR IN PLACE ACROSS REGION WITH 0-1 KM SRH VALUES OF 300-500 M2/S2. AS SUCH...THE POTENTIAL WILL EXIST FOR EMBEDDED SUPERCELL AND/OR BOWING STRUCTURES WITH A RISK FOR TORNADOES /POSSIBLY STRONG/ AND DAMAGING WINDS. 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 500. MEAN STORM MOTION VECTOR 25040. ...MEAD

SPC Tornado Watch 31 Status Reports
Mon, 28 Feb 2011 06:02:11 -0600

  STATUS FOR WATCH 0031 HAS NOT BEEN ISSUED YET

SPC Tornado Watch 30 Status Reports
Mon, 28 Feb 2011 04:50:10 -0600

  STATUS FOR WATCH 0030 HAS NOT BEEN ISSUED YET

SPC Tornado Watch 29 Status Reports
Mon, 28 Feb 2011 05:36:03 -0600

  STATUS REPORT ON WW 29  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 ENE LIT TO 25 WNW HOP TO 40 SE LUK.  ..HURLBUT..02/28/11  ATTN...WFO...MEG...LMK...PAH...OHX...   STATUS REPORT FOR WT 29   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   ARC035-123-281240-  AR  .    ARKANSAS COUNTIES INCLUDED ARE  CRITTENDEN           ST. FRANCIS            KYC001-003-005-009-017-021-035-045-047-049-053-057-061-067-073- 079-087-097-099-113-123-137-141-151-155-167-169-171-179-181-207- 209-213-217-219-227-229-239-281240-  KY  .    KENTUCKY COUNTIES INCLUDED ARE  ADAIR                ALLEN               ANDERSON             BARREN               BOURBON             BOYLE                CALLOWAY             CASEY               CHRISTIAN            CLARK                CLINTON             CUMBERLAND           EDMONSON             FAYETTE             FRANKLIN             GARRARD              GREEN               HARRISON             HART                 JESSAMINE           LARUE                LINCOLN              LOGAN               MADISON              MARION               MERCER              METCALFE             MONROE               NELSON              NICHOLAS

SPC Tornado Watch 28 Status Reports
Mon, 28 Feb 2011 05:31:04 -0600

  STATUS REPORT ON WW 28  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNE LEX TO 30 S CAK.  ..HURLBUT..02/28/11  ATTN...WFO...ILN...RLX...PBZ...CLE...   STATUS REPORT FOR WT 28   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   KYC135-161-201-281240-  KY  .    KENTUCKY COUNTIES INCLUDED ARE  LEWIS                MASON               ROBERTSON              OHC001-015-045-071-073-131-141-145-281240-  OH  .    OHIO COUNTIES INCLUDED ARE  ADAMS                BROWN               FAIRFIELD            HIGHLAND             HOCKING             PIKE                 ROSS                 SCIOTO                 THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.

SPC Tornado Watch 27 Status Reports
Mon, 28 Feb 2011 03:31:04 -0600

  STATUS REPORT ON WW 27  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NW SDF TO 45 SSE MIE.  ..HURLBUT..02/28/11  ATTN...WFO...ILX...IND...PAH...   STATUS REPORT FOR WT 27   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   INC031-079-281040-  IN  .    INDIANA COUNTIES INCLUDED ARE  DECATUR              JENNINGS               THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.

SPC Tornado Watch 26 Status Reports
Mon, 28 Feb 2011 03:30:04 -0600

  STATUS REPORT ON WW 26  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 E TXK TO 20 W LIT TO 20 ESE FLP TO 20 SE UNO.  ..HURLBUT..02/28/11  ATTN...WFO...LZK...TSA...SHV...OUN...FWD...   STATUS REPORT FOR WT 26   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   ARC023-039-045-053-063-067-103-119-125-135-137-145-147-281040-  AR  .    ARKANSAS COUNTIES INCLUDED ARE  CLEBURNE             DALLAS              FAULKNER             GRANT                INDEPENDENCE        JACKSON              OUACHITA             PULASKI             SALINE               SHARP                STONE               WHITE                WOODRUFF                THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.

SPC Tornado Watch 25 Status Reports
Mon, 28 Feb 2011 03:28:04 -0600

  STATUS REPORT ON WW 25  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SE POF TO 20 WSW EVV.  WW 25 WILL BE ALLOWED TO EXPIRE AT 281000Z.  ..HURLBUT..02/28/11  ATTN...WFO...PAH...LSX...   STATUS REPORT FOR WT 25   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   ILC003-069-127-151-153-281000-  IL  .    ILLINOIS COUNTIES INCLUDED ARE  ALEXANDER            HARDIN              MASSAC               POPE                 PULASKI                MOC201-207-281000-  MO  .    MISSOURI COUNTIES INCLUDED ARE  SCOTT                STODDARD               THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.

SPC Tornado Watch 24 Status Reports
Mon, 28 Feb 2011 01:32:04 -0600

  STATUS REPORT ON WW 24  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW FYV TO 40 SW TBN TO 25 W FAM.  ..HURLBUT..02/28/11  ATTN...WFO...SGF...   STATUS REPORT FOR WT 24   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   MOC043-065-067-091-149-153-203-209-213-215-225-229-280840-  MO  .    MISSOURI COUNTIES INCLUDED ARE  CHRISTIAN            DENT                DOUGLAS              HOWELL               OREGON              OZARK                SHANNON              STONE               TANEY                TEXAS                WEBSTER             WRIGHT                 THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY.  PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.

SPC Public Severe Weather Outlook
Mon, 28 Feb 2011 04:19:02 -0600

 PUBLIC SEVERE WEATHER OUTLOOK   NWS STORM PREDICTION CENTER NORMAN OK 0417 AM CST MON FEB 28 2011  ...SIGNIFICANT SEVERE THUNDERSTORMS EXPECTED OVER PARTS OF THE TENNESSEE VALLEY INTO SOUTHERN APPALACHIANS TODAY...  THE NWS STORM PREDICTION CENTER IN NORMAN OKLAHOMA IS FORECASTING THE DEVELOPMENT OF POTENTIALLY WIDESPREAD DAMAGING WINDS AND A FEW STRONG TORNADOES OVER PARTS OF THE TENNESSEE VALLEY AND SOUTHERN APPALACHIANS TODAY.  THE AREAS MOST LIKELY TO EXPERIENCE THIS ACTIVITY INCLUDE         NORTHERN ALABAMA        NORTHWEST GEORGIA        MIDDLE AND EASTERN TENNESSEE  ELSEWHERE...SEVERE STORMS ARE ALSO POSSIBLE FROM THE LOWER MISSISSIPPI VALLEY AND LOWER OHIO VALLEY TO THE THE MIDDLE AND SOUTHEAST ATLANTIC COASTS.  AN UPPER-LEVEL STORM SYSTEM OVER THE CENTRAL AND SOUTHERN PLAINS EARLY THIS MORNING WILL ACCELERATE RAPIDLY EAST THROUGH THE MID AND LOWER MISSISSIPPI AND TENNESSEE VALLEYS TODAY AND EVENTUALLY OFF THE ATLANTIC COAST BY TUESDAY MORNING.  A COLD FRONT WILL ACCOMPANY THIS STORM SYSTEM EAST WITH THIS BOUNDARY SERVING AS THE FOCUS FOR SEVERE THUNDERSTORM DEVELOPMENT TODAY INTO TONIGHT.  STRONG SOUTHWEST WINDS JUST ABOVE THE GROUND HAVE ALLOWED A WARM AND HUMID AIR MASS TO PROGRESS NORTH FROM THE GULF OF MEXICO INTO THE OHIO VALLEY IN ADVANCE OF THIS STORM SYSTEM.  AS A RESULT... CONDITIONS OVER A LARGE AREA HAVE BECOME FAVORABLE FOR THE DEVELOPMENT OF STRONG TO SEVERE THUNDERSTORMS.  THE GREATEST RISK FOR POTENTIALLY WIDESPREAD DAMAGING WINDS AND A FEW STRONG TORNADOES IS EXPECTED TO DEVELOP ACROSS THE TENNESSEE VALLEY AND THE SOUTHERN APPALACHIANS TODAY AS THE UPPER-LEVEL STORM SYSTEM AND SURFACE COLD

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