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 Severe Thunderstorm Watch 34
Mon, 28 Feb 2011 18:00:02 -0600

URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 34 NWS STORM PREDICTION CENTER NORMAN OK 505 PM EST MON FEB 28 2011 THE NWS STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF EAST CENTRAL GEORGIA CENTRAL NORTH CAROLINA CENTRAL SOUTH CAROLINA EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 505 PM UNTIL 1000 PM EST. HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHEAST OF RALEIGH NORTH CAROLINA TO 15 MILES WEST OF MACON GEORGIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES. OTHER WATCH INFORMATION...CONTINUE...WW 33... DISCUSSION...SQUALL LINE WILL CONTINUE MOVING EWD/SEWD ACROSS NC/SC/GA IMMEDIATELY IN ADVANCE OF THE COLD FRONT. INSTABILITY GRADUALLY WEAKENS INTO THE CENTRAL CAROLINAS WHERE DEWPOINTS HAVE MIXED WELL DOWN INTO THE 50S...BUT STEEP LOW-LEVEL LAPSE RATES AND 50-60 KT FLOW WITHIN 2 KM OF THE GROUND WILL STILL SUPPORT A DAMAGING WIND THREAT FOR A FEW MORE HOURS. AVIATION...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 28040. ...THOMPSON

SPC Tornado Watch 33
Mon, 28 Feb 2011 18:00:06 -0600

URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 33 NWS STORM PREDICTION CENTER NORMAN OK 130 PM EST MON FEB 28 2011 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND NORTHEAST ALABAMA NORTHWEST GEORGIA WESTERN NORTH CAROLINA UPSTATE SOUTH CAROLINA SOUTHERN MIDDLE AND EASTERN TENNESSEE EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 130 PM UNTIL 800 PM EST. 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 110 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH OF HICKORY NORTH CAROLINA TO 50 MILES SOUTHEAST OF TUSCALOOSA ALABAMA. 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...THIS TORNADO WATCH REPLACES TORNADO WATCH NUMBER 31. WATCH NUMBER 31 WILL NOT BE IN EFFECT AFTER 130 PM EST. CONTINUE...WW 32... DISCUSSION...STORM COVERAGE/INTENSITY SHOULD INCREASE THROUGH THE AFTERNOON ALONG AND IMMEDIATELY AHEAD OF A WEAK SURFACE WAVE ACROSS MIDDLE TN...AND IN ADVANCE OF A MIDLEVEL TROUGH OVER NRN MS/WRN TN/WRN KY. THE STORM ENVIRONMENT REMAINS FAVORABLE FOR SUPERCELLS AND A FEW TORNADOES ACROSS SE TN/AL/NW GA PER THE 18Z BMX SOUNDING. FARTHER N...STORMS IN ERN TN WILL DEVELOP EWD INTO NW NC...ALONG THE OUTFLOW BOUNDARY FROM THE EARLIER CONVECTION THAT CROSSED INTO VA. INSTABILITY WILL BE A LITTLE WEAKER THAN AREAS FARTHER SW...BUT VERTICAL SHEAR REMAINS STRONG...AND THE POTENTIAL WILL REMAIN FOR EMBEDDED SUPERCELL STRUCTURES. LATER DURING THE AFTERNOON...CONVECTION IS EXPECTED TO EVOLVE INTO MORE OF A LINEAR SYSTEM WITH A THREAT FOR DAMAGING WINDS AND BRIEF SPIN UPS ALONG THE BOWING LINE SEGMENTS. 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 450. MEAN STORM MOTION VECTOR 26045. ...THOMPSON

SPC Severe Thunderstorm Watch 34 Status Reports
Mon, 28 Feb 2011 18:00:05 -0600

  STATUS REPORT ON WW 34  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SE HKY TO 30 WNW RDU TO 15 SW AVC.  ..COHEN..02/28/11  ATTN...WFO...FFC...CAE...RAH...   STATUS REPORT FOR WS 34   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   GAC009-021-033-035-073-079-125-133-141-159-163-167-169-171-181- 189-207-211-221-237-245-263-265-269-289-293-301-303-317-319- 010040-  GA  .    GEORGIA COUNTIES INCLUDED ARE  BALDWIN              BIBB                BURKE                BUTTS                COLUMBIA            CRAWFORD             GLASCOCK             GREENE              HANCOCK              JASPER               JEFFERSON           JOHNSON              JONES                LAMAR               LINCOLN              MCDUFFIE             MONROE              MORGAN               OGLETHORPE           PUTNAM              RICHMOND             TALBOT               TALIAFERRO          TAYLOR               TWIGGS               UPSON               WARREN               WASHINGTON           WILKES              WILKINSON              NCC001-007-037-051-063-065-069-085-093-101-105-123-125-127-135- 151-153-163-165-167-183-191-195-010040-  NC  .    NORTH CAROLINA COUNTIES INCLUDED ARE

SPC Tornado Watch 33 Status Reports
Mon, 28 Feb 2011 18:00:08 -0600

  STATUS REPORT ON WW 33  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NNW MGM TO 25 NNW ATL TO 15 NNE CLT.  ..COHEN..02/28/11  ATTN...WFO...BMX...HUN...FFC...GSP...RNK...MRX...OHX...   STATUS REPORT FOR WT 33   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   ALC001-005-011-017-037-047-051-081-085-087-101-109-111-113-123- 010040-  AL  .    ALABAMA COUNTIES INCLUDED ARE  AUTAUGA              BARBOUR             BULLOCK              CHAMBERS             COOSA               DALLAS               ELMORE               LEE                 LOWNDES              MACON                MONTGOMERY          PIKE                 RANDOLPH             RUSSELL             TALLAPOOSA             GAC013-045-059-063-077-089-097-105-113-121-135-145-149-151-157- 195-199-217-219-231-247-255-285-297-010040-  GA  .    GEORGIA COUNTIES INCLUDED ARE  BARROW               CARROLL             CLARKE               CLAYTON              COWETA              DEKALB               DOUGLAS              ELBERT              FAYETTE              FULTON               GWINNETT            HARRIS               HEARD                HENRY               JACKSON              MADISON              MERIWETHER          NEWTON

SPC Tornado Watch 32 Status Reports
Mon, 28 Feb 2011 13:39:03 -0600

  STATUS REPORT ON WW 32  SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 N GSO TO 30 E LYH.  ..SMITH..02/28/11  ATTN...WFO...LWX...RNK...AKQ...   STATUS REPORT FOR WT 32   SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS   VAC037-083-143-590-282040-  VA  .    VIRGINIA COUNTIES INCLUDED ARE  CHARLOTTE            HALIFAX             PITTSYLVANIA             VIRGINIA INDEPENDENT CITIES INCLUDED ARE  DANVILLE                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.

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