SPC Tornado Watch 764
Sat, 11 Dec 2010 18:00:03 -0600
URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 764 NWS STORM PREDICTION CENTER NORMAN OK 315 PM CST SAT DEC 11 2010 THE NWS STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF PARTS OF NORTHEAST LOUISIANA LARGE PART OF CENTRAL AND WESTERN MISSISSIPPI EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 315 PM UNTIL 900 PM CST. TORNADOES...HAIL TO 0.5 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 65 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH OF NATCHEZ MISSISSIPPI TO 30 MILES EAST NORTHEAST OF GREENWOOD MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4). 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...THUNDERSTORMS ARE INCREASING IN NUMBER AND INTENSITY AHEAD OF STRONG COLD FRONT MOVING EWD ACROSS AR INTO NRN LA. AIR MASS THOUGH ONLY MARGINALLY UNSTABLE...GIVEN THE STRONG SHEAR PROFILES AND APPROACH OF VIGOROUS UPPER JET...WILL BE SUFFICIENTLY UNSTABLE TO SUPPORT LOW TOPPED SUPERCELLS AND A TORNADO THREAT. IN ADDITION DAMAGING WINDS WILL BECOME AN INCREASING THREAT AS STORMS EVOLVE INTO A LINE BY THIS EVENING ALONG THE COLD FRONT AS IT MOVES SEWD ACROSS THE WATCH. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION VECTOR 24035. ...HALES
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SPC Tornado Watch 764 Status Reports
Sat, 11 Dec 2010 18:00:05 -0600
STATUS REPORT ON WW 764 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NE ESF TO 45 NW JAN TO 25 NE GWO. ..BROYLES..12/11/10 ATTN...WFO...JAN...LIX... STATUS REPORT FOR WT 764 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS LAC025-029-107-120040- LA . LOUISIANA PARISHES INCLUDED ARE CATAHOULA CONCORDIA TENSAS MSC001-005-007-015-019-021-029-031-037-049-051-063-065-077-079- 085-089-091-097-099-101-113-121-123-127-129-147-149-155-157-159- 163-120040- MS . MISSISSIPPI COUNTIES INCLUDED ARE ADAMS AMITE ATTALA CARROLL CHOCTAW CLAIBORNE COPIAH COVINGTON FRANKLIN HINDS HOLMES JEFFERSON JEFFERSON DAVIS LAWRENCE LEAKE LINCOLN MADISON MARION MONTGOMERY NESHOBA NEWTON PIKE RANKIN SCOTT SIMPSON SMITH WALTHALL WARREN WEBSTER WILKINSON
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