The Storm Prediction Center has issued a Tornado Watch until 4 p.m. for parts of Louisiana, Mississippi, Alabama, and Tennessee. The probabilities for this watch,according to the SPC are:
URGENT - IMMEDIATE BROADCAST REQUESTEDTORNADO WATCH NUMBER 195
NWS STORM PREDICTION CENTER NORMAN OK
1015 AM CDT FRI APR 11 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN AND NORTHERN ALABAMA
NORTHEASTERN LOUISIANA
CENTRAL AND NORTHEASTERN MISSISSIPPI
MIDDLE AND EASTERN TENNESSEE
EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 1015 AM UNTIL
400 PM CDT.
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 100 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTHWEST OF
CROSSVILLE TENNESSEE TO 45 MILES WEST OF PINE BELT MISSISSIPPI.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).
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...AREA IS EXPERIENCING DIABATIC DESTABILIZATION AT SFC
AND WEAKENING MLCINH...ALONG WITH SUFFICIENT MOISTURE TO SUPPORT
CONTINUING TSTM INTENSIFICATION ACROSS WW AREA -- BOTH ALONG AND
AHEAD OF PRIMARY CONVECTIVE BAND INITIALLY OBSERVED FROM WRN TN SWWD
TO NERN LA. FAVORABLE LOW-LEVEL HODOGRAPHS AND DEEP-LAYER SHEAR
PROFILES EXIST TO SUPPORT BOTH SUPERCELLULAR AND BOW/QLCS STORM
MORPHOLOGIES...WITH RELATIVELY DISCRETE STORMS POSSIBLE AHEAD OF
MAIN LINE.
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 24035.
...EDWARDS/THOMPSON
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