Friday, April 18, 2008

Tornado Watch - SW Alabama



TORNADO WATCH NUMBER 208
NWS STORM PREDICTION CENTER NORMAN OK
640 PM CDT FRI APR 18 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

SOUTHWEST ALABAMA
FAR WESTERN PARTS OF THE FLORIDA PANHANDLE
COASTAL WATERS

EFFECTIVE THIS FRIDAY NIGHT FROM 640 PM UNTIL MIDNIGHT
CDT.

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 50
STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES
NORTHWEST OF EVERGREEN ALABAMA TO 35 MILES SOUTH OF
MOBILE ALABAMA. FOR ACOMPLETE DEPICTION OF THE WATCH
SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU8).


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 207...

DISCUSSION...SCTD SEMI-DISCRETE SUPERCELLS MAY
CONTINUE TO FORM AHEAD OF SRN MS/SE LA COLD FRONT
THROUGH THIS EVENING AS THE FRONT CONTINUES E INTO
AL. TEMPORAL VEERING OF FLOW WILL OCCUR AT ALL
LEVELS OVER SW AL AS NEGATIVELY-TILTED LWR MS VLY
UPR TROUGH CONTINUES NEWD. THIS SHOULD SUPPORT
INCREASED LOW-LEVEL MOISTURE ADVECTION INTO WW
AREA AT THE SAME TIME THAT DEEP DIRECTIONAL SHEAR
STRENGTHENS. OVERALL RESULT MAY BE AN EXTENTION
OF CURRENT SVR/ISOLD TORNADO THREAT IN SE MS/SE
LA EWD INTO SW AL...BEFORE DIURNAL COOLING/NVA
ULTIMATELY SUPPRESS STORM DEVELOPMENT LATER TONIGHT.

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