WATCHES: Tornado Watch Number 864

WWUS20 KWNS 251657
SEL4
SPC WW 251657
ALZ000-TNZ000-260000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 864
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CDT MON AUG 25 2008

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

PARTS OF NORTHERN ALABAMA
SMALL PART OF SOUTHERN MIDDLE TENNESSEE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM NOON UNTIL 700
PM CDT.

TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 40 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 70 MILES EAST OF HUNTSVILLE
ALABAMA TO 20 MILES SOUTH SOUTHWEST OF MUSCLE SHOALS ALABAMA.
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.

OTHER WATCH INFORMATION...CONTINUE...WW 863...

DISCUSSION...BANDS OF THUNDERSTORMS CONTINUE TO ROTATE NWD E OF
REMNANTS OF FAY OVER CENTRAL MS. WITH 30-40KT OF LOW LEVEL SHEAR
AND A VERY MOIST AIR MASS THERE WILL BE A CONTINUED THREAT OF SMALL
SUPERCELLS EMBEDDED IN THE BANDS ALONG WITH ISOLATED TORNADOES.
THREAT EXPECTED TO GRADUALLY SHIFT NWD THRU THE WATCH AREA THIS
AFTERNOON.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION VECTOR 18030.

...HALES

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