[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 221735
SEL5
SPC WW 221735
ALZ000-GAZ000-TNZ000-230000-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 725
NWS STORM PREDICTION CENTER NORMAN OK
1235 PM CDT TUE JUL 22 2008

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

       MUCH OF NORTHERN ALABAMA
       PARTS OF NORTHWEST GEORGIA
       PARTS OF MIDDLE AND EASTERN TENNESSEE

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1235 PM UNTIL
700 PM CDT.

HAIL TO 2 INCHES 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 75
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES NORTHWEST
OF TUSCALOOSA ALABAMA TO 60 MILES EAST OF CROSSVILLE TENNESSEE.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 724...

DISCUSSION...OUTFLOW BOUNDARY FROM E OF BNA SWWD INTO NRN MS WILL
FOCUS STRONG/SEVERE THUNDERSTORMS AS IT MOVES SEWD INTO A VERY MOIST
AND UNSTABLE WARM SECTOR.  WHILE SHEAR IS GENERALLY LESS THAN 20KTS
COMBINATION OF COLD POOL DEVELOPMENT AND WET MICRO BURSTS SUPPORTS A
WIND DAMAGE THREAT AS STORMS INCREASE IN NUMBER AND INTENSITY ACROSS
THE WATCH NEXT SEVERAL HOURS.

AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
MOTION VECTOR 27015.


...HALES


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