[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 261429
SEL3
SPC WW 261429
ALZ000-TNZ000-262200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 723
NWS STORM PREDICTION CENTER NORMAN OK
930 AM CDT TUE OCT 26 2010

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

       NORTHERN ALABAMA
       MIDDLE TENNESSEE

EFFECTIVE THIS TUESDAY MORNING AND AFTERNOON FROM 930 AM UNTIL
500 PM CDT.

...THIS IS A PARTICULARLY DANGEROUS SITUATION...

DESTRUCTIVE TORNADOES...LARGE 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 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES NORTHEAST OF
NASHVILLE TENNESSEE TO 55 MILES SOUTHEAST OF TUPELO MISSISSIPPI.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).

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 720...WW 721...WW 722...

DISCUSSION...A PRE-FRONTAL BAND OF CONVECTION CURRENTLY DEEPENING
FROM N-CNTRL MS NWD TO E OF MKL IS EXPECTED TO EVOLVE INTO TSTMS
LATE THIS MORNING WITHIN A STRONGLY SHEARED AND
WARMING/DESTABILIZING ENVIRONMENT.  THE COMBINATION OF EFFECTIVE SRH
OF 300-400 M2/S2...MLCAPE OF 500-1000 J/KG AND THE POTENTIAL FOR
MORE DISCRETE STORM MODES SUGGEST A THREAT LONG-TRACKED SUPERCELLS
CAPABLE OF STRONG TORNADOES.

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
500. MEAN STORM MOTION VECTOR 24050.


...MEAD

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