[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 210437
SEL2
SPC WW 210437
ALZ000-MSZ000-TNZ000-211100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 2
NWS STORM PREDICTION CENTER NORMAN OK
1035 PM CST FRI JAN 20 2012

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

       NORTHERN ALABAMA
       NORTHERN MISSISSIPPI
       SOUTHWEST AND MIDDLE TENNESSEE

EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1035 PM
UNTIL 500 AM CST.

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 65 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 70 MILES NORTHWEST OF
GREENWOOD MISSISSIPPI TO 75 MILES NORTHEAST OF HUNTSVILLE
ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).

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...THUNDERSTORMS ARE BEGINNING TO DEVELOP ALONG A FRONT
ACROSS TN.  STORM COVERAGE/INTENSITY ARE EXPECTED TO INCREASE AND
STORMS WILL SPREAD EWD/SEWD OVERNIGHT AS A WEAK LOW DEVELOPS ACROSS
TN...AND A MIDLEVEL TROUGH MOVES EWD FROM OK/AR/MO.  THE WARM SECTOR
S OF THE FRONT IS WEAKLY UNSTABLE WITH LOW-LEVEL AND DEEP-LAYER
VERTICAL SHEAR THAT IS FAVORABLE FOR EMBEDDED SUPERCELLS AND BOWING
SEGMENTS.  DAMAGING WINDS WILL BE THE MAIN SEVERE THREAT
OVERNIGHT...BUT A TORNADO OR TWO MAY OCCUR IN THE MOIST/STRONGLY
SHEARED ENVIRONMENT...AND MARGINALLY SEVERE HAIL WILL ALSO BE
POSSIBLE.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 26040.


...THOMPSON
WWWW
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