[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 300748
SEL4
SPC WW 300748
ALZ000-TNZ000-301600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 14
NWS STORM PREDICTION CENTER NORMAN OK
150 AM CST WED JAN 30 2013

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

       NORTHERN AND WEST-CENTRAL ALABAMA
       MIDDLE TENNESSEE

EFFECTIVE THIS WEDNESDAY MORNING FROM 150 AM UNTIL 1000 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 50 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES WEST OF BIRMINGHAM
ALABAMA TO 45 MILES NORTH OF CROSSVILLE TENNESSEE.  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 12...WW 13...

DISCUSSION...AN EXTENSIVE QLCS WITH EMBEDDED SUPERCELLS IS EXPECTED
TO ADVANCE EWD ACROSS THE WATCH AREA THIS MORNING.  30/06Z JAN
SOUNDING IS LIKELY REPRESENTATIVE OF THE INFLOW AIR MASS TO THE
CONVECTIVE SYSTEM...FEATURING A RELATIVELY MOIST ENVIRONMENT WITH
MLCAPE OF AROUND 500 J/KG.  GIVEN THE STRONG FORCING FOR ASCENT AND
VERY FAVORABLE WIND PROFILES FOR UPDRAFT ROTATION...THE RISK FOR
TORNADOES AND DAMAGING WINDS WILL CONTINUE.

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 400.
MEAN STORM MOTION VECTOR 22045.


...MEAD

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