[BNAWX] Severe Local Storm Watch and Watch Cancellation

[EMWIN Server]

WWUS20 KWNS 041805
SEL3
SPC WW 041805
ALZ000-TNZ000-042300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 93
NWS STORM PREDICTION CENTER NORMAN OK
105 PM CDT MON APR 4 2011

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

       WESTERN AND NORTHERN ALABAMA
       SOUTHERN MIDDLE TENNESSEE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 105 PM UNTIL 600
PM CDT.

TORNADOES...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 100 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES NORTHWEST OF
HUNTSVILLE ALABAMA TO 35 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 89...WW 90...WW 91...WW
92...

DISCUSSION...MATURING QLCS WILL CONTINUE TO SURGE EWD ACROSS MS/TN
TOWARD WRN AND NRN AL.  ADDITIONAL ISOLATED STORM DEVELOPMENT WILL
BE POSSIBLE IN ADVANCE OF THE FRONTAL SQUALL LINE.  A COMBINATION OF
MID 60S BOUNDARY LAYER DEWPOINTS...SURFACE TEMPERATURES IN THE
70S...AND STRONG SWLY SHEAR PROFILES WILL FAVOR MAINTENANCE OF THE
QLCS WITH AN ATTENDANT RISK FOR DAMAGING WINDS.  A COUPLE OF
TORNADOES WILL ALSO BE POSSIBLE IF THE PRE-FRONTAL CONVECTION CAN
DEVELOP SUPERCELL CHARACTERISTICS PRIOR TO BEING OVERTAKEN BY THE
LINE...AND WITH EMBEDDED QLCS CIRCULATIONS.

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 26040.


...THOMPSON

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