WATCHES: Tornado Watch Number 658

WWUS20 KWNS 011822
SEL8
SPC WW 011822
ALZ000-GAZ000-TNZ000-020100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 658
NWS STORM PREDICTION CENTER NORMAN OK
120 PM CDT MON OCT 1 2012

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

EAST CENTRAL AND NORTHEAST ALABAMA
NORTHERN AND WESTERN GEORGIA
SOUTHERN MIDDLE TENNESSEE

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 120 PM UNTIL 800
PM CDT.

TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 65 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHEAST OF
COLUMBUS GEORGIA TO 40 MILES WEST NORTHWEST OF CHATTANOOGA
TENNESSEE. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

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...MODEST HEATING OF A VERY MOIST WARM SECTOR BOUNDARY
LAYER HAS CONTRIBUTED TO AN INCREASE IN THUNDERSTORMS OVER THE PAST
HOUR OR SO. THE DEVELOPING STORMS HAVE BEGUN TO EXHIBIT WEAK
LOW-LEVEL CIRCULATIONS...AND GIVEN THE FAVORABLE LOW-LEVEL MOISTURE
AND STRONG LOW-LEVEL SHEAR /0-1 KM SHEAR VALUES AROUND 30 KT/...AN
UPWARD TREND IN TERMS OF STORM ORGANIZATION IS POSSIBLE THIS
AFTERNOON. AS A RESULT...POTENTIAL FOR A FEW TORNADOES ALONG WITH
LOCALLY DAMAGING WIND GUSTS IS EVIDENT.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 55 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 21035.


...GOSS/HART

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