WWUS20 KWNS 032050
SEL2
SPC WW 032050
ALZ000-MSZ000-040400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 612
NWS STORM PREDICTION CENTER NORMAN OK
350 PM CDT MON SEP 3 2012

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

       WESTERN AND CENTRAL ALABAMA
       CENTRAL AND EASTERN MISSISSIPPI

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 350 PM UNTIL
1100 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 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 20 MILES WEST NORTHWEST OF
COLUMBUS MISSISSIPPI TO 60 MILES SOUTH SOUTHWEST OF SELMA
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.

OTHER WATCH INFORMATION...CONTINUE...WW 611...

DISCUSSION...TSTMS EXPECTED TO INCREASE IN STRENGTH/COVERAGE OVER
THE NEXT 2-3 HOURS FROM  E CNTRL MS INTO CNTRL AL...INVOF 850 MB
CONFLUENCE ZONE ON SRN FRINGE OF REMNANT CIRCULATION OF FORMER TC
ISAAC. THIS ZONE ALSO COINCIDES WHERE GREATEST HEATING HAS OCCURRED
THIS AFTN...AND ALSO COINCIDES WITH AXIS OF MAXIMUM LOW-LVL
MOISTURE. SETUP COULD YIELD A COUPLE LONGER-LASTING SUPERCELLS WITH
LOW-LVL MESO/TORNADOES...IN ADDITION TO DMGG WIND. THE STRONGEST
STORMS SHOULD TRACK MORE OR LESS SEWD ALONG OUTFLOW BOUNDARY
SEGMENTS LEFT BY EARLIER CONVECTION.

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
550. MEAN STORM MOTION VECTOR 31025.


...CORFIDI