WATCHES: Tornado Watch Number 860

WWUS20 KWNS 240743
SEL0
SPC WW 240743
ALZ000-241400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 860
NWS STORM PREDICTION CENTER NORMAN OK
235 AM CDT SUN AUG 24 2008

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

CENTRAL AND EASTERN ALABAMA

EFFECTIVE THIS SUNDAY MORNING FROM 235 AM UNTIL 900 AM CDT.

TORNADOES...HAIL TO 0.5 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 NORTH AND SOUTH OF A LINE FROM 45 MILES WEST SOUTHWEST OF
BIRMINGHAM ALABAMA TO 30 MILES EAST SOUTHEAST OF AUBURN ALABAMA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU0).

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 859. WATCH NUMBER 859 WILL NOT BE IN EFFECT AFTER
235 AM CDT.

DISCUSSION...CONVERGENCE ALONG CONFLUENCE BANDS IN ERN QUADRANT OF
T.D. FAY MAY CONTINUE TO BE SUFFICIENT TO SUPPORT DEVELOPMENT OF
WDLY SCTD SUSTAINED UPDRAFTS/SHOWERS THROUGH MID MORNING IN CNTRL
AND ERN AL...DESPITE WEAK LOW LVL LAPSE RATES. STRENGTH OF LOW LVL
DIRECTIONAL SHEAR /50 KTS ATTM AT BMX AND 36 KTS AT MXX/...AND
FAIRLY RICH MOISTURE INFLOW SUGGEST POTENTIAL FOR ISOLD TORNADOES
WITH LONGER-LIVED UPDRAFTS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
400. MEAN STORM MOTION VECTOR 15035.

...CORFIDI

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