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000 

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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