

000 

WWUS20 KWNS 230411

SEL0

SPC WW 230411

ALZ000-230900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 730

NWS STORM PREDICTION CENTER NORMAN OK

1110 PM CDT MON OCT 22 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL ALABAMA



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 1110 PM

UNTIL 400 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 35 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES EAST NORTHEAST OF

CENTREVILLE ALABAMA TO 45 MILES SOUTH SOUTHWEST OF SELMA 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.



DISCUSSION...CLUSTER OF SUPERCELL THUNDERSTORMS CONTINUES TO POSE

OCCASIONAL TORNADO RISK...IN ENVIRONMENT CHARACTERIZED BY MOIST LOW

LEVEL PROFILE AND VERY STRONG VERTICAL SHEAR.  MOB/BMX VAD PROFILES

INDICATE 3KM SRH VALUES OF 300-500 M2/S2 SUGGESTING THAT THREAT OF

ISOLATED TORNADOES MAY PERSIST FOR A FEW MORE HOURS OVER A SMALL

PART OF CENTRAL AL.



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

500. MEAN STORM MOTION VECTOR 21030.





...HART

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