

000 

WWUS20 KWNS 222205

SEL9

SPC WW 222205

ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-230400-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 729

NWS STORM PREDICTION CENTER NORMAN OK

505 PM CDT MON OCT 22 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST ALABAMA

       WESTERN FLORIDA PENINSULA

       SOUTHEAST LOUISIANA

       SOUTHERN MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 505 PM UNTIL

1100 PM CDT.



TORNADOES...HAIL TO 1 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 15 MILES WEST OF HOUMA

LOUISIANA TO 30 MILES SOUTH SOUTHEAST OF EVERGREEN ALABAMA.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



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...SMALL AND ISOLATED SUPERCELLS ARE DRIFTING ONSHORE THIS

AFTERNOON FROM SOUTHEASTERN LA TO MOBILE BAY.  PRESENCE OF AMPLE

MOISTURE...STRONG VERTICAL SHEAR...AND APPROACHING UPPER TROUGH

SUPPORT A RISK OF ISOLATED TORNADOES THROUGH THE EVENING HOURS.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.

MEAN STORM MOTION VECTOR 22030.





...HART

