

692 

WWUS20 KWNS 300957

SEL7

SPC WW 300957

ALZ000-LAZ000-MSZ000-TNZ000-CWZ000-301700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 757

NWS STORM PREDICTION CENTER NORMAN OK

350 AM CST TUE NOV 30 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF ALABAMA

       SOUTHEASTERN LOUISIANA

       EASTERN AND SOUTHERN MISSISSIPPI

       A SMALL PART OF MIDDLE TENNESSEE

       COASTAL WATERS



EFFECTIVE THIS TUESDAY MORNING FROM 350 AM UNTIL 1100 AM CST.



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 60 STATUTE

MILES EITHER SIDE OF A LINE FROM 35 MILES SOUTHWEST OF HOUMA

LOUISIANA TO 50 MILES NORTH NORTHEAST OF GADSDEN ALABAMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU7).



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 755...TORNADO WATCH NUMBER 756. WATCH NUMBER 755 756

WILL NOT BE IN EFFECT AFTER 350 AM CST.



DISCUSSION...SRN PART OF SW-NE LA/MS/AL QLCS EXPECTED ACCELERATE EWD

LATER THIS MORNING AS TX UPR IMPULSE CONTINUES EWD...WHILE NRN PART

MOVES ONLY VERY SLOWLY E ACROSS CNTRL/NRN AL.  AMPLE WIND FIELD WILL

EXIST THROUGHOUT WW TO SUPPORT SUSTAINED STORMS/SUPERCELLS...AND

VERY RICH MOISTURE WILL REMAIN AHEAD OF CONVECTIVE SYSTEM OVER SE

LA/SRN MS/SRN AL.  BUT STRONGEST LOW LVL SHEAR WILL EXIST INVOF WEAK

WARM FRONT OVER CNTRL/NRN AL...WHERE LOW LVL MOISTURE RETURN WILL

CONTINUE.  THUS...SVR THREAT IN THE FORM OF SPORADIC DMGG WIND GUSTS

AND ISOLD TORNADOES EXPECTED TO PERSIST THROUGH LATER THIS

MORNING...ESPECIALLY FROM E CNTRL/SE MS NEWD INTO CNTRL/NRN AL.



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 400.

MEAN STORM MOTION VECTOR 23040.





...CORFIDI

