

506 

WWUS20 KWNS 280149

SEL9

SPC WW 280149

ALZ000-MSZ000-280900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 39

NWS STORM PREDICTION CENTER NORMAN OK

745 PM CST FRI FEB 27 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL ALABAMA

       CENTRAL AND EASTERN MISSISSIPPI



EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 745 PM

UNTIL 300 AM CST.



TORNADOES...HAIL TO 1.5 INCHES 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 NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTHWEST OF

GREENWOOD MISSISSIPPI TO 15 MILES EAST SOUTHEAST OF AUBURN

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.



OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 38. WATCH NUMBER 38 WILL NOT BE IN EFFECT AFTER 745

PM CST.



DISCUSSION...TSTMS/POSSIBLE SUPERCELLS EXPECTED TO PERSIST ALONG AND

JUST N OF SHALLOW WNW/ESE OUTFLOW BOUNDARY EXTENDING FROM CNTRL MS

INTO CNTRL AL.  ALTHOUGH POTENTIAL FOR ADDITIONAL STORM DEVELOPMENT

MAY TEMPORARILY BE DIMINISHED BY NOCTURNAL STABILIZATION...APPROACH

OF 70 KT MID LVL SPEED MAX NOW IN OK SUGGESTS THAT AN ASSOCIATED

INCREASE WILL OCCUR IN WSWLY LLJ OVER WW.  THIS IN TURN MAY LEAD TO

AN INCREASE IN STORM COVERAGE LATER TONIGHT/EARLY SAT.  STRENGTH OF

DEEP SHEAR AND SUSTAINED NATURE OF LOW LVL WAA MAY SUPPORT A FEW

SUPERCELLS WITH HAIL...SMALL SCALE BOWING SEGMENTS WITH WIND...AND

POSSIBLE TORNADOES.



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

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

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

450. MEAN STORM MOTION VECTOR 28030.





...CORFIDI

