

297 

WWUS20 KWNS 252237

SEL7

SPC WW 252237

ALZ000-260200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 697

NWS STORM PREDICTION CENTER NORMAN OK

440 PM CST TUE DEC 25 2012



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       NORTH CENTRAL ALABAMA



EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 440 PM UNTIL

800 PM CST.



HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST OF

TUSCALOOSA ALABAMA TO 40 MILES EAST SOUTHEAST OF BIRMINGHAM

ALABAMA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 695...WW 696...



DISCUSSION...A WELL-DEFINED BOW ECHO IS RACING EAST-NORTHEASTWARD

ACROSS THE MS/AL LINE TOWARD NORTH-CENTRAL AL.  THIS COMPLEX OF

STORMS IS IN A REGION OF RELATIVELY DRY/STABLE LOW LEVEL

CONDITIONS...SUGGESTING THAT DAMAGING WIND GUSTS WILL HAVE TROUBLE

REACHING THE GROUND.  NEVERTHELESS...THE MESOSCALE ORGANIZATION OF

THE SYSTEM MAY CONTINUE TO POSE A LOCALIZED RISK OF SEVERE STORMS

FOR ANOTHER FEW HOURS ACROSS THE WW AREA.



AVIATION...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 26035.





...HART

