

948 

WWUS20 KWNS 280956

SEL8

SPC WW 280956

ALZ000-281700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 88

NWS STORM PREDICTION CENTER NORMAN OK

455 AM CDT SAT MAR 28 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL ALABAMA



EFFECTIVE THIS SATURDAY MORNING FROM 455 AM UNTIL NOON CDT.



HAIL TO 1.5 INCHES 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 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST OF

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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...THIS SEVERE THUNDERSTORM WATCH REPLACES

TORNADO WATCH NUMBER 84. WATCH NUMBER 84 WILL NOT BE IN EFFECT

AFTER 455 AM CDT. CONTINUE...WW 86...WW 87...



DISCUSSION...DESPITE ONLY MARGINAL INSTABILITY AND FAIRLY STABLE

BOUNDARY LAYER...STRONG SHEAR AND DEEP ASCENT WILL CONTINUE TO FORCE

STRONG/SEVERE THUNDERSTORMS ACROSS CENTRAL AL THIS MORNING.  LARGE

HAIL AND DAMAGING WINDS WILL BE PRIMARY SEVERE THREATS.

HOWEVER...THE POTENTIAL FOR AN ISOLATED TORNADO MAY INCREASE TOWARDS

THE LATE MORNING AND SOME OF THESE COUNTIES MAY NEED TO BE INCLUDED

IN A TORNADO WATCH AT A LATER TIME.



AVIATION...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 500. MEAN STORM

MOTION VECTOR 24035.





...EVANS

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