

014 

WWUS20 KWNS 241259

SEL3

SPC WW 241259

ALZ000-TNZ000-241900-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 93

NWS STORM PREDICTION CENTER NORMAN OK

800 AM CDT SAT APR 24 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND NORTHERN ALABAMA

       MIDDLE TENNESSEE



EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 800 AM UNTIL

200 PM CDT.



...THIS IS A PARTICULARLY DANGEROUS SITUATION...



DESTRUCTIVE TORNADOES...LARGE HAIL TO 2 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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 20 MILES NORTH NORTHWEST OF

NASHVILLE TENNESSEE TO 30 MILES SOUTH SOUTHWEST OF SELMA ALABAMA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU3).



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...CONTINUE...WW 89...WW 90...WW 91...WW

92...



DISCUSSION...THUNDERSTORMS OVER MS WILL SPREAD EASTWARD INTO AL AND

MIDDLE TN THROUGH THE MORNING...WITH SCATTERED SUPERCELLS POSSIBLE.

STORMS WILL BE INITIALLY ELEVATED...BUT RAPID DESTABILIZATION WILL

INCREASE THE RISK OF TORNADOES BY LATE MORNING.  VERY STRONG SHEAR

PROFILES ALSO SUPPORT A RISK OF SIGNIFICANT TORNADOES.



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

SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE

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

500. MEAN STORM MOTION VECTOR 24035.





...HART

