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000 

WWUS20 KWNS 190325

SEL6

SPC WW 190325

ALZ000-MSZ000-TNZ000-191000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 726

NWS STORM PREDICTION CENTER NORMAN OK

1025 PM CDT THU OCT 18 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN AND WESTERN ALABAMA

       EASTERN MISSISSIPPI

       MIDDLE TENNESSEE



EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1025 PM

UNTIL 500 AM CDT.



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 EAST AND WEST OF A LINE FROM 55 MILES NORTHEAST OF

NASHVILLE TENNESSEE TO 95 MILES SOUTH SOUTHWEST OF COLUMBUS

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).



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 722...WW 724...WW 725...



DISCUSSION...LINE OF STRONG/SEVERE STORMS EXTENDS FROM WESTERN TN

INTO CENTRAL MS.  THESE STORMS ARE LIKELY TO MAINTAIN INTENSITY

THROUGH MUCH OF THE NIGHT AS THEY MOVE THROUGH MOIST AND MODERATELY

UNSTABLE AIR MASS.  DAMAGING WINDS APPEAR TO BE THE MAIN THREAT.

HOWEVER...LOW LEVEL VERTICAL SHEAR IS SUFFICIENTLY STRONG TO POSE A

RISK OF ISOLATED 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

500. MEAN STORM MOTION VECTOR 25030.





...HART

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