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684 

WWUS20 KWNS 020320

SEL0

SPC WW 020320

TNZ000-021000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 130

NWS STORM PREDICTION CENTER NORMAN OK

1020 PM CDT SAT MAY 1 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MIDDLE TENNESSEE



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1020 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 35 MILES NORTH OF NASHVILLE

TENNESSEE TO 60 MILES SOUTH SOUTHWEST OF NASHVILLE TENNESSEE.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU0).



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 127...WW 128...WW 129...



DISCUSSION...ISOLATED SUPERCELLS WILL PERSIST ALONG RETREATING WARM

FRONT/OUTFLOW BOUNDARY ACROSS MIDDLE TN.  VERTICAL SHEAR WILL BE

SUFFICIENT FOR TORNADOES WITH STORMS INTERACTING WITH THE BOUNDARY.

OTHERWISE...LARGE HAIL AND DAMAGING GUSTS WILL BE POSSIBLE WITH

SLIGHTLY ELEVATED STORMS N OF THE BOUNDARY.



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 22030.





...THOMPSON

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