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WWUS20 KWNS 131947

SEL9

SPC WW 131947

TNZ000-140200-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 579

NWS Storm Prediction Center Norman OK

250 PM CDT Tue Aug 13 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Middle and southeast Tennessee



* Effective this Tuesday afternoon and evening from 250 PM until

  900 PM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...Scattered thunderstorms developing across middle Tennessee

may intensify as they consolidate into an east-southeast moving

cluster towards southeast Tennessee.



The severe thunderstorm watch area is approximately along and 55

statute miles north and south of a line from 50 miles south

southwest of Clarksville TN to 25 miles east southeast of Crossville

TN. For a complete depiction of the watch see the associated watch

outline update (WOUS64 KWNS WOU9).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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 576...WW 577...WW 578...



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 550. Mean storm motion vector

29025.



...Grams

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