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WWUS20 KWNS 010426

SEL7

SPC WW 010426

ALZ000-GAZ000-TNZ000-010800-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 407

NWS Storm Prediction Center Norman OK

1130 PM CDT Sat Jul 31 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  northern Alabama

  northwestern Georgia

  parts of middle and eastern Tennessee



* Effective this Saturday night and Sunday morning from 1130 PM

  until 300 AM CDT.



* Primary threats include...

  Isolated damaging wind gusts to 65 mph possible



SUMMARY...Thunderstorms -- including a couple of stronger bowing

clusters -- will continue moving southeastward across the Tennessee

Valley area over the next couple of hours.  Locally damaging wind

gusts in excess of 58 MPH will be possible with stronger storms.



The severe thunderstorm watch area is approximately along and 50

statute miles either side of a line from 45 miles north northwest of

Muscle Shoals AL to 20 miles northeast of Chattanooga TN. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU7).



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.



&&



AVIATION...A few severe thunderstorms with hail surface and aloft to

1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few

cumulonimbi with maximum tops to 550. Mean storm motion vector

29040.



...Goss

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