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197 

WWUS20 KWNS 292339

SEL2

SPC WW 292339

ARZ000-OKZ000-TXZ000-300600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 472

NWS Storm Prediction Center Norman OK

640 PM CDT Sat Aug 29 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western Arkansas

  Southeast Oklahoma

  Far Northeast Texas



* Effective this Saturday night and Sunday morning from 640 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Scattered large hail events to 1.5 inches in diameter possible



SUMMARY...Locally intense thunderstorm development is expected

especially near a front and outflow boundary this evening across the

region, with very strong instability favorable for at least isolated

severe thunderstorms. One or more semi-organized

southeastward-moving clusters could ultimately evolve later this

evening, mainly near/east of the Oklahoma/Arkansas border.



The severe thunderstorm watch area is approximately along and 75

statute miles north and south of a line from 40 miles west southwest

of Mcalester OK to 70 miles northeast of Texarkana AR. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU2).



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 469...WW 470...WW 471...



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 600. Mean storm motion vector

32020.



...Guyer

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