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WWUS20 KWNS 070017

SEL0

SPC WW 070017

SDZ000-070600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 410

NWS Storm Prediction Center Norman OK

720 PM CDT Fri Aug 6 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  South Central South Dakota



* Effective this Friday night and Saturday morning from 720 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph likely

  Scattered large hail events to 1.5 inches in diameter possible



SUMMARY...A cluster of thunderstorms over southwest South Dakota

will track eastward across the watch area this evening, posing a

risk of locally damaging wind gusts and hail.



The severe thunderstorm watch area is approximately along and 50

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

Philip SD to 70 miles northeast of Valentine NE. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU0).



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 409...



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 500. Mean storm motion vector

26035.



...Hart

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