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511 

WWUS20 KWNS 100028

SEL6

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NEZ000-SDZ000-100600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 566

NWS Storm Prediction Center Norman OK

730 PM CDT Fri Aug 9 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northeast Nebraska

  Southeast South Dakota



* Effective this Friday night and Saturday morning from 730 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph likely

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  A tornado or two possible



SUMMARY...A cluster of intense thunderstorms over southern South

Dakota will track southeastward across the watch area this evening.

Damaging winds and hail are possible in the more organized cells.



The severe thunderstorm watch area is approximately along and 80

statute miles east and west of a line from 35 miles east southeast

of Oneill NE to 35 miles west northwest of Yankton SD. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU6).



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 564...WW 565...



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

2 inches. Extreme turbulence and surface wind gusts to 60 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

29030.



...Hart

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