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WWUS20 KWNS 141914

SEL6

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IAZ000-MNZ000-NEZ000-SDZ000-150100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 436

NWS Storm Prediction Center Norman OK

315 PM EDT Fri Aug 14 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western Iowa

  Southwest Minnesota

  Eastern Nebraska

  Far southeast South Dakota



* Effective this Friday afternoon and evening from 315 PM until

  900 PM EDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Cells developing along a cold front should consolidate

into a cluster later this afternoon. Damaging winds will be the

threat, but large hail will be possible mainly through late

afternoon.



The severe thunderstorm watch area is approximately along and 40

statute miles east and west of a line from 55 miles north northeast

of Worthington MN to 40 miles south southeast of Norfolk NE. 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.



&&



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 550. Mean storm motion vector

28030.



...Grams

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