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WWUS20 KWNS 302332

SEL0

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NEZ000-SDZ000-010600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 320

NWS Storm Prediction Center Norman OK

635 PM CDT Tue Jun 30 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Eastern Nebraska

  Southeast South Dakota



* Effective this Tuesday night and Wednesday morning from 635 PM

  until 100 AM CDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph possible

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  A tornado or two possible



SUMMARY...Severe thunderstorms are expected to develop near an

eastward-advancing cold front this evening, initially across

southeast South Dakota south-southwestward into

east-central/south-central Nebraska. Isolated large hail can be

expected, with severe-caliber wind gusts becoming more common into

mid/late evening as storms linearly organize.



The severe thunderstorm watch area is approximately along and 65

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

of Huron SD to 45 miles south southwest of Hastings 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 319...



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

2 inches. Extreme turbulence and surface wind gusts to 65 knots. A

few cumulonimbi with maximum tops to 550. Mean storm motion vector

24025.



...Guyer

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