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WWUS20 KWNS 240456

SEL5

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IAZ000-NEZ000-SDZ000-241100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 215

NWS Storm Prediction Center Norman OK

1200 AM CDT Sun May 24 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Extreme northwest Iowa

  Parts of central and northeast Nebraska

  Southeast South Dakota



* Effective this Sunday morning from Midnight until 600 AM CDT.



* Primary threats include...

  Scattered damaging winds likely with 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...A line of storms in central Nebraska will gradually

overtake a separate cluster of supercells, which should encourage

the development of more pronounced bowing segments within the line.

While damaging winds and hail will be the main threats, there will

be a chance for a tornado or two with the complex storm interactions

in the next two hours or so in central Nebraska.



The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 45 miles north northwest

of Yankton SD to 60 miles west southwest of Columbus NE. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU5).



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 213...WW 214...



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

25030.



...Thompson

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