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WWUS20 KWNS 110205

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NEZ000-SDZ000-110800-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 253

NWS Storm Prediction Center Norman OK

905 PM CDT Thu Jun 10 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  western and central Nebraska

  western and central South Dakota



* Effective this Thursday night and Friday morning from 905 PM

  until 300 AM CDT.



* Primary threats include...

  Widespread damaging winds and isolated significant gusts to 80

    mph likely

  Scattered large hail likely with isolated very large hail events

    to 2 inches in diameter possible

  A tornado or two possible



SUMMARY...Storms are expected to increase in coverage with initial

supercells possible, transitioning to a squall line. Large hail,

damaging wind and a couple of tornadoes are possible this evening

into tonight.



The severe thunderstorm watch area is approximately along and 120

statute miles east and west of a line from 75 miles west northwest

of Mobridge SD to 55 miles southeast of Alliance NE. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU3).



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 251...WW 252...



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

2 inches. Extreme turbulence and surface wind gusts to 70 knots. A

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

26035.



...Dial

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