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WWUS20 KWNS 132102

SEL8

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NEZ000-WYZ000-140400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 268

NWS Storm Prediction Center Norman OK

305 PM MDT Sun Jun 13 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Nebraska Panhandle

  Southeast Wyoming



* Effective this Sunday afternoon and evening from 305 PM until

  1000 PM MDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph possible

  Isolated very large hail events to 2 inches in diameter possible



SUMMARY...Initial discrete cells should persist across far southeast

Wyoming, while additional storms form over the northwest Nebraska

Panhandle. This activity should into an east-southeast moving

cluster this evening. Large hail transitioning to predominately

severe wind gusts are the main hazards.



The severe thunderstorm watch area is approximately along and 60

statute miles north and south of a line from 50 miles north

northwest of Cheyenne WY to 15 miles north of Alliance NE. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU8).



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 264...WW 265...WW

266...WW 267...



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 600. Mean storm motion vector

29020.



...Grams

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