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WWUS20 KWNS 022255

SEL0

SPC WW 022255

COZ000-KSZ000-NEZ000-030500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 390

NWS Storm Prediction Center Norman OK

500 PM MDT Sun Jul 2 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northeast Colorado

  Northwest Kansas

  Western Nebraska



* Effective this Sunday afternoon and evening from 500 PM until

  1100 PM MDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Relatively slow moving clusters initially capable of bouts

of large hail will continue to spread generally southward across the

region through this evening with severe-caliber winds also a

possibility.



The severe thunderstorm watch area is approximately along and 105

statute miles north and south of a line from 75 miles northwest of

Imperial NE to 35 miles south southeast of Broken Bow 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.



&&



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

35015.



...Guyer

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