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WWUS20 KWNS 192322

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COZ000-KSZ000-NEZ000-200500-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 450

NWS Storm Prediction Center Norman OK

625 PM CDT Thu Aug 19 2021



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  Extreme northeast Colorado

  Northwest Kansas

  Southwest Nebraska



* Effective this Thursday night from 625 PM until Midnight CDT.



* Primary threats include...

  A few tornadoes possible

  Scattered damaging wind gusts to 70 mph likely

  Scattered large hail events to 1.5 inches in diameter possible



SUMMARY...Clusters of supercells will likely persist through the

late evening and early overnight hours, as the storm environment

becomes more favorable for a few tornadoes, in addition to damaging

winds and large hail.



The tornado watch area is approximately along and 65 statute miles

east and west of a line from 70 miles northwest of North Platte NE

to 20 miles south southeast of Goodland KS. For a complete depiction

of the watch see the associated watch outline update (WOUS64 KWNS

WOU0).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



REMEMBER...A Tornado Watch means conditions are favorable for

tornadoes and 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 449...



AVIATION...Tornadoes and a few severe thunderstorms with hail

surface and aloft to 1.5 inches. Extreme turbulence and surface wind

gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean

storm motion vector 24020.



...Thompson

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