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COZ000-KSZ000-NEZ000-WYZ000-210400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Tornado Watch Number 411

NWS Storm Prediction Center Norman OK

400 PM MDT Thu Jun 20 2019



The NWS Storm Prediction Center has issued a



* Tornado Watch for portions of

  eastern Colorado

  northwestern Kansas

  western Nebraska

  eastern Wyoming



* Effective this Thursday afternoon and evening from 400 PM until

  1000 PM MDT.



* Primary threats include...

  A couple tornadoes possible

  Scattered large hail and isolated very large hail events to 2

    inches in diameter likely

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Strong to severe thunderstorm development initiating

across and east of the Front Range is expected to continue

intensifying while spreading across the central High Plains through

mid to late evening.  A few supercells are possible, including a

period with at least some tornado potential, particularly during the

6-8 PM MDT time frame.



The tornado watch area is approximately along and 85 statute miles

east and west of a line from 20 miles northwest of Chadron NE to 25

miles south southeast of Burlington CO. For a complete depiction of

the watch see the associated watch outline update (WOUS64 KWNS

WOU1).



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 408...WW 409...WW 410...



AVIATION...Tornadoes and 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 500. Mean

storm motion vector 27025.



...Kerr

