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WWUS20 KWNS 162050

SEL8

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COZ000-KSZ000-NEZ000-WYZ000-170400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 588

NWS Storm Prediction Center Norman OK

250 PM MDT Fri Aug 16 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Eastern Colorado

  Northwest Kansas

  Western Nebraska

  Southeast Wyoming



* Effective this Friday afternoon and evening from 250 PM until

  1000 PM MDT.



* Primary threats include...

  Scattered damaging winds and isolated significant gusts to 75

    mph possible

  Scattered large hail and isolated very large hail events to 2.5

    inches in diameter possible

  A tornado or two possible



SUMMARY...A few supercells should develop east off the Front Range

with risks for very large hail and severe wind gusts. Uncertainty

exists in how far east severe storms will be maintained later this

evening into northwest Kansas.



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 30 miles north of

Torrington WY to 55 miles south of Burlington CO. 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.



&&



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

2.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

27030.



...Grams

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