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WWUS20 KWNS 082051

SEL8

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URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 638

NWS Storm Prediction Center Norman OK

255 PM MDT Sun Sep 8 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and Northeastern Colorado



* Effective this Sunday afternoon and evening from 255 PM until

  900 PM MDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...Thunderstorms over the high terrain of central Colorado

will intensify as it moves eastward into the High Plains.  Damaging

wind gusts are the main concern with the strongest cells, along with

some risk of hail.



The severe thunderstorm watch area is approximately along and 75

statute miles east and west of a line from 40 miles north northwest

of Fort Collins CO to 15 miles southeast of Pueblo 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

1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A

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

26030.



...Hart

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