

046 

WWUS20 KWNS 061545

SEL0

SPC WW 061545

COZ000-UTZ000-WYZ000-062300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 260

NWS Storm Prediction Center Norman OK

950 AM MDT Sat Jun 6 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western Colorado

  Eastern Utah

  Extreme southwestern Wyoming



* Effective this Saturday morning and afternoon from 950 AM until

  500 PM MDT.



* Primary threats include...

  Scattered damaging winds likely with isolated significant gusts

    to 75 mph possible

  Isolated large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms will increase in coverage and intensity from

late morning through the afternoon while spreading

north-northeastward across eastern Utah and western Colorado.  The

storm environment will favor a mix of both supercells and bowing

line segments capable of producing damaging winds and large hail.

An isolated tornado cannot be ruled out.



The severe thunderstorm watch area is approximately along and 125

statute miles east and west of a line from 55 miles northeast of

Vernal UT to 25 miles southwest of Cortez CO. 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

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

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

21050.



...Thompson

