

211 

WWUS20 KWNS 212215

SEL2

SPC WW 212215

COZ000-NEZ000-SDZ000-220400-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 192

NWS Storm Prediction Center Norman OK

415 PM MDT Fri May 21 2021



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  northeast Colorado

  western Nebraska

  southern South Dakota



* Effective this Friday afternoon and evening from 415 PM until

  1000 PM MDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible

  A tornado or two possible



SUMMARY...Scattered storms developing over the central High Plains

this evening will become capable of producing large to very large

hail, downburst winds and a couple of tornadoes.



The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 65 miles northwest of

Valentine NE to 50 miles south southeast of Limon CO. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU2).



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

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

20035.



...Dial

