

435 

WWUS20 KWNS 110057

SEL1

SPC WW 110057

COZ000-KSZ000-NEZ000-110800-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 81

NWS Storm Prediction Center Norman OK

800 PM CDT Thu May 10 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Far northeast Colorado

  Far northwest Kansas

  Western and central Nebraska



* Effective this Thursday night and Friday morning from 800 PM

  until 300 AM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Scattered damaging wind gusts to 70 mph possible



SUMMARY...Individual storms including supercells will continue to

merge and cluster into an eastward-moving complex of storms this

evening. Bouts of severe hail and locally damaging winds will be the

main risks with storms expected to move into central Nebraska by

late evening/overnight.



The severe thunderstorm watch area is approximately along and 95

statute miles east and west of a line from 10 miles east northeast

of Valentine NE to 20 miles south southeast of Mccook NE. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU1).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 79...WW 80...



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

27030.



...Guyer

