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736 

WWUS20 KWNS 192242

SEL8

SPC WW 192242

KSZ000-NEZ000-200600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 458

NWS Storm Prediction Center Norman OK

545 PM CDT Sat Aug 19 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northwestern and north central Kansas

  The central third of Nebraska



* Effective this Saturday afternoon and Sunday morning from 545

  PM until 100 AM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated very large hail events to 2.5 inches in diameter

    possible



SUMMARY...Thunderstorms are forecast to increase in coverage and

intensify over the next couple of hours, with risk for large hail

and damaging winds likewise increasing in and near the watch area.

Severe risk will continue for several hours, before diminishing in

the late evening hours.



The severe thunderstorm watch area is approximately along and 75

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

Oneill NE to 30 miles west southwest of Hill City KS. 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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 457...



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

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

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

28030.



...Goss

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