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WWUS20 KWNS 291930

SEL3

SPC WW 291930

KSZ000-NEZ000-SDZ000-300300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 323

NWS Storm Prediction Center Norman OK

230 PM CDT Sun Jul 29 2018



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Northwest Kansas

  Western Nebraska

  Southwest South Dakota



* Effective this Sunday afternoon and evening from 230 PM until

  1000 PM CDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 3

    inches in diameter possible

  Isolated significant damaging wind gusts to 75 mph possible

  A tornado or two possible



SUMMARY...A couple supercells should develop southeast off the Black

Hills with an additional cluster of embedded supercells eventually

evolving from southeast Wyoming and northeast Colorado into

southwest Nebraska and northwest Kansas.



The severe thunderstorm watch area is approximately along and 50

statute miles east and west of a line from 70 miles north northeast

of Chadron NE to 80 miles southeast of Goodland KS. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU3).



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 322...



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

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

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

32030.



...Grams

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