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WWUS20 KWNS 152337

SEL6

SPC WW 152337

IAZ000-KSZ000-MOZ000-NEZ000-160600-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 336

NWS Storm Prediction Center Norman OK

640 PM CDT Thu Jun 15 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern and eastern Iowa

  Northeast Kansas

  Northern Missouri

  Southeast Nebraska



* Effective this Thursday night and Friday morning from 640 PM

  until 100 AM CDT.



* Primary threats include...

  Isolated very large hail events to 2 inches in diameter possible

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...Multiple corridors of storms including some splitting

supercells will continue to progress generally eastward across the

region through the evening hours. Large hail and locally damaging

wind gusts are the main risk.



The severe thunderstorm watch area is approximately along and 75

statute miles north and south of a line from 20 miles northeast of

Cedar Rapids IA to 20 miles west of Falls City NE. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU6).



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 332...WW 333...WW

334...WW 335...



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 550. Mean storm motion vector

25030.



...Guyer

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