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029 

WWUS20 KWNS 170049

SEL1

SPC WW 170049

IAZ000-KSZ000-MOZ000-170900-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 341

NWS Storm Prediction Center Norman OK

745 PM CDT Fri Jun 16 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  South-central Iowa

  Northeast and eastern Kansas

  Western and Northern Missouri



* Effective this Friday night and Saturday morning from 745 PM

  until 400 AM CDT.



* Primary threats include...

  Widespread damaging winds likely with isolated significant gusts

    to 85 mph possible

  Scattered large hail likely with isolated very large hail events

    to 2 inches in diameter possible

  A tornado or two possible



SUMMARY...An intense linear convective system, responsible for a

measured 88 mph wind gust at the Omaha-Valley National Weather

Service office, will likely continue to expand and accelerate

southeastward this evening as it races into northeast/eastern Kansas

and western/northern Missouri, potentially including the Kansas City

Metro area, as well as parts of south-central Iowa. Widespread wind

damage seems likely this evening into the overnight in these areas,

along with some embedded tornado risk in addition to isolated

instances of large hail.



The severe thunderstorm watch area is approximately along and 75

statute miles east and west of a line from 50 miles north northeast

of Des Moines IA to 50 miles south southwest of Olathe KS. 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 338...WW 339...WW 340...



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

2 inches. Extreme turbulence and surface wind gusts to 75 knots. A

few cumulonimbi with maximum tops to 650. Mean storm motion vector

30040.



...Guyer

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