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034 

WWUS20 KWNS 211922

SEL2

SPC WW 211922

KSZ000-MOZ000-220300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 502

NWS Storm Prediction Center Norman OK

225 PM CDT Sat Oct 21 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Eastern Kansas

  Northwestern Missouri



* Effective this Saturday afternoon and evening from 225 PM until

  1000 PM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...Thunderstorms will increase in coverage and intensity

through late afternoon along and immediately ahead of a cold front.

The stronger storms initially could pose a large hail threat, though

storm mergers should lead to the formation of a squall line with

damaging winds by this evening.  An isolated tornado could occur

with embedded circulations in the line.



The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 55 miles north northwest

of Chillicothe MO to 50 miles south southeast of Wichita KS. For a

complete depiction of the watch see the associated watch outline

update (WOUS64 KWNS WOU2).



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.



&&



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

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

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

23040.



...Thompson

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