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WWUS20 KWNS 292054

SEL4

SPC WW 292054

ILZ000-KYZ000-MOZ000-300300-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 174

NWS Storm Prediction Center Norman OK

355 PM CDT Sat Apr 29 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southern Illinois

  Extreme Western Kentucky

  Southeast Missouri



* Effective this Saturday afternoon and evening from 355 PM until

  1000 PM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Scattered large hail events to 1.5 inches in diameter possible

  A tornado or two possible



SUMMARY...A line of storms is bowing eastward across east-central

and southeast Missouri toward southern Illinois.  It will pose a

threat for damaging wind and possible hail as moves along and south

of a warm front through the later afternoon and evening.



The severe thunderstorm watch area is approximately along and 70

statute miles east and west of a line from 10 miles north of Mattoon

IL to 35 miles southwest of Cape Girardeau MO. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU4).



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 450. Mean storm motion vector

24030.



...Weiss

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