

080 

WWUS20 KWNS 301729

SEL3

SPC WW 301729

ILZ000-KYZ000-MOZ000-310100-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 103

NWS Storm Prediction Center Norman OK

1230 PM CDT Thu Mar 30 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central and southern Illinois

  Western Kentucky

  Far eastern Missouri



* Effective this Thursday afternoon and evening from 1230 PM

  until 800 PM CDT.



* Primary threats include...

  Scattered damaging wind gusts to 70 mph possible

  Isolated very large hail events to 2 inches in diameter possible

  A tornado or two possible



SUMMARY...Strong to severe thunderstorms will continue to develop

and intensify as they race northeastward from far eastern Missouri

into central/southern Illinois and western Kentucky. A marginally

moist and unstable environment and ample vertical shear will support

a wind damage risk along with some potential for hail and possibly a

brief tornado or two (mainly across Illinois portions of the Watch).



The severe thunderstorm watch area is approximately along and 60

statute miles east and west of a line from 30 miles north northwest

of Decatur IL to 35 miles south of Paducah KY. 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.



&&



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 450. Mean storm motion vector

22035.



...Guyer

