WWUS20 KWNS 181500
SEL0  
SPC WW 181500
ILZ000-INZ000-MIZ000-OHZ000-LMZ000-182200-

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 220
NWS Storm Prediction Center Norman OK
1105 AM EDT Mon May 18 2026

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Eastern Illinois
  Northern and Central Indiana
  Southwest Michigan
  Northwest Ohio
  Lake Michigan

* Effective this Monday morning and evening from 1105 AM until
  600 PM EDT.

* Primary threats include...
  Scattered damaging wind gusts to 70 mph likely
  Isolated large hail events to 1.5 inches in diameter possible
  A tornado or two possible

SUMMARY...A line of thunderstorms over central Illinois will track
northeastward through the day across the watch area.  Swaths of
damaging winds are expected with the more intense line segments.

The severe thunderstorm watch area is approximately along and 85
statute miles north and south of a line from 30 miles northwest of
Champaign IL to 55 miles east of Fort Wayne IN. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU0).

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
25035.

...Hart