Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
929 PM CDT Sun Aug 16 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-180230-
Winnebago-Boone-McHenry-Lake IL-Ogle-Lee-De Kalb-Kane-DuPage-
La Salle-Kendall-Grundy-Kankakee-Livingston-Iroquois-Ford-
Northern Cook-Central Cook-Southern Cook-Northern Will-
Southern Will-Eastern Will-Lake IN-Porter-Newton-Jasper-Benton-
929 PM CDT Sun Aug 16 2026 /1029 PM EDT Sun Aug 16 2026/

This Hazardous Weather Outlook is for portions of north central
Illinois...northeast Illinois and northwest Indiana.

.DAY ONE...Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk, mainly south of Interstate 80.

DISCUSSION...

Scattered showers and thunderstorms will continue south of
interstate 80 ahead of a cold front through midnight. Torrential
downpours are expected with these storms in addition to locally
gusty winds up to 40-50 mph.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Tuesday...
  Elevated Flooding Risk.
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
Wednesday...
  Limited Flooding Risk.
  Limited Thunderstorm Risk.

DISCUSSION...

Thunderstorm chances return late Tuesday into Wednesday, some
could be strong to severe and produce torrential rainfall which
may lead to flooding.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east-southeast at 20 to 25 mph.

$$

Hazard Report Provided By forecast.weather.gov