Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
301 AM CDT Sat Aug 15 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-160815-
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-
301 AM CDT Sat Aug 15 2026 /401 AM EDT Sat Aug 15 2026/

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

.DAY ONE...Today and Tonight.

Weather hazards expected...

  Significant Flooding Risk south of Interstate 80 this morning.
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Damaging Wind Risk...up to 60 mph.

DISCUSSION...

Showers and thunderstorms will continue across northern Illinois
and northwest Indiana through the morning. Torrential rainfall is
occurring with these storms, especially south of interstate 80,
which could lead to flash flooding. Locally gusty winds cannot be
ruled out either with storms this morning.

Another period of showers and thunderstorms is expected with a
cold front tonight into Sunday. These storms may also produce
heavy downpours and locally gusty winds.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

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

DISCUSSION...

A strong to locally severe storm cannot be ruled out Sunday,
mainly in the morning. Additional storm chances are expected
Tuesday night into Wednesday.

.SPOTTER INFORMATION STATEMENT...

  Spotters may be needed for flash flooding reports this morning.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east at 30 mph.

$$

Hazard Report Provided By forecast.weather.gov