Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
1147 AM CDT Sun Jun 21 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-221700-
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-
1147 AM CDT Sun Jun 21 2026 /1247 PM EDT Sun Jun 21 2026/

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

.DAY ONE...This Afternoon and Tonight.

Weather hazards expected...

  Limited Thunderstorm Risk south of I-80.
  Elevated Flooding Risk.
  High Swim Risk Lake Michigan Beaches tonight.

DISCUSSION...

Widespread soaking rainfall with localized corridors of
torrential rainfall may lead to flooding in some areas today. The
greatest likelihood of flooding is present near and south of I-
88.

A few thunderstorms may also occur, especially south of a Pontiac,
IL to Rensselaer, IN line.

Strengthening onshore winds will cause the threat for rip
currents at southern Lake Michigan beaches to ramp this evening
and continue through tonight.


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

Monday...
  High Swim Risk Lake Michigan Beaches.
Tuesday night through Saturday...
  Limited Thunderstorm Risk.

DISCUSSION...

An elevated danger for rip currents at southern Lake Michigan
beaches will continue into Monday.

Periodic thunderstorm chances are currently forecasted Tuesday
night through Saturday.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east-northeast around 30 mph.

$$

Hazard Report Provided By forecast.weather.gov