Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
343 PM CDT Mon Jun 30 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-012045-
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-
343 PM CDT Mon Jun 30 2025 /443 PM EDT Mon Jun 30 2025/

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...with an associated:
   Level 1 of 5 Damaging Wind Risk...up to 60 mph.
 Limited Flooding Risk.

DISCUSSION...

Isolated to widely scattered thunderstorms remain possible during
the late afternoon and evening hours. The strongest storms will
be capable of producing localized strong to damaging downburst
winds and brief heavy rainfall. The highest coverage will be
favored southeast of a line from Pontiac to Valparaiso.


.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Friday and Saturday...
  Limited Thunderstorm Risk
  Limited Excessive Heat Risk
Sunday...
  Limited Thunderstorm Risk.

DISCUSSION...

Heat and humidity will return for the holiday weekend. The best
chance of storms will hold off until Saturday.

.SPOTTER INFORMATION STATEMENT...

 Spotter activation is not likely, however isolated storms may
prompt reports of localized higher winds.

GENERAL STORM MOTION OF THE DAY:

 Moving toward the east around 30 mph.

$$

Hazard Report Provided By forecast.weather.gov