Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
936 PM CDT Fri Aug 15 2025

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-170245-
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-
936 PM CDT Fri Aug 15 2025 /1036 PM EDT Fri Aug 15 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.
  Limited Flooding Risk.

DISCUSSION...

Scattered thunderstorms are possible the remainder of tonight.
While the threat of widespread severe weather is low, the
strongest storms could produce torrential downpours.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

Saturday and Sunday...
  Limited Thunderstorm Risk...with an associated:
     Level 1 of 5 Severe Thunderstorm Risk.
  Limited Flooding Risk.
  Limited to Elevated Excessive Heat Risk.
Monday and Tuesday...
  Limited Thunderstorm Risk.
  Limited Flooding Risk.
  Limited Excessive Heat Risk.

DISCUSSION...

There will be periodic chances of thunderstorms Saturday through
Tuesday with a limited risk for severe thunderstorms and heavy
rainfall induced localized flash flooding.

Afternoon heat indices above 100 degrees are possible as well
Saturday through Tuesday near and south of I-80.

.SPOTTER INFORMATION STATEMENT...

  Spotters activation is not anticipated.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the east at 25 to 30 mph.

$$

Hazard Report Provided By forecast.weather.gov