Hazard Report Provided By forecast.weather.gov

Hazardous Weather Outlook
National Weather Service Chicago/Romeoville IL
300 PM CDT Mon Jun 8 2026

ILZ003>006-008-010>013-019>021-023-032-033-039-103>108-INZ001-002-
010-011-019-092000-
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-
300 PM CDT Mon Jun 8 2026 /400 PM EDT Mon Jun 8 2026/

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

.DAY ONE...Tonight.

Weather hazards expected...

  Elevated Thunderstorm Risk.
  Elevated Flooding Risk.

DISCUSSION...

Showers and thunderstorms are expected into early evening. The
strongest will produce torrential rainfall rates, which may lead
to localized flash flooding.

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

Tuesday night through Thursday...
  Limited to Elevated Flooding Risk at times.
  Limited to Elevated Severe Thunderstorm Risk at times.

DISCUSSION...

Multiple rounds of thunderstorms are expected in the Tuesday
through Thursday period. Some storms may be strong to severe,
especially on Thursday.

.SPOTTER INFORMATION STATEMENT...

  Spotter activation will not be necessary through tonight.

GENERAL STORM MOTION OF THE DAY:

  Moving toward the north at 25 mph.

$$

Hydrologic Outlook
ILC007-031-037-043-053-063-075-089-091-093-097-099-103-105-111-141-
197-201-090500-

Hydrologic Outlook
National Weather Service Chicago IL
1244 PM CDT Mon Jun 8 2026

...Areas of heavy rainfall this afternoon and evening may lead to
isolated instances of flooding...

Periods of showers and thunderstorms are expected to move back into
northern Illinois this afternoon and evening. Some showers and
thunderstorms will be capable of rain rates of 2-3 inches per hour,
which could cause isolated flooding, especially in urban areas or
areas that recently received heavy rainfall.

Atmospheric conditions are very favorable for high rainfall rates as
precipitable water values have been observed just under 2 inches
with forecasted values near or exceeding 2 inches by later today.
Despite the favorability for heavy rainfall, most of northern
Illinois is experiencing drought conditions with low rivers and low
soil moisture. Due to dry conditions, higher rainfall rates will be
required for flooding, making the scope of possible flooding more
isolated. Locations with the highest chance of ponding and localized
flooding due to heavy rainfall are urban areas or areas that
received heavy rainfall over the last few days, including isolated
portions of La Salle, Livingston, Ford, Iroquois, Kankakee, and Will
counties.

This outlook means that elevated water levels and potential impacts
are possible, but not yet certain. Persons should closely monitor
the latest forecasts.

No updates to this outlook product are currently scheduled.
$$

WSL

Hazard Report Provided By forecast.weather.gov