517
FGUS73 KLOT 081744
ESFLOT
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