Area Boone, IL; Cook, IL; De Kalb, IL; DuPage, IL; Grundy, IL; Kane, IL; Kendall, IL; Lake, IL; La Salle, IL; Lee, IL; McHenry, IL; Ogle, IL; Will, IL; Winnebago, IL; Lake, IN; Porter, IN
Hydrologic Outlook issued September 30 at 3:59AM CDT by NWS Chicago IL
ESFLOT
Several waves of rain, and possibly a few thunderstorms, are likely
through Thursday night. High moisture content in the atmosphere will
lead to periods of torrential downpours and the threat for 1 to 3
inches of rainfall on a widespread basis through Thursday night.
Repeated rounds of rain over saturated soils may lead to flooding of
low-lying and poor drainage areas as well as rises on area rivers,
including along the Rock, Fox, DuPage, Des Plaines, and Illinois
Rivers.
This outlook means that elevated water levels and potential impacts
are possible, but not yet certain. Persons should closely monitor
forecasts including the possibility of flood watches, warnings, and
advisories.
Additional statements or outlooks may be issued by this afternoon.
SAFETY and DATA MESSAGE
When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.
Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Solsberry.
Use the Radar Maps link provided to understand the trajectory of a storm.
For more official information about severe storms and how to stay safe, visit the National Weather Service's Severe Thunderstorm Safety page. We encourage you to also monitor Excessive Rainfall Forecasts on their Weather Prediction Center website.