Severe · Flood WatchActive alert

Flood Watch issued September 19 at 3:39AM CDT until September 19 at

Affecting Winnebago; Boone; McHenry; Ogle

In effect until: Sep 19, 2026, 4:45 PM

Winnebago; Boone; McHenry; Ogle

Possible impact zone; conditions develop through 4:45 PM.

Avoid flooded areas. Move to higher ground if water is rising near you.

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Read the original bulletin (official text)

* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of north central and northeast Illinois, including
the following counties, in north central Illinois, Boone, Ogle and
Winnebago. In northeast Illinois, McHenry.

* WHEN...Until 1 PM CDT this afternoon.

* IMPACTS...Creeks and streams may rise out of their banks. Roads and
streets may be flooded.

* ADDITIONAL DETAILS...
- Showers and thunderstorms will produce heavy rain this morning
which may cause localized flash flooding. Additional showers and
thunderstorms may produce heavy rain and localized flash flooding
tonight when another flood watch for flash flooding may be
needed.
- http://www.weather.gov/safety/flood

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued September 19 at 3:39AM CDT until September 19 at

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