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Elev 791 ft, 42.17 °N, 88.29 °W

Algonquin, IL Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Algonquin, IL
Elevation: 791ft
Nearby Weather Stations

Active Weather Alerts

Flood Warning
Issued: 4:09 PM Apr. 26, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL 1 PM CDT THURSDAY...

* WHAT...Flooding caused by excessive rainfall continues.

* WHERE...A portion of northeast Illinois, including the following
counties, Lake IL and McHenry.

* WHEN...Until 100 PM CDT Thursday.

* IMPACTS...Numerous roads, yards, structures, and areas of park
land are flooding along the Fox River Chain of Lakes. Flooding
will continue through at least this week.

* ADDITIONAL DETAILS...
- At 1107 AM CDT, River gauges along the Fox River Chain of
Lakes indicate that water levels are slowly receding
following a crest in major flood stage. The latest forecast
from the Illinois Department of Natural Resources indicates
that water levels should continue to slowly recede this week.
- Water levels are expected to remain above flood stage through
this week. However, if additional heavy rainfall occurs on
Monday, flooding could persist into the first week of May.
- Some locations that will experience flooding include areas
along the Fox River Chain of Lakes, including Nippersink
Lake, Fox Lake, Pistakee Lake, Petite Lake, Lake Marie,
Channel Lake, and Lake Catherine.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&



River Flood Warning
Issued: 3:27 PM Apr. 26, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Moderate flooding is occurring and is forecast to continue.

* WHERE...Fox River from Johnsburg downstream to Red Gate Road in
St. Charles, including the Algonquin Lock & Dam tailwater gauge.

* WHEN...Until further notice.

* IMPACTS...At 12.0 feet, Structures threatened along River Street,
Johnson Street, and Maiden Lane in East Dundee. North Harrison
Street threatened near Riverside Park in Algonquin. Washington
Street threatened in Carpentersville. Water Street, Edwards
Avenue, and Elgin Avenue threatened in East Dundee. Bayview Road
threatened in Elgin. Low-lying areas of Festival Park are
threatened in Elgin.

* ADDITIONAL DETAILS...
- At 9:30 AM CDT Sunday the stage was 11.9 feet.
- Forecast...The river is expected to gradually fall over the
next several days.
- Flood stage is 9.5 feet.
- http://www.weather.gov/safety/flood

&&



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