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Elev 883 ft, 42.4 °N, 88.34 °W

Wonder Lake, IL Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Wonder Lake, IL
Elevation: 883ft
Nearby Weather Stations

Active Weather Alerts

Flood Warning
Issued: 3:45 PM Apr. 25, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

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

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

* WHEN...Until Further Notice.

* 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 next week.

* ADDITIONAL DETAILS...
- At 1040 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 into next
week.
- Water levels are expected to remain above flood stage through
most of this coming 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: 3:19 PM Apr. 25, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Major flooding is occurring and is forecasted to fall to
moderate today.

* 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 Saturday the stage was 12.0 feet.
- Forecast...The river has crested and will began to slowly
fall, but will remain above flood stage through at least next
week.
- Flood stage is 9.5 feet.
- http://www.weather.gov/safety/flood

&&



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