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Elev 784 ft, 41.55 °N, 89.12 °W

Mendota, IL Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Mendota, IL
Elevation: 784ft
Nearby Weather Stations

Active Weather Alerts

River Flood Warning
Issued: 3:12 AM Apr. 4, 2026 – National Weather Service
...FLOOD WARNING IN EFFECT UNTIL EARLY WEDNESDAY MORNING...

* WHAT...Minor flooding is forecast.

* WHERE...Illinois River from Heritage Harbor east of Ottawa
downstream to Starved Rock Lock and Dam, including the Ottawa
gauge.

* WHEN...Until early Wednesday morning.

* IMPACTS...At 466.5 feet, Low-lying sections of Fox River Park in
Ottawa are inundated including Hudson Street River Walk.  St.
Clair Street is threatened in Ottawa.

* ADDITIONAL DETAILS...
- At 9:30 PM CDT Friday the stage was 462.8 feet.
- Forecast...The river is expected to rise above flood stage
just after midnight tonight to a crest of 466.1 feet early
Sunday afternoon. It will then fall below flood stage late
Tuesday evening.
- Flood stage is 463.0 feet.
- http://www.weather.gov/safety/flood

&&



River Flood Warning
Issued: 3:09 AM Apr. 4, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Illinois River from Starved Rock Lock and Dam downstream
to confluence with Big Bureau Creek, including the La Salle gauge.

* WHEN...Until further notice.

* ADDITIONAL DETAILS...
- At 9:45 PM CDT Friday the stage was 20.3 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 PM CDT Friday was 20.3 feet.
- Forecast...The river is expected to rise to a crest of 25.0
feet Sunday evening. It will then fall below flood stage
Friday, April 10.
- Flood stage is 20.0 feet.
- http://www.weather.gov/safety/flood

&&



River Flood Warning
Issued: 2:46 AM Apr. 4, 2026 – National Weather Service
...FLOOD WARNING NOW IN EFFECT UNTIL LATE MONDAY EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Fox River from Millington downstream to confluence with
the Illinois River, including the Dayton gauge.

* WHEN...Until late Monday evening.

* IMPACTS...At 13.0 feet, Residential structures threatened along
2062nd Road in Wedron. Water overflows low-lying banks in Dayton
and Ottawa.

* ADDITIONAL DETAILS...
- At 8:45 PM CDT Friday the stage was 12.2 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 8:45 PM CDT Friday was 12.4 feet.
- Forecast...The river is expected to rise to a crest of 13.2
feet Sunday morning. It will then fall below flood stage
Monday afternoon.
- Flood stage is 12.0 feet.
- http://www.weather.gov/safety/flood

&&



Flood Watch
Issued: 8:56 PM Apr. 3, 2026 – National Weather Service
...FLOOD WATCH IN EFFECT FROM 7 PM CDT /8 PM EDT/ THIS EVENING
THROUGH SATURDAY MORNING...

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Portions of northern and central Illinois and northwest
Indiana.

* WHEN...From 7 PM CDT  /8 PM EDT/ this evening through Saturday
morning.

* IMPACTS...Roads and streets may be flooded. Area creeks and
streams are already elevated, increasing the risk of flooding due
to additional rainfall.

* ADDITIONAL DETAILS...
- Recent rounds of heavy rainfall have left soils saturated and
stream and creek levels elevated across the area. Additional
rounds of heavy rainfall this evening and overnight may lead
to rapid run-off and an increased threat of flash flooding.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Watch for flash flooding means rapid-onset flooding is
possible, but not yet certain, based upon the latest forecasts.
Flash flooding is a dangerous situation. Persons with interests
along area rivers, creeks, and other waterways should monitor the
latest forecasts and be prepared to take action should flooding
develop.

&&

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