Winnebago County, IL
Alerts
Alerts are listed in order of start time and level of severity. Click on the alert title to read details for each alert.
In effect from Sunday 04/19 10:26 AM CDT – Sunday 04/19 10:30 PM CDT
Issued by NWS Milwaukee/Sullivan WI
...The Flood Warning continues for the following rivers in Wisconsin...Illinois...
Milwaukee River Near Cedarburg affecting Ozaukee County.
Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties.
Rock River At Fort Atkinson affecting Jefferson County.
Rock River At Afton affecting Rock and Winnebago Counties.
Rock River At Jefferson affecting Jefferson County.
Rock River At Watertown affecting Jefferson County.
ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County.
Fox River Near Berlin affecting Green Lake County.
Crawfish River At Milford affecting Jefferson County.
Fox River Lower At Waukesha affecting Waukesha County.
Fox River Lower Near New Munster affecting Kenosha and Lake Counties.
Sugar River At Brodhead affecting Rock, Winnebago and Green Counties.
The Flood Warning is extended for the following rivers in Wisconsin
Pecatonica River At Martintown affecting Green County.
Root River Canal At Raymond affecting Racine County.
Forecast flooding changed from Moderate to Major severity and increased in duration for the following rivers in Wisconsin
Wisconsin River At Portage affecting Columbia County.
What
Minor flooding is occurring and moderate flooding is forecast.
Where
Rock River at Afton.
When
Until further notice.
Impacts
At 11.5 feet, Water surrounds at least 2 homes near the river in the Afton area. Numerous secondary roads in the Afton area are closed to traffic. Floodwaters affect South River Road on the south side of Janesville. Traxler Park off of Memorial Drive in Janesville is flooded.
Additional Details
- At 7:00 AM CDT Sunday the stage was 10.4 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:00 AM CDT Sunday was 11.3 feet. - Forecast...The river is expected to rise to 11.7 feet Friday evening. Additional rises are possible thereafter. - Flood stage is 9.0 feet. - Flood History...This crest compares to a previous crest of 11.8 feet on 04/10/1959. - http://www.weather.gov/safety/flood
What to do
Motorists should not attempt to drive around barricades or drive cars through flooded areas.
Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 1030 PM CDT.
Areas impacted
- Winnebago, IL
- Rock, WI
Tips to stay safe
A Flood Warning means that dangerous flooding is expected or already happening. Take immediate action to protect yourself and your home.
- If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
- If you are trapped in a building, move to the highest floor and call 911. Go to the roof only if necessary.
- Do not go into any room where electrical cords or outlets are under water. Stay out of water that may have electricity in it!
- If your vehicle is trapped in rapidly moving water, stay inside. If water is rising inside the vehicle, move to the roof and signal for help.
In effect from Sunday 04/19 10:26 AM CDT – Monday 04/20 4:00 PM CDT
Issued by NWS Milwaukee/Sullivan WI
...The Flood Warning continues for the following rivers in Wisconsin...Illinois...
Milwaukee River Near Cedarburg affecting Ozaukee County.
Rock River Near Lake Koshkonong affecting Rock and Jefferson Counties.
Rock River At Fort Atkinson affecting Jefferson County.
Rock River At Afton affecting Rock and Winnebago Counties.
Rock River At Jefferson affecting Jefferson County.
Rock River At Watertown affecting Jefferson County.
ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County.
Fox River Near Berlin affecting Green Lake County.
Crawfish River At Milford affecting Jefferson County.
Fox River Lower At Waukesha affecting Waukesha County.
Fox River Lower Near New Munster affecting Kenosha and Lake Counties.
Sugar River At Brodhead affecting Rock, Winnebago and Green Counties.
The Flood Warning is extended for the following rivers in Wisconsin
Pecatonica River At Martintown affecting Green County.
Root River Canal At Raymond affecting Racine County.
Forecast flooding changed from Moderate to Major severity and increased in duration for the following rivers in Wisconsin
Wisconsin River At Portage affecting Columbia County.
What
Minor flooding is occurring and minor flooding is forecast.
Where
Sugar River at Brodhead.
When
Until tomorrow afternoon.
Impacts
At 6.5 feet, There is widespread flooding of lowland and agricultural land. Downstream in the Avon Bottoms area of Rock County, there is flooding in Sugar River Park. Some roads are flooded in Avon Township, including Beloit Newark Rd, about 6 miles downstream of Brodhead. In Illinois, Winslow Rd is threatened near the river between Durand and Shirland. Low lying areas of Sugar Shores Camping Resort may be inundated.
Additional Details
- At 8:00 AM CDT Sunday the stage was 6.6 feet. - Bankfull stage is 4.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:00 AM CDT Sunday was 8.1 feet. - Forecast...The river is expected to fall below flood stage late tomorrow morning and continue falling to 2.0 feet Sunday, April 26. - Flood stage is 5.0 feet. - Flood History...This crest compares to a previous crest of 6.6 feet on 03/13/1989. - http://www.weather.gov/safety/flood
What to do
Motorists should not attempt to drive around barricades or drive cars through flooded areas.
Even 6 inches of fast-moving flood water can knock you off your feet and a depth of 2 feet will float your car. Never try to walk, swim, or drive through such swift water. If you come upon flood waters, stop, turn around and go another way.
Additional information is available at www.weather.gov.
The next statement will be issued this evening at 1030 PM CDT.
Areas impacted
- Winnebago, IL
- Green, WI
- Rock, WI
Tips to stay safe
A Flood Warning means that dangerous flooding is expected or already happening. Take immediate action to protect yourself and your home.
- If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
- If you are trapped in a building, move to the highest floor and call 911. Go to the roof only if necessary.
- Do not go into any room where electrical cords or outlets are under water. Stay out of water that may have electricity in it!
- If your vehicle is trapped in rapidly moving water, stay inside. If water is rising inside the vehicle, move to the roof and signal for help.
In effect from Sunday 04/19 10:37 AM CDT – Monday 04/20 4:45 AM CDT
Issued by NWS Chicago IL
The Flood Warning continues for the following rivers in Illinois
Pecatonica River near Shirland affecting Winnebago County.
What
Minor flooding is occurring and moderate flooding is forecasted to occur.
Where
Pecatonica River from Winnebago County line downstream to confluence with the Rock River, including the Shirland gauge.
When
Until further notice.
Impacts
At 14.0 feet, Structures threatened at Rivers Edge Campground east of Shirland.
Additional Details
- At 10:00 AM CDT Sunday, the stage was 13.8 feet. - Forecast...The river is expected to rise to a crest near 14.0 feet (Moderate Stage) this evening. It is expected to slowly fall thereafter through next week. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
What to do
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property.
These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by late tonight.
Areas impacted
- Winnebago, IL
Tips to stay safe
A Flood Warning means that dangerous flooding is expected or already happening. Take immediate action to protect yourself and your home.
- If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
- If you are trapped in a building, move to the highest floor and call 911. Go to the roof only if necessary.
- Do not go into any room where electrical cords or outlets are under water. Stay out of water that may have electricity in it!
- If your vehicle is trapped in rapidly moving water, stay inside. If water is rising inside the vehicle, move to the roof and signal for help.
In effect from Sunday 04/19 10:50 AM CDT – Sunday 04/19 7:00 PM CDT
Issued by NWS Chicago IL
The Flood Warning continues for the following rivers in Illinois
Kishwaukee River near Perryville affecting Winnebago County.
Kishwaukee River at Belvidere affecting Boone and Winnebago Counties.
What
Minor flooding is occurring and expected to continue.
Where
Kishwaukee River from County Line Road downstream to confluence with South Branch Kishwaukee River, including the Belvidere gauge.
When
Until this evening.
Impacts
At 9.5 feet, Holiday Acres Campground threatened east of Belvidere. Northwoods RV Resort is threatened in Garden Prairie.
Additional Details
- At 10:30 AM CDT Sunday, the stage was 9.3 feet. - Forecast...The river is expected to fall below flood stage late this afternoon. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
What to do
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property.
These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by this evening.
Areas impacted
- Boone, IL
- Winnebago, IL
Tips to stay safe
A Flood Warning means that dangerous flooding is expected or already happening. Take immediate action to protect yourself and your home.
- If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
- If you are trapped in a building, move to the highest floor and call 911. Go to the roof only if necessary.
- Do not go into any room where electrical cords or outlets are under water. Stay out of water that may have electricity in it!
- If your vehicle is trapped in rapidly moving water, stay inside. If water is rising inside the vehicle, move to the roof and signal for help.
In effect from Sunday 04/19 10:50 AM CDT – Tuesday 04/21 4:00 AM CDT
Issued by NWS Chicago IL
The Flood Warning continues for the following rivers in Illinois
Kishwaukee River near Perryville affecting Winnebago County.
Kishwaukee River at Belvidere affecting Boone and Winnebago Counties.
What
Minor flooding is occurring and expected to continue.
Where
Kishwaukee River from confluence with South Branch Kishwaukee River downstream to the Rock River, including the Perryville gauge.
When
Until early Tuesday morning.
Impacts
At 15.0 feet, Old Perryville Road threatened south of Rockford. Widespread inundation of agricultural land and forest land near Chicago Rockford International Airport.
Additional Details
- At 9:30 AM CDT Sunday, the stage was 14.2 feet. - Forecast...The river is expected to fall below flood stage late tomorrow night. - Flood stage is 12.0 feet. - http://www.weather.gov/safety/flood
What to do
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property.
These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by this evening.
Areas impacted
- Winnebago, IL
Tips to stay safe
A Flood Warning means that dangerous flooding is expected or already happening. Take immediate action to protect yourself and your home.
- If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
- If you are trapped in a building, move to the highest floor and call 911. Go to the roof only if necessary.
- Do not go into any room where electrical cords or outlets are under water. Stay out of water that may have electricity in it!
- If your vehicle is trapped in rapidly moving water, stay inside. If water is rising inside the vehicle, move to the roof and signal for help.
In effect from Sunday 04/19 11:10 AM CDT – Monday 04/20 5:15 AM CDT
Issued by NWS Chicago IL
The Flood Warning continues for the following rivers in Illinois
Rock River at Byron affecting Ogle County.
Rock River at Rockton affecting Winnebago County.
Rock River at Latham Park affecting Winnebago County.
What
Moderate flooding is occurring and moderate flooding is forecasted to occur.
Where
Rock River from Prairie Hill Road downstream to Swanson Road in Roscoe, including the Rockton gauge.
When
Until further notice.
Impacts
At 13.5 feet, Old River Road threatened west of Roscoe Bridge.
Additional Details
- At 10:30 AM CDT Sunday, the stage was 12.5 feet. - Forecast...The river is expected to rise to a crest of 12.8 feet tomorrow morning and remain in Moderate Flood Stage until further notice. - Flood stage is 10.0 feet. - http://www.weather.gov/safety/flood
What to do
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property.
These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by late tonight.
Areas impacted
- Winnebago, IL
Tips to stay safe
A Flood Warning means that dangerous flooding is expected or already happening. Take immediate action to protect yourself and your home.
- If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
- If you are trapped in a building, move to the highest floor and call 911. Go to the roof only if necessary.
- Do not go into any room where electrical cords or outlets are under water. Stay out of water that may have electricity in it!
- If your vehicle is trapped in rapidly moving water, stay inside. If water is rising inside the vehicle, move to the roof and signal for help.
In effect from Sunday 04/19 11:10 AM CDT – Monday 04/20 5:15 AM CDT
Issued by NWS Chicago IL
The Flood Warning continues for the following rivers in Illinois
Rock River at Byron affecting Ogle County.
Rock River at Rockton affecting Winnebago County.
Rock River at Latham Park affecting Winnebago County.
What
Moderate flooding is occurring and moderate flooding is forecasted to occur.
Where
Rock River from Swanson Road in Roscoe downstream to Shorewood Park in Loves Park, including the Latham Park gauge.
When
Until further notice.
Impacts
At 12.0 feet, low-lying sections of Shorewood Park are inundated in Loves Park.
Additional Details
- At 10:30 AM CDT Sunday, the stage was 11.9 feet. - Forecast...The river is expected to rise to a crest of 12.2 feet tomorrow evening and remain in Moderate Flood Stage until further notice. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
What to do
A Flood Warning means water levels above flood stage are imminent or may already be occurring. Persons along rivers and streams in the warned area should take immediate precautions to protect life and property.
These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by late tonight.
Areas impacted
- Winnebago, IL
Tips to stay safe
A Flood Warning means that dangerous flooding is expected or already happening. Take immediate action to protect yourself and your home.
- If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
- If you are trapped in a building, move to the highest floor and call 911. Go to the roof only if necessary.
- Do not go into any room where electrical cords or outlets are under water. Stay out of water that may have electricity in it!
- If your vehicle is trapped in rapidly moving water, stay inside. If water is rising inside the vehicle, move to the roof and signal for help.
In effect from Monday 04/20 12:00 AM CDT – Monday 04/20 9:00 AM CDT
Issued by NWS Chicago IL
What
Sub-freezing temperatures as low as 27 expected, with the coldest conditions across interior northern Illinois.
Where
Portions of central, east central, north central, and northeast Illinois and northwest Indiana.
When
From midnight CDT /1 AM EDT/ tonight to 9 AM CDT /10 AM EDT/ Monday.
Impacts
Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
What to do
Take steps now to protect tender plants from the cold.
Areas impacted
- Winnebago
- Boone
- McHenry
- Lake
- Ogle
- Lee
- De Kalb
- Kane
- DuPage
- La Salle
- Kendall
- Grundy
- Kankakee
- Livingston
- Iroquois
- Ford
- Northern Will
- Southern Will
- Eastern Will
- Lake
- Porter
- Newton
- Jasper
- Benton
Tips to stay safe
A Freeze Warning means that temperatures will drop below freezing in your area.
- Bring young or vulnerable plants indoors to protect them from the cold
- Wrap or drain outdoor pipes to prevent them from freezing
- Drain in-ground sprinkler systems
In effect from Monday 04/20 7:00 AM CDT – Wednesday 04/22 7:00 PM CDT
Issued by NWS Chicago IL
The Flood Watch continues for the following rivers in Illinois
Rock River at Dixon affecting Ogle and Lee Counties.
Rock River at Rockford (Auburn Street) affecting Winnebago County.
What
Flooding is possible.
Where
Rock River from Shorewood Park in Loves Park downstream to confluence with Kishwaukee River, including the Rockford (Auburn Street) gauge.
When
From Monday morning to Wednesday evening.
Impacts
At 5.5 feet, Low-lying sections of the Rock River Recreation Trail are threatened in Rockford. Riverview Mobile Home Park is threatened in Rockford.
Additional Details
- At 7:45 PM CDT Saturday the stage was 5.5 feet. - Forecast...Flood stage may be reached tomorrow evening. - Flood stage is 6.0 feet. - http://www.weather.gov/safety/flood
What to do
A Flood Watch means water levels above flood stage are possible, but not yet certain, based upon the latest forecasts. Persons along rivers and streams in the watch area should monitor the latest forecasts and be prepared to take action should flooding develop.
These forecasts are based on observed precipitation as well as forecast precipitation 24 hours into the future. Changes to the rainfall forecast, or any additional rainfall after 24 hours, may cause changes to these river forecasts.
Additional information is available at www.weather.gov.
The next statement will be issued by Sunday afternoon.
Areas impacted
- Winnebago
Tips to stay safe
A Flood Watch means the area may experience a dangerous flooding event, and being prepared may save lives and property.
- Be aware of low-lying areas along your travel routes that are most likely to flood.
- Check your home’s emergency supplies, and make sure all members of the household know your emergency plan.
- Stay tuned for local weather updates on the situation as it develops.
If a Flood Warning is issued, it means that dangerous flooding is expected or already happening.
- Never walk, swim, or drive through flood waters or flooded roads.
- Stay away from areas where water levels can rise rapidly, like storm drains, culverts, creeks and streams.
If your home is likely to flood, or if authorities tell you to evacuate, do so immediately and move to higher ground.
Briefing
From the forecaster
Four Day Outlook
Created by the NWS Chicago WFO
A fast-moving disturbance will bring breezy conditions and widely scattered gusty showers to the area today. Widespread subfreezing temperatures are expected outside of Chicago tonight, but a warming trend will commence next week.
Seven-day weather risk overview
Daily weather risk summary
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