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 7:54 PM CDT – Tuesday 04/21 3:24 AM CDT
Issued by NWS Chicago IL
The Flood Warning continues for the following rivers in Illinois
Kishwaukee River near Perryville affecting Winnebago County.
For the Kishwaukee River...including Perryville...Minor flooding is forecast.
What
Minor flooding is occurring and forecasted 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 13.0 feet, Roadways threatened at Blackhawk Valley Campground south of Rockford.
Additional Details
- At 7:30 PM CDT Sunday the stage was 13.6 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 7:30 PM CDT Sunday was 14.2 feet. - Forecast...The river is expected to fall below flood stage tomorrow evening. - 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 Monday afternoon.
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 8:00 PM CDT – Monday 04/20 2:00 PM 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 forecasted to continue.
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 11.5 feet, Queen Oaks Drive is threatened in Machesney Park. Lower-level of elevated structures threatened along Harbor Lights Court west of Machesney Park. Ritter Drive is threatened north of Baldwin Drive in Machesney Park.
Additional Details
- At 7:30 PM CDT Sunday the stage was 11.7 feet. - Forecast...The river is expected to remain nearly steady through at least the middle of the week. - 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 Monday afternoon.
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 8:00 PM CDT – Monday 04/20 2:00 PM 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 forecasted to continue.
Where
Rock River from Prairie Hill Road downstream to Swanson Road in Roscoe, including the Rockton gauge.
When
Until further notice.
Impacts
At 12.0 feet, Multiple low-lying roads threatened along the river in Roscoe.
Additional Details
- At 7:30 PM CDT Sunday the stage was 12.3 feet. - Forecast...The river is expected to remain nearly steady through at least the middle of the week. - 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 Monday afternoon.
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 8:02 PM CDT – Monday 04/20 2:15 PM 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.
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 7:00 PM CDT Sunday the stage was 14.0 feet. - Forecast...The river is expected to rise to a crest of 14.1 feet tomorrow morning. It will then slowly fall throughout the 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 Monday afternoon.
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 5:00 AM CDT – Monday 04/20 5:00 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 At Newville affecting Rock County.
Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties.
Rock River At Fort Atkinson affecting Jefferson County.
Rock River At Afton affecting Winnebago and Rock 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 Lake and Kenosha Counties.
Pecatonica River At Martintown affecting Green County.
Wisconsin River At Portage affecting Columbia County.
...The Flood Warning is extended for the following rivers in Illinois...Wisconsin...
Sugar River At Brodhead affecting Winnebago, Rock and Green Counties.
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 3:00 AM CDT Monday the stage was 10.3 feet. - Bankfull stage is 8.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 3:00 AM CDT Monday was 10.5 feet. - Forecast...The river is expected to rise to 11.4 feet early Friday afternoon. Additional rises are possible thereafter. - Flood stage is 9.0 feet. - http://www.weather.gov/safety/flood
What to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
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.
Motorists should not attempt to drive around barricades or drive cars through flooded areas.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 500 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 Monday 04/20 5:00 AM CDT – Tuesday 04/21 12:20 AM 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 At Newville affecting Rock County.
Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties.
Rock River At Fort Atkinson affecting Jefferson County.
Rock River At Afton affecting Winnebago and Rock 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 Lake and Kenosha Counties.
Pecatonica River At Martintown affecting Green County.
Wisconsin River At Portage affecting Columbia County.
...The Flood Warning is extended for the following rivers in Illinois...Wisconsin...
Sugar River At Brodhead affecting Winnebago, Rock and Green Counties.
What
Minor flooding is occurring and minor flooding is forecast.
Where
Sugar River at Brodhead.
When
Until just after midnight tonight.
Impacts
At 6.0 feet, Some roads are flooded about 6 miles downstream in Avon Township of Rock County, including Beloit Newark Rd. In the Avon Bottoms area of Rock County, flooding is occurring in Sugar River Park. 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 4:00 AM CDT Monday the stage was 6.0 feet. - Bankfull stage is 4.5 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 4:00 AM CDT Monday was 6.7 feet. - Forecast...The river is expected to fall below flood stage this evening and continue falling to 2.0 feet Sunday evening. - Flood stage is 5.0 feet. - http://www.weather.gov/safety/flood
What to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
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.
Motorists should not attempt to drive around barricades or drive cars through flooded areas.
Additional information is available at www.weather.gov.
The next statement will be issued this afternoon at 500 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 Monday 04/20 2:34 AM CDT – Monday 04/20 9:00 AM CDT
Issued by NWS Chicago IL
What
Sub-freezing temperatures as low as 26 expected, with the coldest conditions across interior northern Illinois.
Where
Portions of central, east central, north central, and northeast Illinois and northwest Indiana.
When
Until 9 AM CDT /10 AM EDT/ this morning.
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 Cook
- Southern Cook
- 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
Briefing
From the forecaster
The Week Ahead
Created by the NWS Chicago WFO
Warmer conditions will develop this week (with the exception of Wednesday near the lake). There is a chance of thunderstorms mainly near/south of I-80 Tuesday evening. Thereafter, greater shower/storm chances will arrive with another cold front towards the end of the week.
Seven-day weather risk overview
Daily weather risk summary
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