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Elev 974 ft, 42.63 °N, 88.87 °W

Avalon, WI Severe Weather Alertstar_ratehome

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Current Station
Personal Weather Station
Location: Avalon, WI
Elevation: 974ft
Nearby Weather Stations

Active Weather Alerts

River Flood Warning
Issued: 8:26 PM Apr. 29, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

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

* WHERE...Rock River at Afton.

* WHEN...Until further notice.

* IMPACTS...At 10.5 feet, Floodwaters affect Riverside Park on the
north side of Janesville and South River Road on the south side of
Janesville. Floodwaters affect low spots on South River Rd on the
south side of Janesville. Floodwaters affect a home on South
Christian Rd on the east side of the river in the Afton area.
There is extensive lowland and agricultural land flooding in the
Afton and Janesville areas.

* ADDITIONAL DETAILS...
- At 3:00 PM CDT Wednesday the stage was 10.4 feet.
- Bankfull stage is 8.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:00 PM CDT Wednesday was 10.4 feet.
- Forecast...The river is expected to fall to 9.1 feet
Wednesday, May 06.
- Flood stage is 9.0 feet.
- Flood History...This crest compares to a previous crest of
10.4 feet on 03/29/1952.
- http://www.weather.gov/safety/flood

&&

River forecasts are available for some but not all river gaging
locations. The 7 day river forecast takes into account past
precipitation, soil moisture conditions, and predicted
precipitation for the basin. Precipitation is for the next 24 hours
in the future from April through September and for 48 hours in the
future from October through March.

(Stages in ft.)       Bank-       Latest         Forecast stages
-               Flood full       observed        ...for 1 pm...
Location        stage stage     stage/time    Thu  Fri  Sat  Sun
Afton           9.0   8.0   10.40 3 pm 4/29   10.3 10.1 10.0 9.8

-                    Highest       24 hour change
-                    observed      in river stage
-                    stage in        (ft.) up to     Highest stage
-                    the last      latest observed    forecast in
-                     7 days            stage         next 7 days
Afton           10.77 3 pm 4/22         0.05       10.40 1 pm 4/29


&&



River Flood Warning
Issued: 8:26 PM Apr. 29, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...

* WHAT...Minor flooding is occurring.

* WHERE...Rock River at Newville.

* WHEN...Until further notice.

* IMPACTS...At 7.5 feet, Floodwaters surround some homes near East
Mallwood Drive and are into yards and roads across eastern
Newville. Floodwaters affect a riverside restaurant and its
parking lot on the south side of the river.

* ADDITIONAL DETAILS...
- At 3:00 PM CDT Wednesday the stage was 7.2 feet.
- Bankfull stage is 5.5 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:00 PM CDT Wednesday was 7.2 feet.
- Forecast...No forecast is available for this location.
- Flood stage is 6.5 feet.
- Flood History...This crest compares to a previous crest of
7.1 feet on 10/14/2019.
- http://www.weather.gov/safety/flood

&&

River forecasts are available for some but not all river gaging
locations. The 7 day river forecast takes into account past
precipitation, soil moisture conditions, and predicted
precipitation for the basin. Precipitation is for the next 24 hours
in the future from April through September and for 48 hours in the
future from October through March.

(Stages in ft.)       Bank-       Latest         Forecast stages
-               Flood full       observed        ...for 5 pm...
Location        stage stage     stage/time    Thu  Fri  Sat  Sun
Newville        6.5   5.5   7.15  3 pm 4/29   not a forecast point

-                    Highest       24 hour change
-                    observed      in river stage
-                    stage in        (ft.) up to     Highest stage
-                    the last      latest observed    forecast in
-                     7 days            stage         next 7 days
Newville        7.61  1 pm 4/27        -0.04         Not Available


&&



River Flood Warning
Issued: 8:26 PM Apr. 29, 2026 – National Weather Service
...FLOOD WARNING REMAINS IN EFFECT UNTIL TUESDAY MORNING...

* WHAT...Moderate flooding is occurring and moderate flooding is
forecast.

* WHERE...Rock River near Lake Koshkonong.

* WHEN...Until Tuesday morning.

* IMPACTS...At 11.0 feet, In the Town of Lake Koshkonong,
floodwaters affect Vets Lane, Blackhawk Island Road, and Oxbow
Bend Road. There is widespread flooding of roads and docks in the
Town of Koshkonong and Town of Sumner including Vets Lane,
Blackhawk Island Road and Oxbow Bend Road.

* ADDITIONAL DETAILS...
- At 3:00 PM CDT Wednesday the stage was 11.0 feet.
- Bankfull stage is 9.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:00 PM CDT Wednesday was 11.1 feet.
- Forecast...The river is expected to fall below flood stage
early Tuesday morning and continue falling to 9.7 feet
Wednesday, May 06.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
11.0 feet on 06/07/2000.
- http://www.weather.gov/safety/flood

&&

River forecasts are available for some but not all river gaging
locations. The 7 day river forecast takes into account past
precipitation, soil moisture conditions, and predicted
precipitation for the basin. Precipitation is for the next 24 hours
in the future from April through September and for 48 hours in the
future from October through March.

(Stages in ft.)       Bank-       Latest         Forecast stages
-               Flood full       observed        ...for 1 pm...
Location        stage stage     stage/time    Thu  Fri  Sat  Sun
Lake Koshkonong 10.0  9.0   11.00 3 pm 4/29   10.9 10.7 10.5 10.3

-                    Highest       24 hour change
-                    observed      in river stage
-                    stage in        (ft.) up to     Highest stage
-                    the last      latest observed    forecast in
-                     7 days            stage         next 7 days
Lake Koshkonong 11.42 3 pm 4/24        -0.12       11.00 7 pm 4/29


&&



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