Flood Warning
Flood Statement
National Weather Service Milwaukee/Sullivan WI
405 PM CDT Tue May 5 2026
...The Flood Warning continues for the following rivers in
Wisconsin...
Rock River Near Lake Koshkonong affecting Jefferson and Rock
Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Caution is urged when walking near riverbanks.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 415 AM CDT.
&&
WIC055-105-060915-
/O.CON.KMKX.FL.W.0035.000000T0000Z-260506T1200Z/
/NVLW3.2.ER.260418T1425Z.260424T2045Z.260506T0600Z.NO/
405 PM CDT Tue May 5 2026
...FLOOD WARNING REMAINS IN EFFECT UNTIL TOMORROW MORNING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Rock River near Lake Koshkonong.
* WHEN...Until tomorrow morning.
* IMPACTS...At 10.0 feet, Floodwaters affect homes and boat docks in
the Blackhawk Island area of Lake Koshkonong on the north side of
the lake. Floodwaters spread over low spots on Blackhawk Island
Road in the area where the Rock River enters the lake.
* ADDITIONAL DETAILS...
- At 3:00 PM CDT Tuesday the stage was 10.0 feet.
- Bankfull stage is 9.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:00 PM CDT Tuesday was 10.2 feet.
- Forecast...The river is expected to fall below flood stage
just after midnight tonight and continue falling to 8.8 feet
Tuesday, May 12.
- Flood stage is 10.0 feet.
- Flood History...This crest compares to a previous crest of
10.0 feet on 06/30/2013.
- 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 7 pm...
Location stage stage stage/time Wed Thu Fri Sat
Lake Koshkonong 10.0 9.0 10.03 3 pm 5/05 9.8 9.7 9.5 9.3
- 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 11.12 3 pm 4/28 -0.13 10.00 1 am 5/06
&&
LAT...LON 4293 8894 4287 8886 4283 8892 4281 8900
4285 8907 4290 8902
$$
QUIGLEY
Flood Statement
National Weather Service Milwaukee/Sullivan WI
404 PM CDT Tue May 5 2026
...The Flood Warning continues for the following rivers in
Illinois...Wisconsin...
Rock River At Afton affecting Winnebago and Rock Counties.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Motorists should not attempt to drive around barricades or drive
cars through flooded areas.
Caution is urged when walking near riverbanks.
Additional information is available at www.weather.gov.
The next statement will be issued late tonight at 415 AM CDT.
&&
ILC201-WIC105-060915-
/O.CON.KMKX.FL.W.0032.000000T0000Z-260508T1200Z/
/AFTW3.2.ER.260416T1717Z.260418T0645Z.260508T0600Z.NO/
404 PM CDT Tue May 5 2026
...FLOOD WARNING REMAINS IN EFFECT UNTIL FRIDAY MORNING...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Rock River at Afton.
* WHEN...Until Friday morning.
* IMPACTS...At 9.0 feet, Floodwaters affect property of a home on
South Christian Road on the east side of the river in the Afton
area. There is minor erosional flood damage to lowland and
agricultural land in the Afton and Janesville areas.
* ADDITIONAL DETAILS...
- At 3:00 PM CDT Tuesday the stage was 9.3 feet.
- Bankfull stage is 8.0 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 3:00 PM CDT Tuesday was 9.5 feet.
- Forecast...The river is expected to fall below flood stage
early Friday morning and continue falling to 8.0 feet
Tuesday, May 12.
- Flood stage is 9.0 feet.
- Flood History...This crest compares to a previous crest of
9.3 feet on 05/02/1921.
- 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 7 pm...
Location stage stage stage/time Wed Thu Fri Sat
Afton 9.0 8.0 9.31 3 pm 5/05 9.2 9.0 8.8 8.6
- 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 10.41 2 pm 4/29 -0.15 9.30 7 am 5/06
&&
LAT...LON 4274 8910 4274 8903 4265 8899 4248 8902
4248 8910 4261 8909
$$
QUIGLEY
Flood Statement
National Weather Service Lincoln IL
1011 AM CDT Tue May 5 2026
...The Flood Warning continues for the following rivers in
Illinois...
Illinois River near Havana affecting Mason, Fulton and Cass
Counties.
Illinois River at Beardstown affecting Brown, Morgan, Cass and
Schuyler Counties.
.The following forecasts are based on observed precipitation, soil
moisture conditions, and forecast precipitation.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Persons with interests along this river need to remain aware of the
latest forecasts and associated flood risk for their area. Stay
tuned for further updates on this flooding situation.
Additional information is available at www.weather.gov.
&&
ILC017-057-125-060715-
/O.CON.KILX.FL.W.0005.000000T0000Z-000000T0000Z/
/HAVI2.1.ER.260405T1430Z.260424T0130Z.000000T0000Z.NO/
1011 AM CDT Tue May 5 2026
...FLOOD WARNING REMAINS IN EFFECT UNTIL FURTHER NOTICE...
* WHAT...Minor flooding is occurring and minor flooding is forecast.
* WHERE...Illinois River near Havana.
* WHEN...Until further notice.
* ADDITIONAL DETAILS...
- At 9:45 AM CDT Tuesday the stage was 16.1 feet.
- Recent Activity...The maximum river stage in the 24 hours
ending at 9:45 AM CDT Tuesday was 16.3 feet.
- Forecast...The river is expected to fall to 14.2 feet
Tuesday, May 12.
- Flood stage is 14.0 feet.
- http://www.weather.gov/safety/flood
&&
Fld Observed Forecasts (1 pm CDT)
Location Stg Stg Day/Time Wed Thu Fri
Illinois River
Havana 14.0 16.1 Tue 9 am CDT 15.9 15.7 15.4
&&
LAT...LON 4053 8988 4047 8980 4034 9002 4012 9017
4018 9023 4039 9010
$$
Frost Advisory
URGENT - WEATHER MESSAGE
National Weather Service Milwaukee/Sullivan WI
113 PM CDT Tue May 5 2026
WIZ046-047-051-052-056>059-062>065-067>069-060215-
/O.NEW.KMKX.FR.Y.0004.260506T0600Z-260506T1300Z/
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Iowa-Dane-Jefferson-Waukesha-Lafayette-Green-Rock-
Including the cities of Oostburg, Brodhead, Reedsburg, Fond Du
Lac, Prairie Du Sac, Germantown, Barneveld, Waukesha, Lake
Wisconsin, Beaver Dam, Muskego, Berlin, Darlington,
Blanchardville, Beloit, Hartford, Howards Grove, Fort Atkinson,
Brookfield, Benton, Princeton, Belmont, Sauk City, Oxford,
Portage, Madison, Jefferson, Menomonee Falls, Westfield, Baraboo,
Dodgeville, Sheboygan Falls, New Berlin, Markesan, Mayville,
Lodi, West Bend, Plymouth, Shullsburg, Monroe, Neshkoro, Argyle,
Montello, Watertown, Endeavor, Columbus, Janesville, Waupun, and
Mineral Point
113 PM CDT Tue May 5 2026
...FROST ADVISORY IN EFFECT FROM 1 AM TO 8 AM CDT WEDNESDAY...
* WHAT...Temperatures in the low 30s will result in frost formation,
especially in low-lying areas.
* WHERE...Portions of east central, south central, and southeast
Wisconsin.
* WHEN...From 1 AM to 8 AM CDT Wednesday.
* IMPACTS...Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Take steps now to protect tender plants from the cold.
&&
$$
HEEREN
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Indianapolis IN
322 PM EDT Tue May 5 2026
INZ021-028>031-035>049-051>057-060>065-067>072-061930-
Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone-
Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam-
Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby-
Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess-
Martin-Lawrence-Jackson-Jennings-
322 PM EDT Tue May 5 2026
This hazardous weather outlook is for central Indiana.
.DAY ONE...Through Tonight.
Thunderstorms are possible at times tonight. Severe weather is not
expected. Heavier rain today could lead to localized flooding,
particularly across the south. Lightning is a threat with any
thunderstorm.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
More thunderstorms are possible on Friday night and again on Sunday.
It is too soon to determine if these storms will be severe.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated.
&&
More information, along with other weather, hydrological and climate
information can be found at http://weather.gov/ind
$$
Hazardous Weather Outlook
National Weather Service Lincoln IL
207 PM CDT Tue May 5 2026
ILZ044>046-052>057-061>063-066>068-071>073-061915-
Piatt-Champaign-Vermilion-Christian-Macon-Moultrie-Douglas-Coles-
Edgar-Shelby-Cumberland-Clark-Effingham-Jasper-Crawford-Clay-
Richland-Lawrence-
207 PM CDT Tue May 5 2026
This Hazardous Weather Outlook is for central Illinois, east
central Illinois and southeast Illinois.
.DAY ONE...Tonight.
Periods of showers and a few thunderstorms are likely (70-90%
chance) this evening, but severe weather is not expected.
.DAYS TWO THROUGH SEVEN...Wednesday through Monday.
There is a low chance for thunderstorms Friday, and again Saturday
night. Severe weather is not expected at this time.
Minor flooding on the Little Wabash River near Clay City will
continue for several more days.
.SPOTTER INFORMATION STATEMENT...
Spotter activation is not anticipated tonight.
$$
25
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
142 PM CDT Tue May 5 2026
WIZ046-047-051-052-056>060-062>072-061845-
Marquette-Green Lake-Fond du Lac-Sheboygan-Sauk-Columbia-Dodge-
Washington-Ozaukee-Iowa-Dane-Jefferson-Waukesha-Milwaukee-
Lafayette-Green-Rock-Walworth-Racine-Kenosha-
142 PM CDT Tue May 5 2026
This Hazardous Weather Outlook is for portions of east central
Wisconsin, south central Wisconsin and southeast Wisconsin.
.DAY ONE...Tonight
Frost expected along and west of the Kettle Moraine tonight.
.DAYS TWO THROUGH SEVEN...Wednesday through Tuesday
Frost possible inland away from Lake Michigan again Wednesday
night and Thursday night.
.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed.
$$
