42°50'N / 88°55'O / Altitude 252 m / 04:04 01/05/2026, America/Chicago (UTC-5)
De: 30/04/2026, 21:56
Para: 01/05/2026, 10:00
...The Flood Warning continues for the following rivers in Wisconsin...Illinois... Rock River Near Lake Koshkonong affecting Jefferson and Rock Counties. Rock River At Afton affecting Winnebago and Rock Counties. Rock River At Newville affecting Rock County. Rock River At Fort Atkinson affecting Jefferson County. ROCK RIVER near LEBANON-3 E-HWY MM BRIDGE affecting Dodge County. ...The Flood Warning is extended for the following rivers in Wisconsin... Rock River At Jefferson affecting Jefferson County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River near Lake Koshkonong. * WHEN...Until early 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 9:00 PM CDT Thursday the stage was 10.8 feet. - Bankfull stage is 9.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 PM CDT Thursday was 10.9 feet. - Forecast...The river is expected to fall below flood stage Monday evening and continue falling to 9.4 feet Thursday, May 07. - Flood stage is 10.0 feet. - Flood History...This crest compares to a previous crest of 11.0 feet on 10/15/2019. - http://www.weather.gov/safety/flood
Jefferson, WI; Rock, WI
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 Friday morning at 1000 AM CDT.
NWS Milwaukee/Sullivan WI
30/04/2026, 21:56
De: 01/05/2026, 01:42
Para: 01/05/2026, 09:45
* WHAT...For the Frost Advisory, temperatures as low as 32 will result in frost formation. For the Freeze Warning, sub-freezing temperatures as low as 29 expected. * WHERE...Fond du Lac, Dane, Green, Iowa, Lafayette, Rock, Dodge, and Jefferson Counties. * WHEN...For the Frost Advisory, until 8 AM CDT this morning. For the Freeze Warning, from midnight tonight to 8 AM CDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Rock,RockTake steps now to protect tender plants from the cold.NWS Milwaukee/Sullivan WI01/05/2026, 01:42De: 01/05/2026, 01:42
Para: 01/05/2026, 09:45
* WHAT...For the Frost Advisory, temperatures as low as 32 will result in frost formation. For the Freeze Warning, sub-freezing temperatures as low as 29 expected. * WHERE...Fond du Lac, Dane, Green, Iowa, Lafayette, Rock, Dodge, and Jefferson Counties. * WHEN...For the Frost Advisory, until 8 AM CDT this morning. For the Freeze Warning, from midnight tonight to 8 AM CDT Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered.
Rock,RockTake steps now to protect tender plants from the cold.NWS Milwaukee/Sullivan WI01/05/2026, 01:42