Active Weather Alerts
Tornado Warning
Issued: 12:52 AM Apr. 16, 2026 – National Weather Service
...THE TORNADO WARNING FOR CENTRAL ROCK COUNTY WILL EXPIRE AT 800 PM CDT... The storm which prompted the warning will be moving out of the area. Therefore, the warning will be allowed to expire. However, gusty winds are still possible with this thunderstorm and a downstream Severe Thunderstorm Warning has been issued. &&
Severe Thunderstorm Warning
Issued: 12:51 AM Apr. 16, 2026 – National Weather Service
The National Weather Service in Milwaukee/Sullivan has issued a * Severe Thunderstorm Warning for... Northwestern Walworth County in southeastern Wisconsin... Northeastern Rock County in south central Wisconsin... * Until 830 PM CDT. * At 750 PM CDT, a severe thunderstorm was located near Milton, moving northeast at 35 mph. HAZARD...60 mph wind gusts and quarter size hail. SOURCE...Radar indicated. IMPACT...Hail damage to vehicles is expected. Expect wind damage to roofs, siding, and trees. * Locations impacted include... Janesville, Whitewater, Elkhorn, Delavan, Milton, Richmond, La Grange, Abells Corners, Tibbets, Millard, Avalon, Emerald Grove, Johnstown Center, and Lima Center. PRECAUTIONARY/PREPAREDNESS ACTIONS... Remain alert for a possible tornado! Tornadoes can develop quickly from severe thunderstorms. If you spot a tornado go at once into the basement or small central room in a sturdy structure. For your protection move to an interior room on the lowest floor of a building. && TORNADO...POSSIBLE; HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...1.00 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Flood Watch
Issued: 12:43 AM Apr. 16, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT UNTIL 7 AM CDT THURSDAY... * WHAT...Flooding caused by excessive rainfall on a saturated ground continues to be possible. * WHERE...Portions of east central, south central, and southeast Wisconsin, including the following counties, in east central Wisconsin, Fond du Lac and Sheboygan. In south central Wisconsin, Columbia, Dane, Green, Green Lake, Iowa, Lafayette, Marquette, Rock and Sauk. In southeast Wisconsin, Dodge, Jefferson, Kenosha, Milwaukee, Ozaukee, Racine, Walworth, Washington and Waukesha. * WHEN...Until 7 AM CDT Thursday. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Creeks and streams may rise out of their banks. * ADDITIONAL DETAILS... - Flooding and flash flooding is possible from thunderstorms with heavy rain on saturated ground - http://www.weather.gov/safety/flood PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be alert for possible Flood Warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop. &&
Special Weather Statement
Issued: 12:38 AM Apr. 16, 2026 – National Weather Service
...A STRONG THUNDERSTORM WILL IMPACT SOUTHEASTERN ROCK COUNTY THROUGH 815 PM CDT... At 737 PM CDT, Doppler radar was tracking a strong thunderstorm capable of producing a landspout over South Beloit, moving northeast at 40 mph. HAZARD...Funnel Clouds, wind gusts up to 50 mph, and pea size hail. SOURCE...Radar indicated. IMPACT...Minor damage to outdoor objects is possible. Gusty winds could knock down tree limbs and blow around unsecured objects. Locations impacted include... Beloit, Clinton, Tiffany, Avalon, Shopiere, and Foxhollow. This includes the following highways... Interstate 39/90 between mile markers 180 and 187. Interstate 43 between mile markers 0 and 11. PRECAUTIONARY/PREPAREDNESS ACTIONS... If outdoors, consider seeking shelter inside a building. && LANDSPOUT...POSSIBLE; MAX HAIL SIZE...0.25 IN; MAX WIND GUST...50 MPH
Flash Flood Warning
Issued: 12:27 AM Apr. 16, 2026 – National Weather Service
The National Weather Service in Milwaukee/Sullivan has issued a * Flash Flood Warning for... Southeastern Dane County in south central Wisconsin... Green County in south central Wisconsin... Central Lafayette County in south central Wisconsin... Northern Rock County in south central Wisconsin... Jefferson County in southeastern Wisconsin... Northwestern Walworth County in southeastern Wisconsin... * Until 1030 PM CDT. * At 726 PM CDT, Doppler radar and automated rain gauges indicated thunderstorms producing heavy rain across the warned area. Up to 0.75 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar and automated gauges. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Eastern Madison, Janesville, Fitchburg, Whitewater, Stoughton, Fort Atkinson, Monroe, Verona, Oregon, Jefferson, McFarland, Monona, Lake Mills, Milton, Edgerton, Evansville, Marshall, Waterloo, Brodhead and Darlington. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR AND GAUGE INDICATED; EXPECTED RAINFALL RATE...0.75-1.5 INCHES IN 1 HOUR
River Flood Watch
Issued: 10:56 PM Apr. 15, 2026 – National Weather Service
...FLOOD WATCH NOW IN EFFECT FROM THURSDAY EVENING UNTIL FURTHER NOTICE... * WHAT...Flooding is possible. * WHERE...Rock River at Afton. * WHEN...From Thursday evening until further notice. * IMPACTS...At 11.1 feet, Floodwaters affect Riverside Park and a road in 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 5:00 PM CDT Wednesday the stage was 8.1 feet. - Forecast...Flood stage may be reached tomorrow evening. - Flood stage is 9.0 feet. - 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 Thu Fri Sat Sun Afton 9.0 8.0 8.10 5 pm 4/15 9.0 9.5 10.1 10.6 - 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 8.2 6 am 4/15 0.46 11.00 7 am 4/22 &&
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