Severe

Significant threat to life or property

South Dakota, , Wyoming Red Flag Warning | Effective 04/21/2026 20:36

...RED FLAG WARNING IN EFFECT LATE WEDNESDAY MORNING THROUGH EARLY EVENING ACROSS NORTHEASTERN WYOMING AND WESTERN SOUTH DAKOTA... .Hot, dry, and windy conditions will support widespread critical fire weather conditions Wednesday, mainly in the afternoon and evening. Temperatures tomorrow will range from the 80s to mid 90s with minimum humidities dropping to as low as 9%. Meanwhile, southwesterly winds will increase through the morning as a cold

Kansas Red Flag Warning | Effective 04/21/2026 20:40

...LOW RELATIVE HUMIDITY, GUSTY WINDS, AND DRY THUNDERSTORMS LEADING TO CRITICAL FIRE WEATHER CONDITIONS WEDNESDAY... * AFFECTED AREA...Fire Weather Zone 061 Hamilton, Fire Weather Zone 062 Kearny, Fire Weather Zone 074 Stanton, Fire Weather Zone 075 Grant, Fire Weather Zone 084 Morton and Fire Weather Zone 085 Stevens. * TIMING...From 1 PM CDT /noon MDT/ to 9 PM CDT /8 PM MDT/ Wednesday. * WINDS...South 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 11 percent.

Colorado High Wind Warning | Effective 04/21/2026 20:43

* WHAT...Southwest winds 30 to 40 mph with gusts up to 60 mph expected. * WHERE...Northern San Luis Valley, and Central San Luis Valley. * WHEN...From 1 PM to 8 PM MDT Wednesday. * IMPACTS...Damaging winds could blow down trees and power lines. Power outages are possible. Travel could be difficult, especially for high profile vehicles and blowing dust could produce areas of very low visibility at times. Use caution if you must drive across the San Luis Valley on Wednesday.

Wisconsin Flood Warning | Effective 04/21/2026 19:45

...The Flood Warning continues for the following rivers in Wisconsin... Rock River At Watertown affecting Jefferson County. * WHAT...Minor flooding is occurring. * WHERE...Rock River at Watertown. * WHEN...Until further notice. * IMPACTS...At 5.5 feet, there is widespread lowland flooding in rural areas around Watertown. About 6 miles upstream near Ixonia, Wayside Park on Highway 16 and Kanow Park are flooded and Rock River Road is impacted. * ADDITIONAL DETAILS... - At 9:00 PM CDT Tuesday the stage was 5.6 feet.

Illinois, Wisconsin Flood Warning | Effective 04/21/2026 19:46

...The Flood Warning continues for the following rivers in Illinois...Wisconsin... Rock River At Afton affecting Winnebago and Rock Counties. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Rock River at Afton. * WHEN...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.

Wisconsin Flood Warning | Effective 04/21/2026 19:46

...The Flood Warning continues for the following rivers in Wisconsin... Fox River Near Berlin affecting Green Lake County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River near Berlin. * WHEN...Until further notice. * IMPACTS...At 13.5 feet, Floodwaters are over the banks in parts of downtown Berlin including Riverside and Webster Street Parks. There is minor flooding in the Berlin area. * ADDITIONAL DETAILS... - At 9:00 PM CDT Tuesday the stage was 13.3 feet.

Wisconsin Flood Warning | Effective 04/21/2026 19:46

...The Flood Warning continues for the following rivers in Wisconsin... Rock River At Jefferson affecting Jefferson County. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Rock River at Jefferson. * WHEN...Until further notice. * IMPACTS...At 11.5 feet, Floodwaters affect Highway K between Jefferson and Fort Atkinson. Floodwaters affect some low lying residences and businesses in Jefferson. Water on road at Hwy 26 (Main St) and Hwy N (E Dane St) and S Center Ave. Riverview Drive

Wisconsin Flood Warning | Effective 04/21/2026 19:47

...The Flood Warning continues for the following rivers in Wisconsin... Rock River At Fort Atkinson affecting Jefferson County. * WHAT...Moderate flooding is occurring and moderate flooding is forecast. * WHERE...Rock River at Fort Atkinson. * WHEN...Until further notice. * IMPACTS...At 17.5 feet, Floodwaters partially cover low spots on Highway 106 near Rock River Park. A riverside walkway near South Water Street in downtown Fort Atkinson is closed. A few homes and

Wisconsin Flood Warning | Effective 04/21/2026 19:47

...The Flood Warning continues for the following rivers in Wisconsin... Crawfish River At Milford affecting Jefferson County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Crawfish River at Milford. * WHEN...Until Tuesday, April 28. * IMPACTS...At 8.0 feet, There is widespread flooding of agricultural land and lowland. There is widespread flooding in Riverbend Campground, about 5 miles upstream of Milford. * ADDITIONAL DETAILS... - At 9:00 PM CDT Tuesday the stage was 8.1 feet.

Wisconsin Flood Warning | Effective 04/21/2026 19:48

...The Flood Warning continues for the following rivers in Wisconsin... Fox River At Princeton affecting Green Lake County. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...Fox River at Princeton. * WHEN...Until Friday evening. * IMPACTS...At 9.5 feet, Floodwaters are in the back yards of some homes along South Farmer, Jefferson, North Mechanic and West Water Streets in Princeton. There is general minor flooding in the Princeton area. * ADDITIONAL DETAILS...
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