Severe

Significant threat to life or property

Illinois Severe Flood Watch | Effective 09/18/2026 19:49

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of north central and northeast Illinois, including the following counties, in north central Illinois, Boone, Ogle and Winnebago. In northeast Illinois, McHenry. * WHEN...From 1 AM CDT Saturday through Saturday afternoon. * IMPACTS...Creeks and streams may rise out of their banks. Roads and streets may be flooded. * ADDITIONAL DETAILS... - Showers and thunderstorms overnight into Saturday morning may

Wisconsin Severe Flood Watch | Effective 09/18/2026 19:49

* WHAT...Flooding and flash flooding caused by excessive rainfall are possible. * WHERE...Portions of south central and southeast Wisconsin, including the following counties, in south central Wisconsin, Dane, Green, Iowa, Lafayette and Rock. In southeast Wisconsin, Jefferson, Kenosha, Milwaukee, Racine, Walworth and Waukesha. * WHEN...From 1 AM CDT Saturday through Saturday evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations.

Wisconsin Severe Flood Watch | Effective 09/18/2026 19:49

* WHAT...Flooding and flash flooding caused by excessive rainfall are 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, Green Lake, Marquette and Sauk. In southeast Wisconsin, Dodge, Ozaukee and Washington. * WHEN...From 1 AM CDT Saturday through Saturday afternoon. * IMPACTS...Excessive runoff may result in flooding and flash

Minnesota Severe Flood Watch | Effective 09/18/2026 19:18

* WHAT...Flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of south central Minnesota, including the following county, Freeborn. * WHEN...Until 4 AM CDT Saturday. * IMPACTS...Creeks and streams may rise out of their banks. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - The threat for training thunderstorms with heavy rainfall continues this evening where repeated rounds of storms move

Nebraska Severe Severe Thunderstorm Warning | Effective 09/18/2026 19:18

At 816 PM MDT, severe thunderstorms were located along a line extending from 14 miles southwest of Agate Fossil Beds National Monument to Mitchell to 8 miles south of Hubbard Hill, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Scottsbluff, Gering, Mitchell, Terrytown, Morrill, Wildcat Hills State Recreation Area, Lake Minatare State Recreation Area, Lake

Iowa Severe Flood Watch | Effective 09/18/2026 19:22

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of north central and northeast Iowa. * WHEN...Through Saturday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. * ADDITIONAL DETAILS... - Training storms and heavy rainfall may lead to an increased potential for flash flooding. Rainfall amounts of 1 to 3 inches is expected, with locally higher amounts possible.

Nebraska Severe Severe Thunderstorm Warning | Effective 09/18/2026 19:22

SVRCYS The National Weather Service in Cheyenne has issued a * Severe Thunderstorm Warning for... Southwestern Dawes County in the Panhandle of Nebraska... Central Sioux County in the Panhandle of Nebraska... * Until 915 PM MDT. * At 822 PM MDT, severe thunderstorms were located along a line extending from near Harrison to 6 miles north of Agate Fossil Beds National Monument to 20 miles southeast of Prairie Center, moving east at 20 mph. HAZARD...60 mph wind gusts and half dollar size hail. SOURCE...Radar indicated.

South Carolina Severe Severe Thunderstorm Warning | Effective 09/18/2026 19:29

At 1028 PM EDT, a severe thunderstorm was located near Abbeville, moving south at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to trees and power lines. Locations impacted include... Abbeville, Calhoun Falls, Troy, Promised Land, Bradley, Richard B Russell Dam, and Antreville. For your protection move to an interior room on the lowest floor of a building. Continuous cloud to ground lightning is occurring with this storm.
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