On August 16-18, 2025, multiple severe thunderstorm warnings, special weather statements, flash flood warnings, and tornado warnings were issued across parts of Wisconsin, Illinois, Indiana, Minnesota, Colorado, Nevada, and New Jersey. The National Weather Service offices in Milwaukee, Chicago, Reno, Boulder, Mount Holly, and the Twin Cities coordinated these alerts. Key affected areas in Wisconsin included Fond du Lac, Madison, Janesville, Waukesha, and Milwaukee, with warnings extending into Illinois cities such as Aurora, Naperville, Joliet, Chicago, and DeKalb, as well as Indiana locations like Gary and Hammond. Severe storms featured damaging winds with gusts up to 70 mph, hail up to golf ball size, and isolated tornado threats. Flash flood warnings were issued for urban and flood-prone areas, with rainfall rates possibly reaching 2 inches per hour and localized totals of 2-5 inches in short periods. The Chicago region faced a flood watch through late night on August 18, coinciding with the first day of school for many students. In Colorado, severe storms were expected with large hail and damaging winds, including warnings for Lincoln and Adams counties. Nevada saw special weather statements for Washoe and Lyon counties. Marine warnings were issued for coastal waters near New Jersey. The weather events prompted ongoing monitoring and advisories for residents to stay alert for rapidly changing conditions and potential severe weather impacts.