On July 16, 2025, southern Wisconsin experienced a line of heavy showers and strong to severe thunderstorms between approximately 12 PM and 7 PM CDT. These storms moved northeast across various counties including Fond du Lac, Dodge, Green Lake, Jefferson, and Washington, with the line extending from locations such as Fond du Lac to Hartford and Mukwonago, and from Ripon to Juneau and Elkhorn. The storms produced damaging winds, heavy rainfall, and a small potential for isolated tornadoes. Multiple rotating thunderstorms posed a tornado threat, with tornado warnings issued for parts of southern Wisconsin. The severe weather system was expected to push out over Lake Michigan after 7 PM, with lingering showers continuing into the evening. Meanwhile, the Chicago area was under a severe thunderstorm watch until 8 PM CDT, with damaging winds approaching. Authorities advised residents to heed warnings and have shelter ready in case of tornado warnings.