Green Bay, Wis. – Brief funnel clouds could be spotted over parts of northeast Wisconsin and the Upper Peninsula of Michigan through early evening Monday as an upper-level disturbance moves through the region.
According to the National Weather Service offices in Green Bay and Marquette, conditions are favorable for the development of cold air funnel clouds, which typically form beneath isolated showers or weak thunderstorms. These funnels generally remain aloft and dissipate quickly, though on rare occasions, they may touch the ground as weak tornadoes or landspouts.
Areas under the greatest potential include Marinette, Oconto, Menominee, Shawano and Door counties in Wisconsin, and the cities of Marquette, Escanaba, Gladstone, and Iron Mountain in Michigan. The phenomena are not associated with severe weather systems and are usually not dangerous, but residents are advised to seek indoor shelter if a funnel cloud approaches.
Drivers should remain alert, especially on rural highways like U.S. 41 and M-35, as brief gusts or reduced visibility may occur with passing showers.
This threat is expected to diminish after sunset, but additional statements could be issued if conditions persist.