Marquette, Michigan – Residents across Michigan’s Upper Peninsula should brace for multiple rounds of heavy thunderstorms and possible flash flooding through late Thursday night, with the greatest risk west of Marquette. Roads, utilities, and evening plans could be disrupted by excessive rainfall, large hail, and damaging winds.
According to the National Weather Service in Marquette, scattered thunderstorms will sweep through Ironwood, Ontonagon, and Marquette starting midday Tuesday, ramping up overnight and persisting through Thursday. Severe storms are most likely from Tuesday evening into Wednesday morning, with storm probabilities peaking above 75% in communities including Houghton, L’Anse, and Iron River.
Travelers should expect water over roadways and the potential for sudden power outages. Residents are urged to avoid flooded routes, secure outdoor items, and charge devices ahead of the strongest storms. Marquette and Escanaba could see repeated downpours, with localized flash flooding possible—especially in low-lying areas and along US-2 and M-28.
Isolated severe storms may also trigger large hail and damaging gusts, particularly in western counties. The greatest period of risk spans Tuesday afternoon through late Thursday. This weather pattern is similar to last summer’s multi-day severe event, which led to widespread power disruptions.
Thunderstorm warnings remain in effect for the entire Upper Peninsula, and additional alerts are possible as the system evolves. Stay tuned for updates and local advisories.
