Detroit, Michigan – Drivers across southern Michigan should prepare for slick roads and the potential for flash flooding late Wednesday night as a low-pressure system brings widespread rainfall and thunderstorms to the region.
According to the National Weather Service in Detroit/Pontiac, the heaviest rain will fall south of the I-69 corridor, with a uniform swath of 0.25 to 1 inch of rain expected through early Thursday morning. Thunderstorms embedded within the system could intensify rainfall in localized areas, particularly near the Ohio border and along I-94.
Cities at higher risk include Ann Arbor, Monroe, Adrian, and Detroit’s southern suburbs. The overnight rain could lead to standing water on roads, especially in low-lying areas and urban centers. Commuters are advised to avoid driving through flooded intersections and to allow extra travel time Thursday morning.
Unlike spotty downpours, this system is expected to produce consistent rainfall across the southern half of the state, increasing the likelihood of drainage issues and ponding. Emergency management officials urge residents to clear storm drains and keep phones charged in case of power outages.
The rain threat tapers off by late Thursday morning, but more advisories could be issued if storm cells linger longer than expected.
