Strong thunderstorms possible over Southeast Michigan this afternoon
DETROIT, ANN ARBOR, FLINT, LANSING — A disturbed weather pattern is developing across southeast and south-central Lower Michigan this afternoon, Wednesday, June 4, 2025, bringing the potential for isolated severe thunderstorms.
According to the Storm Prediction Center (SPC), a zone of unstable air fed by temperatures near 90°F (32°C) and elevated humidity will interact with a passing area of rain, sparking thunderstorms that may intensify rapidly. The highest threat window stretches from 3 p.m. to the evening hours, particularly across highly populated corridors like Coldwater, Jackson, Lansing, Ann Arbor, Detroit, and as far north as Flint, Saginaw, and the Thumb.
Where and when storms could hit
Forecast radar imagery from the National Weather Service projects storm development between 2 p.m. and 10 p.m.. Thunderstorms are forecast to intensify as daytime heating peaks, triggering cells capable of strong downbursts.
The SPC outlines a 5% risk (shown in brown shading on today’s forecast map) of isolated severe wind gusts exceeding 58 mph (93 km/h) — fast enough to damage trees, roofs, and power lines, though such gusts typically last only a minute or two.
This is not expected to be a widespread outbreak of severe weather. However, as meteorologist Mark Torregrossa points out, even a single isolated storm can cause significant damage and disruption where it strikes. Residents within the highlighted risk area should stay informed, as the risk remains highly localized yet dangerous.
Thunderstorm mechanics: heat + humidity + trigger
Today’s setup reflects a classic early summer severe weather scenario: hot, humid air being lifted ahead of a rain-producing system. The rising moist air forms strong convective updrafts, which can result in fast-forming, short-lived but powerful thunderstorms, especially when winds in the upper atmosphere help tilt and organize the storms.
Safety reminder
If a severe thunderstorm warning is issued or you hear thunder nearby, it’s important to move away from windows and exterior walls immediately. Even in isolated storms, wind gusts strong enough to topple trees and power lines can occur with little advance notice.
For real-time updates and radar loops, follow Michigan weather at MLive.com/weather.
