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4Warn Weather Alert issued for Wednesday morning in Metro Detroit -- What this means

Multiple counties under flood watch

4Warn Weather Alert. (WDIV)

A 4Warn Weather Alert has been issued for Wednesday morning in Metro Detroit following overnight thunderstorms.

A Flood Watch is in effect for most of Southeast Michigan through 2 p.m. on March 11, prompting a 4Warn Weather Alert as rounds of rain and storms move across the region during the morning commute and through midday.

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Full forecast --> Wild weather: Heavy rain leading to flood concerns in Metro Detroit

What is a 4Warn Weather Alert?

We issue a 4Warn Weather Alert when we’re expecting weather conditions that will be inconvenient to our viewers.

Why did we issue an alert for Wednesday morning?

Early Wednesday morning, thunderstorms were rolling through Metro Detroit. While severe weather was a possibility overnight, most storms in Southeast Michigan remained below severe limits. Stronger storms developed across West Michigan earlier, and a Severe Thunderstorm Warning was issued for the Saginaw area.

Meanwhile, parts of the Thumb and Mid-Michigan are dealing with freezing rain and icy conditions, while Northern Michigan is under Ice Storm Warnings, including Alpena.

The biggest concern in Southeast Michigan Wednesday morning is heavy rainfall.

Several rounds of rain could produce localized flooding, especially in areas that typically collect water, such as low-lying neighborhoods, underpasses and roads with poor drainage.

A Flood Watch is in effect for most of Southeast Michigan through 2 p.m. Wednesday, March 11, 2026. (WDIV)

Flood safety tips

Drivers should be cautious of standing water on roadways. Even shallow water can hide hazards or stall vehicles Here is an important rule during flood events: Turn around, don’t drown.

Just a foot of moving water can sweep a vehicle away. Drivers should never attempt to cross flooded roadways and should seek alternate routes if water covers the road.

Just a foot of moving water can sweep a vehicle away. Drivers should never attempt to cross flooded roadways and should seek alternate routes if water covers the road. (WDIV)

Heavy rain can also lead to basement flooding in some homes. Residents are encouraged to check sump pumps, clear nearby drains if possible and monitor lower levels of their homes for water intrusion during prolonged rainfall.


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