Wisconsin and Michigan Rain Alert Issued as New Flood Risk Map Shows Heavy Weekend Rainfall Areas Residents Should Watch Closely

MICHIGAN — A new rainfall projection update is highlighting a developing flooding concern across parts of Wisconsin and Michigan this weekend, as a widespread rain system moves through the Upper Midwest.

The latest data shows steady rainfall totals building across both states, with some areas potentially seeing over 1 to 2 inches of rain, raising concerns for localized flooding.

Rainfall Totals Increasing Across the Region

Forecast projections through Sunday evening (April 12) indicate:

1 to 1.5 inches of rain expected across large portions of Wisconsin and Michigan
Localized totals up to 2 inches possible in heavier bands
A broad zone of moderate rainfall stretching from southern Wisconsin into central Michigan

Cities and areas highlighted include:

Madison, WI – around 1.43 inches
Green Bay, WI – near 0.88 inches
Wausau, WI – about 0.56 inches
Sault Ste. Marie, MI – around 0.76 inches

Meanwhile, lighter totals are expected farther south and east, including:

Lansing, MI – near 0.29 inches
Milwaukee, WI – around 0.48 inches

Flooding Risk Becoming a Concern

While these rainfall amounts may not seem extreme at first glance, the concern comes from:

Steady, prolonged rainfall over multiple days
Saturated ground conditions in some areas
Potential for heavier localized downpours within the system

This combination could lead to:

Water pooling on roads
Minor urban flooding
Rising levels in smaller streams and low-lying areas

Heaviest Rain Corridor Identified

The most concerning zone currently appears to stretch from:

South-central Wisconsin (Madison area)
Through eastern Wisconsin (Green Bay region)
Into parts of central and northern Michigan

This corridor is where the highest rainfall totals and strongest flooding signals overlap.

What to Expect This Weekend

Periods of rain developing and continuing through the weekend
Occasional heavier bursts embedded within the system
Gradual accumulation rather than one intense storm

This type of setup often increases flooding risk because rain falls consistently over time instead of quickly moving out.

Key Timing

Saturday: Rain begins spreading across Wisconsin and Michigan
Saturday Night – Sunday: Heaviest rainfall expected
Sunday Evening: System gradually begins to taper off

Final Outlook

A rainy and potentially impactful weekend is shaping up for Wisconsin and Michigan, with new forecast data pointing to localized flooding risks due to steady rainfall totals nearing or exceeding 2 inches in some areas.

Residents in Madison, Green Bay, Wausau, and parts of Michigan should stay alert, especially in flood-prone locations.

Continue following WaldronNews.com for the latest updates as this weekend rain system develops and conditions change.