Updated Timeline for Severe Weather in Metro Detroit on Wednesday

Mixed Precipitation Early:: Rain is expected after midnight Tuesday, potentially mixing with snow in northern suburbs (Midland-Saginaw Bay areas could see accumulation).

Two Rounds of Storms:: The first round (11 a.m. - 2 p.m.) is expected to be below severe limits. The second, more potent round is forecast between 7 p.m. Wednesday and 1 a.m. Thursday.

Severe Threats:: The primary concerns for the evening storms are heavy rain leading to flooding and strong winds. However, hail and isolated tornadoes cannot be ruled out.

Warm Temperatures Midday:: Despite the storms, temperatures are expected to rise into the mid-60s during the afternoon warm sector (2 p.m. - 7 p.m.).

Flood Watch Issued:: A Flood Watch will be in effect from 8 p.m. Wednesday to 8 a.m. Thursday for the region.

Why this matters:: Severe weather poses risks to safety and property. Understanding the timeline and potential threats allows residents to prepare effectively, minimizing potential damage and ensuring personal safety.

Midnight - 7 a.m.: Rain develops across Metro Detroit. Areas north, particularly around Midland and Saginaw Bay, may see a mix changing to snow, with potential accumulation prompting a Winter Weather Advisory.

11 a.m. - 2 p.m.: The first wave of showers and thunderstorms arrives. Current forecasts suggest these will likely stay below severe thresholds.

2 p.m. - 7 p.m.: A warm sector moves in, pushing temperatures into the mid-60s. This period might offer a deceptive lull before the main event.

7 p.m. - 1 a.m. (Thursday): The primary window for severe weather opens. Showers and thunderstorms are expected to redevelop and intensify. The main threats during this period are damaging winds and torrential rainfall leading to potential flooding. While less likely, hail and isolated tornadoes are also possible.

Check Sump Pumps: Ensure your sump pump is working correctly before the heavy rain arrives.

Secure Basements: Move valuable items from basement floors to higher ground.

Clear Gutters & Drains: Ensure gutters and nearby storm drains are clear of debris to help water flow away from your property.

Stay Informed: Monitor updates from local news (like Local 4/WDIV) and weather apps (like the 4Warn Weather app). Have a way to receive weather alerts.

Secure Outdoor Items: Tie down or bring inside loose outdoor items like patio furniture, trash cans, and trampolines that could be affected by high winds.

Be aware of the changing conditions throughout Wednesday, from early rain/snow mix to midday warmth and evening severe potential.

Flooding is a significant concern; take steps to protect basements and low-lying areas.

High winds are also a primary threat during the evening storms.

Stay updated with the latest forecasts as the timing and intensity could still shift.

Source 1: Updated timeline for severe weather in Metro Detroit on Wednesday: What to know (ClickOnDetroit/WDIV)