DETROIT (WWJ) – A storm is brewing in metro Detroit.

The National Weather Service has issued a flood watch for the entire southeast Michigan region, in effect from 5 p.m. Saturday through 5:30 p.m. Sunday.

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Forecasters say rounds of showers and thunderstorms are expected through Sunday, as an unusually moist air mass settles over lower Michigan.

Although the past couple weeks have been relatively dry, rainfall totals in excess of 2 inches will bring a threat of flooding — especially in the Detroit-area. Thunderstorms later Saturday could quickly produce torrential downpours, potentially leading to localized flash flooding.

Rainfall totals by Sunday evening are expected to range near 3 inches across much of the area, with locally higher amounts possible.

A Flood Watch means there is a potential for flooding based on current forecasts. Citizens should keep an eye on the weather and be alert for possible flood warnings. Those living in areas prone to flooding should be prepared to take action should flooding develop.

Here’s the local forecast from the CBSDetroit.com weather team:

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Saturday — Thunderstorms, accompanied by locally heavy rainfall at times. High 78F. Low 50F. Chance of rain 80%. Rainfall around 1 inch.

Sunday — Rain, heavy at times early, with scattered showers in the evening. High 53F. Low 45F. Chance of rain 100%. 1 to 2 inches of rain expected.

Monday — Partly cloudy. High 64F. Low 46F.

Tuesday — Partly cloudy skies. High near 70F. Low 51F.

Wednesday — Mostly sunny skies. High near 75F. Low near 55F.

Know before you go: Keep it tuned to WWJ Newsradio 950 for the latest forecast during traffic and weather, every 10 minutes on the 8s. See the live, local radar now at this link.

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