Flooding concerns continue overnight for Metro Detroit

We are not done with the rain yet. 

A Flood Warning is in effect overnight for the Lower and Middle Rouge River in Dearborn and Dearborn Heights, the Rouge River in Detroit and the Clinton River in Macomb county. Flooding is happening now along the riverbanks.

In addition, a Flood Watch is in effect, expiring at 4am Sunday for the potential for flooding. Heavy rains on top of saturated areas has prompted flooding concerns.

The Flood Watch includes for Bay, Genesee, Huron, Lapeer, Lenawee, Livingston, Macomb,  Midland, Monroe, Oakland, Saginaw, Sanilac, Shiawassee, St.  Clair, Tuscola, Washtenaw, and Wayne.

More rain expected in Metro Detroit

Low pressure moving along a frontal boundary will bring rain to the area again on Sunday. There is the chance for rain throughout all of next week with warm and humid conditions accompanying the storms. 

To stay up-to-date on flooding, road closures, and more this weekend - you need the FOX 2 News app for urgent updates sent to your device throughout the weekend. It's free and is available on iOS and Android devices.

RELATED: Every Wayne County freeway is underwater Saturday morning

While Detroit is the bullseye with 6 inches or more reported, the Grosse Pointes are also reporting 4 inches of rain. This is significant because if you live in an area where 4 inches or more has fallen, check your basement. 

If you're heading out take the radar with you with the FOX 2 Weather app. It's free and includes interactive radar showing you where the rain has been and, more importantly, where it's going. Get it now and be prepared - it's free to all iPhoneiPad and Android users.

In Oakland and Macomb Counties, those areas are looking at 2-3 inches of rain.

MAP: Here are all the Metro Detroit freeways closed Saturday morning

How much more rain will we get?

The rain isn't over. Friday night was just the beginning of the weekend rains with another inch or two of rain expected through Sunday evening.

Detroit could get another 1.42 inches of rain - on top of the 5 to 6 inches of rain already received. Ann Arbor could literally be in the same boat with another 1.78 inches of rain expected.

Pontiac is looking at an inch while Mount Clemens is less than an inch.

How much is an inch of rain?

One inch of rain over one square mile is equal to over 17 million gallons of water.

So if you double that, Oakland and Macomb Counties are both in the 34 million gallons of water range…in ONE SQUARE MILE!

Now, look at Wayne County, where you take 17 million gallons - but times 6. That's 102 MILLION GALLONS OF WATER per square mile. There are over 142 square miles in Detroit.

And more rain is on the way.