Forecasters say a winter storm could disrupt travel, dumping up to a foot of snow across parts of the Midwest through the holiday weekend.

A weekend storm set to bring heavy snow to 40+ states across the country this weekend is also likely to majorly disrupt travel in the Midwest. By Monday, parts of the Upper Midwest could see upwards of a foot of snow.

Metro Detroit will move from bitter cold to potentially disruptive snowfall this weekend, creating significant travel concerns during one of the busiest travel periods of the year. A developing winter storm is expected to bring widespread accumulating snow Saturday afternoon through early Sunday.

Moderate to heavy snow will spread across SE MN and NE IA overnight Friday into Saturday morning. Snow will continue on Saturday with heavy snowfall rates at times.

For those traveling for the Thanksgiving holiday, a series of winter weather alerts could have big impacts on road trip plans.

Blizzard warnings are in effect for 13 million people and cover parts of northern Wisconsin and the Upper Peninsula of Michigan, and areas east of lakes Erie and Ontario are under lake-effect snow warnings. Significant snowfall has begun, and blizzard conditions are developing as cold air pours in behind the system.

A brewing storm is expected to primarily be a rainmaker, though some snow is possible along its northern edges.