We still have weeks to go before the winter season officially starts, but weather forecasters have already been taking a deep dive into the future, analyzing the atmospheric trends and issuing early predictions on how cold and snowy it might be.

Snow made its first appearance Thursday and Friday across portions of the eastern U.S. Here's what that means for the winter forecast.

The region is under a winter storm warning until 7 p.m. Sunday. High end potential snowfall includes accumulations up to 20-30 inches in Grand Marais and Munising, according to the National Weather Service.