The biggest winter weather event of the 2018-19 season so far in Southwest Michigan is on its way for the weekend and will start with heavy snow before ending with subzero temps by Monday morning.

The National Weather Service has issued a Winter Storm Warning for Berrien, Branch, Cass, Hillsdale and St. Joseph counties in effect through Saturday afternoon. A Winter Weather Advisory has been issued for Allegan, Barry, Calhoun, Eaton, Jackson, Kalamazoo and Van Buren counties through Saturday afternoon.

The worst of the storm is expected to happen in the counties along the Michigan/Indiana border with total accumulations of 4 to 7" and isolated areas with higher amounts. Moderate to heavy snow, combined with gusty northeast winds to 25 to 35 mph on Saturday into Saturday evening will create hazardous travel conditions. Along I-94 and to the north, total snow accumulations from 3 to 5" of snow is expected.

Once the storm moves out of the area, very frigid air will start to blanket the region with high temperatures Sunday only reaching the mid teens. Low temps into Monday morning are expected to be below zero. Some areas could get as low as -10 degrees.