Winter Weather Advisory for accumulating snow due to lake effect snow showers tonight into Sunday for Illinois and Indiana counties adjacent to Lake Michigan
Update 6:45PM CST…
Bands of southward-moving lake-effect snow will swing across northeast Illinois overnight, and while heaviest accumulations are likely right along and just inland of the Illinois Lake Michigan shoreline, snow showers with minor accumulations are likely farther inland. Two to 5-inch accumulations are likely in Illinois Lake and Cook Counties, but farther west and south across McHenry, DuPage, Kane, Kendall, Will and Kankakee Counties an inch or two is certainly possible.
The lake-effect showers will gradually increase into northwest Indiana, as temperatures continue to drop and winds become more northerly with heaviest accumulations shifting into Indiana Lake and Porter Counties early Sunday morning. The Southernmost part of Cook County and Lake County in Indiana could end up with as much as 6-inches in spots with a gradation into smaller accumulations south into Newton and Jasper Counties.
During the day Sunday snow showers should weaken, as the northerly winds slowly die off.
Heavy lake-effect snow showers are forecast to develop tonight and last into Sunday, depositing from 2 to 5-inches of snow along and just inland of the Lake Michigan shoreline in Lake and Cook Counties Illinois tonight, gradually shifting more over Lake and Porter Counties in northwest Indiana Sunday. With strong northeast winds gusting in excess of 30 miles per hour becoming more northerly later tonight and northwesterly Sunday, heavy lake-effect snow showers are forecast to develop and continue as the wind trajectory becomes more extended over the length of Lake Michigan.
Snow showers will gradually diminish along with the winds later Sunday.