LIST: School closures and delays across Chicago-area

Winter storm hits northwest Indiana

MICHIGAN CITY, Ind. -- Northwest Indiana got the worst of Saturday's wintry weather.

The area was under a Winter Storm Warning as the strong winds continued to churn the lake effect snow machine.

Between three and five inches of snow fell overnight in Porter County.

WATCH: First significant snow fall creates dangerous road conditions

The first significant snow fall of the season is causing dangerous conditions on the roadways throughout the Chicago area.

There were a number of spinouts, crashes and rollover accidents in the overnight hours, from Friday into Saturday.

Emergency crews said their response time was slowed by black ice on the roads.

Hundreds of salt trucks were out all night in the city and suburbs, and on expressways and tollways.

Click here for the latest forecast from the WGN Weather Center