An ice storm hitting parts of Indiana has shut down schools and left hazardous conditions on roadways.

The National Weather Service says an ice storm warning was issued for a large portion of the state, including central, southeast and southwest Indiana, with snow forecast on Thursday, Nov. 15, in other places.

Most of Michiana was placed under a Winter Weather Advisory through 4 p.m. EST.

A Travel Advisory was issued by the Indiana Department of Homeland Security for St. Joseph County, due to the slick conditions.

Police agencies in St. Joseph and Elkhart Counties spent the morning dealing with dozens of crashes and slide-offs, including several on the U.S. 20 Bypass.

Weather conditions were expected to improve in the afternoon.

In Indianapolis, the state’s largest school district was among those closed Thursday due to the weather. Indianapolis Public Schools cited “dangerously slick road conditions” in its decision to close all of its campuses. Some other Indianapolis-area school districts also shut their doors for the day.

Dozens of school districts in Michiana made the decision to delay or close schools for the day.

The wintry weather comes as a pre-winter storm hit the South and lower Midwest on Wednesday, moving east on Thursday.

The Associated Press contributed to this story