Record high temperatures and high winds are possible Thursday, before a cold front expected to spread over Northwest Indiana tonight ices roads and sidewalks and ushers in another blast of snow.
Highs between 55 to 63 degrees were predicted Thursday in the Chicago area. Chicago's record high temperature of 61 degrees was set Jan. 11, 1880.
South-southwest winds could gust to 30 or 35 mph, according to the National Weather Service.
Temperatures were expected to begin falling by mid-evening, forecasters said.
A flash freeze was possible as a cold front moves from west to east starting in the early evening in north-central Illinois to Northwest Indiana by late Thursday or early Friday.
Temperatures were expected to decrease into the teens or 20s. Freezing rain or drizzle could glaze roads and sidewalks, and a dusting of snow was expected behind the front, forecasters said.
Sleet and snow accumulations could total as much as 1 inch.
A winter weather advisory for Lake, Porter, Newton and Jasper counties was scheduled from 9 p.m. Thursday to 6 a.m. Friday.
Drivers should allow extra time to complete trips and use caution because of slippery conditions, the weather service said. Drivers also should be prepared for reduced visibility in the overnight hours.
Localized ice jam flood will continue to be a threat on rivers, the weather service said.
More snow was expected after noon Friday and overnight Friday into Saturday, with the highest totals predicted in Lake County. High temperatures in the mid- to low 20s were predicted, though winds Friday could gust to 20 or 25 mph.
The Porter County Sheriff's Department issued a press release Thursday reminding residents in unincorporated areas that vehicles cannot be parked on roads if more than 2 inches of snow falls. Failure to remove vehicles could result in cars being towed at the owner's expense and a citation with fines up to $50.
Sun is expected Sunday, but the high temperature was expected to be below 20 degrees.