Many area schools delayed the start of classes Thursday due to dangerously cold temperatures and wind chills.
The extreme cold was also blamed for delays on the South Shore commuter rail line. Some morning rush westbound trains were running up to 30 minutes late due to mechanical problems caused by the cold, the Northern Indiana Commuter Transportation District said.
As of 5 a.m., the National Weather Service reported temperatures of 5 below zero with wind chills of 16 below zero in Lansing, Crown Point and Hammond.
Valparaiso recorded the lowest local temperature at 7 below zero with a wind chill of 23 below zero and Michigan City was the warmest at 0 with a wind chill of 13 below zero.
A wind chill advisory for Lake, Porter, Cook and Will counties expired at 5 a.m. A wind chill advisory remains in effect for LaPorte County until 11 a.m.
Forecasters said the temperature will eventually rise to around 21 degrees under sunny skies.