The National Weather Service says northeast Indiana and northwest Ohio can expect wind chills dipping to between minus 10 to minus 25 degrees tonight, with more snow later today.
It said Fort Wayne is likely to hit minus 15 degrees tonight, with all of northeast Indiana and northwest Ohio expected to get more snow after 3 p.m.
Accumulations could be between half an inch and up to 2 inches in some places, the weather service said.
Winds are expected to pick up overnight, the weather service said, with blowing snow and reduced visibility in some areas.
The extreme cold is expected to continue until Friday morning, with more snow and gusty winds expected that night and Saturday morning.
For current conditions, including a local NOAA map, make our Weather page one of your favorites: