From the National Weather Service in northern Indiana at 11:25 a.m. Saturday:
A dangerous winter storm with historic cold air and wind chills is coming to northwest Ohio.
A significant winter storm will bring heavy snow with blowing and drifting snow beginning tonight and continuing into Sunday night. This will be followed by extremely cold temperatures and deadly wind chills Sunday night through Tuesday.
A cold front will move across the area tonight with snow spreading from northwest to southeast. Accumulations 2 to 4 inches are expected tonight near this front across northwest Indiana and southwest lower Michigan.
Lesser snowfall amounts of 1 to 2 inches are expected across the rest of the area. A rapidly intensifying low pressure area will move along the front Sunday into Sunday night bringing additional heavy snow to the region Total snowfall amounts of 6 to 12 inches are possible by Sunday night over the entire area, with the heaviest amounts expected over east central Indiana and northwest Ohio.
In addition, strong northwest winds will develop Sunday with widespread blowing and drifting snow and near-zero visibility at times.
As winds increase and colder air arrives, wind chills will quickly drop to between 30 and 45 degrees below zero Sunday night and persist through Tuesday.
This is a dangerous and potentially deadly winter storm and travel is discouraged. If you must travel, be prepared for significant travel issues with possible road closures and bitterly cold wind chills. Pack extra blankets, food, water, a shovel and make sure you have plenty of fuel.
Do not attempt to walk long distances or spend long periods of time outside.