Schools are closed all over the Miami Valley and the state as Ohioans braced for dangerously cold weather - and officials are warning people to stay inside if possible.
Ohio State University and the University of Toledo closed Monday, too, as temperatures in the state were expected to be the coldest in more than two decades.
Forecasters say low temperatures around zero - with possible wind chill factors of 40 below zero - are possible through Wednesday. The entire state was under a rare wind-chill warning, which means frostbite could affect exposed skin within 10 minutes outside.
And the highs aren't expected to get out of single digits.
The arctic blast was being ushered in by several inches of snow Monday in many areas of the state, more in northeast Ohio.