The National Weather Service in Louisville said major impacts from the storm, which is expected to impact over 170 million Americans, are possible.

The Post assigned Cincinnati a subjective "winter storm-impact rating," which indicates the severity of the conditions expected from the storm, of 9 out of 10. The 12 cities were not ranked but instead listed roughly from west to east, which is the path of the storm. For the full list, see here.

Follow live updates as a winter storm is expected to bring heavy snowfall, icy roads and cold temperatures from the southern states to the Northeast.