Overnight temperature plunge hits eastern United States

( CNN) On Friday, Cleveland citizens experienced a balmy day with a high of 60 degrees.

The Ohio city was among various in the Midwest, Southeast and Northeast that insured crisply lurching temperatures followed by freezing sprinkle, sleet and snow on Friday night and into Saturday.

Nearly 17 million people, in places from northern Pennsylvania to Maine, continued under wintertime storm warnings or wintertime weather advisories late Saturday morning — about half the crowd affected later on the day.