Powerful storm starts hitting East Coast, including parts unaccustomed to heavy snow

Blizzardlike conditions stemming from a “ bomb cyclone ” were starting to bring heavy snow to the Southeast and were ushering in frigid temperatures to much of the East Coast Saturday, as tens of thousands of homes and businesses remained without power after being hit by a different icy storm last week.

About 240 million people were under cold weather advisories and winter storm warnings, a forecaster said. The frigid cold was expected to plunge as far south as Florida. Some areas unaccustomed...