The coastal cyclone is expected to bring moderate to heavy snow, along with high winds and possible blizzard conditions for the Carolinas on Jan. 31.

Bomb cyclone: A winter storm already spreading snow across the Southeast will strengthen rapidly into a bomb cyclone with hurricane-force wind gusts over the next 24 hours.

A low temperature of minus 27 degrees Fahrenheit was recorded Saturday morning in West Virginia, said Bob Oravec, lead meteorologist for the National Weather Service in College Park, Maryland.