It's time to prepare for heavy snow this weekend as a rapidly intensifying winter storm arrives.

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.