Winter Storm Gianna is expected to rapidly intensify as it moves up the East Coast this weekend, bringing heavy snow, damaging winds and coastal flood concerns to parts of the Eastern Seaboard.

As the Myrtle Beach area braces for extreme cold and snow, one particularly attention-grabbing term is popping up in East Coast weather forecasts: bomb cyclone.

The storm comes as thousands across the South, including the Nashville area, remain without power after an ice storm knocked out electricity to more than a million customers and was blamed for dozens ...