NASHVILLE -- A powerful storm bore down on the East Coast on Saturday, with forecasters warning of howling winds, flooding and heavy snow, including in some Southeast coastal communities more accustomed to hurricanes than blizzards. Temperatures plummeted even as tens of thousands of homes and businesses remained without power.

North Carolina, South Carolina, Georgia, and Virginia are all under winter storm warnings.

Forecasters are warning that a powerful winter storm could bring hurricane-force winds, heavy snowfall, and dangerous conditions across as many as 12 states.

On the heels of Winter Storm Fern, a strong storm will form off the East Coast this weekend that will bring snow, wind and coastal flooding. Here is our latest forecast.

• Bomb cyclone: A winter storm strengthened into a bomb cyclone off the Southeast coast, bringing powerful wind gusts and the most snowfall in 20 years to some areas.

The Jersey Shore may soon see strong winds from a storm and high tides from a full moon, conditions that could create more beach erosion.