There is “increasing confidence” Massachusetts will be hit by a coastal winter storm on Sunday, a weather event that the latest forecasts project will bring significant snowfall to the region.

One area to watch will be the South Coast, Cape, and southern Rhode Island, where an uptick in temperatures could spark some sleet and wet, heavier snow.

A winter weather system moving through the eastern U.S. could reorganize into a strong coastal storm off the East Coast later this weekend.

The Storm Watch 9 team continues to track a coastal storm set to develop off the East Coast this weekend. Its impacts on New Hampshire, if any, are not known at this time.

When storms undergo bombogenesis, they rapidly strengthen. The National Weather Service writes, "Bombogenesis can happen when a cold air mass collides with a warm air mass, such as air over warm ocean waters. It is popularly referred to as a bomb cyclone."

As millions of Americans hunker down for the winter storm, 19 states and Washington, D.C., have declared states of emergency.

A deadly winter storm may be winding down for some, but extremely cold weather will persist. Here are the latest updates on power outages and forecasts.