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

The new WFMY+ 24/7 Weather Impact stream offers constant access to live radar and forecasts.

You're about to walk your dog, but the sky looks ominous. You pull out your phone, open your favorite weather app, and see that it's about to pour. You wait for the rain to pass. Or maybe you planned ...