Millions of Americans are hitting the roads and skies for the Fourth of July holiday. However, long-range forecasts indicate that a cold front may bring widespread storms to the northern Plains and Southeastern US on the Fourth, and there is even an outside potential for a home-grown tropical system to develop close to the Southeast coast during the holiday weekend, according to the FOX Forecast Center.HOW TO WATCH FOX WEATHER The live maps from FOX Weather will help you keep tabs on the current weather and travel situation across the U.S. Download the FOX Weather app to get our live stream, 3D radar and weather alerts anywhere you go.