FOX Weather Meteorologist Craig Herrera tracks the next system that has a medium chance of tropical development behind Hurricane Erin in the Atlantic Ocean's Main Development Region.

As Erin continues to churn over very warm Atlantic water, the storm is forecast to remain a category 4 throughout the day. By Tuesday morning, Erin is forecast to remain a major category 3 hurricane with winds up to 130 mph. The storm doesn't downgrade to a category 2 until Thursday morning as it begins it's northeast turn away from the east coast.

A new system has emerged in the eastern tropical Atlantic, heading westward toward the Leeward Islands as Hurricane Erin continues to spin.

Jean-Raymond Bidlot, senior scientist in ocean modeling at the European Centre for Medium-Range Weather Forecasts (ECMWF) told Newsweek that Erin is forecast to strengthen over the next week as it heads toward the U.S. East Coast, reaching peak intensity offshore from Cape Hatteras.

Hurricane Erin weakened to a Category 3 hurricane on Sunday, its outer bands lashing the Virgin Islands and Puerto Rico, as forecasters warned the storm was rapidly growing in size and would gain new strength.