Erin formed in the eastern Atlantic Ocean on Monday and is strengthening as it moves westward. The NHC said there is still uncertainty about what impact it could have on states like Florida on the U.S. East Coast, as well as the Bahamas and Bermuda.

Tropical Storm Erin is expected to strengthen, but will the storm be a direct hit to Delaware and the East Coast? See models, the latest updates here.

ORLANDO, Fla. - Tropical Storm Erin continues its steady westward march across the Atlantic, gaining strength and expected to reach hurricane status by Friday, according to the National Hurricane Center (NHC).