Tropical Storm Erin is continuing to pick up strength as it moves across the Atlantic, with forecasters expecting the storm to officially strengthen into a hurricane on Friday, Aug. 15, according to the National Hurricane Center.

As of Friday morning, Tropical Storm Erin is just under hurricane status with 70 mph sustained maximum wind speeds. It's currently located 520 miles east of the Northern Leeward Islands and is traveling west-northwest at 17 mph, according to the 8 a.m. ET Friday NHC forecast.

Track Hurricane Erin with our collection of maps as it brings impacts from the Caribbean to the East Coast and Bermuda.