Tropical Storm Erin is expected to strengthen into a hurricane later this week in the Atlantic Ocean, according to the National Hurricane Center.

Tropical Storm Erin is tracking west over the open Atlantic Ocean on Tuesday and forecasters expect it to become the first hurricane of the Atlantic season this week.

Tropical Storm Erin, still far in the east-central Atlantic, is forecast to intensify into a major Category 3 hurricane by this weekend, but a big turn to the north is still expected before the