Tropical Storm Erin to strengthen into a hurricane Fri.
Digest more
Tropical Storm Erin is continuing to move west and is forecast to become a hurricane later this week, according to the National Hurricane Center.
Erin is forecast to become a Category 4 hurricane, threatening Puerto Rico, Bermuda, and U.S. coasts with flooding and surf. Follow Newsweek's live blog.
As of the latest advisory on Aug. 11, Invest 97L has a high chance — 90% — chance of strengthening in the next seven days.
The National Hurricane Center is predicting Invest 97L could become a tropical depression or tropical storm as early as later this morning, Aug. 11.