Tropical Storm Erin is slightly intensifying and forecast to become a hurricane Friday with a chance of ultimately affecting the U.S. East Coast next week.

Tropical Storm Erin is expected to become the first hurricane of the 2025 Atlantic season, forecasters say.

Forecasters say Tropical Storm Erin is "moving quickly" as it strengthens and heads toward the western hemisphere, but U.S. weather officials say it's too early to tell what…