Tropical Storm Erin could soon become the Atlantic season’s first hurricane

Erin strengthened into a strong tropical storm with sustained winds of 70 mph on Thursday evening while over the open tropical Atlantic, according to the National Hurricane Center.

​ Erin strengthened into a strong tropical storm with sustained winds of 70 mph on Thursday evening while over the open tropical Atlantic, according to the National Hurricane Center. Read More Breaking News, Latest News and Videos | CNN