Tropical Storm Humberto poised to become first Atlantic hurricane of season

A tropical storm is moving in a westward path across the Atlantic and may become a hurricane within one day — which would make it the first Atlantic hurricane of the 2013 season. The first hurricane of the season usually forms by Aug. 10. Since the mid-1960s, the latest date for the first hurricane to form was set in 2002 when Hurricane Gustav formed on Sept. 11.

Tropical Storm Humberto’s maximum sustained winds climbed to 60 mph by 11 p.m. ET Monday, according to the U.S. National Hurricane Center. It may become a full-fledged hurricane Tuesday, the center said.