A hurricane churning in the Atlantic Ocean strengthened Sunday as a separate system threatened to dump rain on Florida, sparking fears about standing water amid a battle against Zika virus. Hurricane Gaston was around 600 miles east of Bermuda and was moving northwest at 5 mph as of 11 a.m. Sunday, the National Hurricane Center said.

It had maximum sustained winds of 105 mph. The hurricane had previously weakened to a tropical storm before regaining strength Saturday. Forecasters expect the hurricane to slow down and swing north by Monday, and there are no warnings issued for land. CONTINUE