Isaias expected to return to Category One hurricane, hit Carolinas by Monday night

Tropical Storm Isaias intensified Monday afternoon and is expected to return to Hurricane strength after sideswiping the Bahamas and Florida before taking aim at the Carolinas.

The National Hurricane Center has now issued a hurricane warning from South Santee River, South Carolina, to Surf City, North Carolina, according to the Associated Press. And a tropical storm warning has been extended along the East Coast as far north as  New Hampshire.

The storm is expected to make landfall Monday night. As of the afternoon, Isaias had maximum sustained winds of 70 mph and is expected to become a Category 1  hurricane.

Isaias killed two people in the Caribbean and roughed up the Bahamas but remained at sea as it brushed past Florida over the weekend, the wire service also reports.