Known as Tropical Depression 9, it looked set to strengthen into Tropical Storm Hermine off Florida on Wednesday morning and make landfall Thursday night. Forecasters warned the northwest of the state could see to 12 inches of rain.
Karins warned of rough surf and dangerous rip currents off of North Carolina as so-called Tropical Depression 8, which had glanced the coastline late Tuesday, headed back out into the Atlantic. The storm system had maximum sustained wind speeds of 35 mph and was moving northeast at 5 mph early Wednesday.
In the Pacific, Category 1 Hurricane Madeline churned toward Hawaii, promising to bring heavy rain and high winds. Category 4 Hurricane Lester followed roughly Madeline's path and toward the archipelago. It was forecast to hit over the weekend, according to the National Weather Service.
"Madeline is going to pass dangerously close to the Big Island of Hawaii late today into Thursday morning Hawaiian time," Karins said early Wednesday.
The storm was expected to be a Category 1 hurricane on its closest approach to Hawaii's main island, and minor wind damage along with threat of flash flooding, he said. Between 5 and 10 inches of rain were expected with higher amounts in some areas.
It could be the first Pacific hurricane to make landfall in that state in decades.