Meanwhile, a bushfire on the Big Island doubled in size overnight and has burned through more than 600 hectares of Hawaii Volcanoes National Park.
But the U.S. National Hurricane Center says Ileana now is predicted to remain a tropical storm before dissipating by late Tuesday due to the influence of the larger John. Beachgoers are warned of strong breaking waves and currents that will make swimming hard and unsafe, the news site said.
Tropical storm force winds up to 73 miles per hour are possible for the east and southeast sections of Hawaii Island, especially for the areas around South Point.More news: Angelina Jolie Pitt wants divorce finalised by year's end
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Thank you for signing up for the STL Morning Rush Newsletter. As that ridge strengthens, its counterclockwise flow will steer the storm farther to the west and away from the islands. "If it does, it will become Typhoon Hector".
John was centered about 340 miles (545 kilometers) southwest of the Mexican port of Manzanillo early Monday afternoon, with maximum sustained winds of 70 mph (110 kph).
The hurricane center said Kristy was likely to strengthen somewhat in coming days.
High winds gusts are forecast through Wednesday and will affect the entire island, especially downslope areas. Debby poses no threat to land, the hurricane center said. Local experts continue to remind residents to be prepared and keep their eye on the regular local forecasts, as well as wider Atlantic weather forecasts available on a range of media. Debby is the fourth named storm of the 2018 Atlantic hurricane season.