Hurricane Florence strengthened early on Monday, packing maximum sustained winds of 105 miles per hour (170 kph), and forecasters warned that it is "expected to become a major hurricane very soon" as it churns toward the U.S. East Coast.
"While it is too soon to determine the exact timing, location and magnitude of these impacts, interest at the coast and inland from SC into the mid-Atlantic region should closely monitor the progress of Florence", said a NOAA statement. Helene's expected to turn north well ahead of threatening the U.S. East Coast.
The National Hurricane Center reclassified Florence as a hurricane in its 11 a.m. report while also issuing advisories in the Atlantic for two other tropical storms expected to become hurricanes: Isaac and Helene.
ABC News The track for Hurricane Florence shows it targeting the Carolinas by Thursday
Meteorologist Eric Holthaus warned on Twitter that it could become one of the worst storms in United States history.
Additional strengthening is forecast, and Isaac is expected to become a hurricane tonight.
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Florence's predicted path, as of early Monday morning.More news: Swedish election: far right on course for sizeable gains in vote
Hurricane Florence is strengthening and now has sustained winds of 90 miles per hour.
There have been six tropical storms in the Atlantic basin this year.
As of 5 p.m. Olivia was about 595 miles east-northeast of Hilo, packing maximum sustained winds of 75 mph.More news: I'll be back coaching soon - Zidane amid Man United links
Tropical Depression Nine became Tropical Storm Isaac on Saturday afternoon over the eastern tropical Atlantic, the National Hurricane Center said. The state's emergency management agency said it's "preparing for the possibility of a large-scale disaster". Drawing energy from the warm water, the now Category 2 storm could be a fearsome Category 4 with winds of 130 miles per hour or more by Tuesday.
If Florence stays on it's projected path as forecast by the National Hurricane Center, we will be on the west side of the storm, which is the "drier" side, and our rain chances will be a bit lower by the end of the week.
Both Tropical Storm Isaac and Tropical Storm Helene are expected to reach hurricane strength later today, but neither are considered potential threats.
The storm's maximum sustained winds remain near 85 km/h with higher gusts and it is moving west near 15 km/h.More news: Xbox introduces innovative limited edition grease-proof controller