However, a Cat 2 storm's wind speed is "extremely risky", according to the National Hurricane Center, capable of ripping trees from the ground, wreaking major roof damage on homes and causing power outages that may last weeks and affect three million households.
Olivia is the first tropical cyclone to make landfall on Maui in modern history, National Weather Service forecasters said.
The centre urges people within the affected areas to take all necessary actions to protect life and property from rising water and the potential for other risky conditions.
Florence's maximum sustained winds were clocked on Thursday at 105 miles per hour (165 kph) after it was downgraded to a Category 2 on the five-step Saffir-Simpson scale, according to the NHC.
"When it comes to this kind of storms, I ain't gonna lie", she said. The National Hurricane Center is calling for 20 to 30 inches of rain in North Carolina, with spots up to 40 inches. Only one storm scared them enough to leave the island.
"This is a very unsafe storm", said FEMA's Long, urging people still in evacuation zones to heed orders to flee to safer ground.
The National Hurricane Center's best guess was that Florence's eye would blow ashore as early as Friday afternoon around the North Carolina-South Carolina line.
THE life-threatening hurricane, Florence, is expected to hover the Carolinas in the USA with torrential rains, high winds and massive coastal erosion. "Our region will be seeing a lot of rain, wind, and flooding this week so #BePrepared", the Federal Emergency Management Agency (FEMA) said on Twitter. However, while the hurricane hasn't strengthened in terms of peak winds, the inner-core and outer wind fields have continued to expand, resulting in an increase the cyclone's total energy, which will create a significant storm surge event.
The hurricane's immensity is why some 10 million people across North Carolina, South Carolina and Virginia are under storm watches and warnings, with meteorologists projecting Florence could become the most powerful storm to hit this part of the United States in at least 25 years.
Hurricane conditions will likely hit the Carolina coast on Thursday night or early Friday.
While the storm may have slowed down slightly, it will still bring life-threatening storm surges, high winds, massive flooding and power cuts as it makes landfall on the coast of North and SC. The gradually slowing but still life-threatening storm is moving northwest at 15 miles per hour (24 kph).
Despite all the warnings from numerous authorities, some residents say are planning to ride out the storm.
NOAA's advisory also states that the southeastern and mid-Atlantic states should monitor the progress of Hurricane Florence closely. Tropical Storm Olivia made a double landfall in Hawaii Wednesday morning, first in west Maui then Lanai, KHNL reports.