The National Weather Service has issued a flash flood warning for the area and the local government has urged residents to set aside two weeks' worth of food and water.

"Be prepared to shelter in place with 14 days of food supplies and water and any other necessities," Hawaii Gov. David Ige said at a news conference Wednesday.

The central of the storm, measured by scientists as the most severe Category 5, could become the first major hurricane to make landfall in the state in 26 years from Thursday through Friday, forecasters said.

The National Weather Service also said Thursday that Hurricane Lane could degrade to Category 3 when it reaches the islands somewhat since a southwesterly shear could impact the cyclone.