It was uncertain if it would hit or just brush by the southern edge of the Big Island, said a meteorologist at the National Weather Service's Weather Prediction Center in College Park Maryland.
"Hector is our first hurricane this year", said Tom Travis, administrator of Hawaii Emergency Management Agency, in a press release on Friday. The National Hurricane Center continues to indicate that Hector will enter the Central Pacific later today and reach the local region around the islands around the Wednesday time period.
Hector's centre was about 1,210 miles (1,950 kilometres) east-southeast of South Point, Hawaii, and was moving west at 14 mph (22 kph).
The current Kilauea lava flow from one of about two dozen volcanic fissures that opened in the ground has been going on for 93 days, making the longest non-stop eruption on record from Kilauea's lower East Rift zone. Lava from the volcano has destroyed more than 700 structures, including residences, since eruptions began in May.
The NHC said: "A motion toward the west-northwest at an increased forward speed is expected through Monday night, followed by a westward motion Tuesday and Wednesday.
However, Hector is expected to still be a major hurricane when it moves into the central Pacific basin", according to the NHC.
Though the center of the hurricane will likely miss Hawaii, heavy rain from the storm is likely to pelt portions of the Big Island.