There’s now a tropical cyclone with a Hawaiian name.

Tropical Storm Walaka formed Saturday morning some 680 miles south of Honolulu. It was given a Hawaiian name since it formed in the Central Pacific, the first one to do so. It is the sixth tropical cyclone in the Central Pacific basin.

The Central Pacific Hurricane Center said at 11 a.m. Saturday, Walaka was moving toward the west at 15 miles per hour with maximum sustained winds of 40 miles per hour. It was expected to steadily strengthen over the next two to three days and become a hurricane Sunday. It could rapidly strengthen into a major hurricane after that as it moves over warm sea surface temperatures and in a low-shear environment.

Tropical storm force winds currently extend 45 miles from the center.

The current forecast track will keep the new tropical storm well to the south of the main Hawaiian islands, moving to the west through Sunday, and then making a turn to the northwest Sunday night at Monday. It then will turn to the north early Tuesday, but it should be west of the islands by that time. It could come very close to Johnston Island, bringing hurricane conditions there as soon as Monday night.