A line of heavy showers and thundershowers has now moved over Maui, prompting the National Weather Service to issue a flash flood warning for the Valley Isle until 7 a.m.
Radar showed rain of 2 to 3 inches per hour falling over west Maui as the rain moves over the island.
Lanaii also remain under a flash flood warning, but forecasters say the worst of the weather has passed Molokai.
Most of the heavy rain passed over Oahu overnight causing power outages across the island including Pearl City, Waipahu, Kailua and Kahaluu.
But forecasters say no major problems were reported.
The weather service says the storm system is not yet past us and may still bring move heavy rain and gusty winds today and tonight.
The entire state remains under a flash flood watch through tonight.
Forecasters say the storm will likely bring 2 to 3 inches snow to Big Island summits today and Mauna Kea and Mauna Loa remain under a winter weather advisory.
The National Weather Service also issued a marine warning for Pailolo Channel, Maalaea Bay, Maui County’s leeward and windward waters, and the Kaiwi Channel. A small craft advisory was also issued for the Kaiwi Channel and Kauai’s northwest waters.
The flash flood warning for Oahu was lifted at about 1:30 a.m. as the line of showers passed the island.
On Kauai, the first island to be hit by the heavy showers, police closed the Hanalei Bridge at 7:25 p.m. last night, Kauai County spokeswoman Mary Daubert said. Stormwater was ponding and running across roadways across the island. Electricity was also knocked out in several areas, she said.
John Cummings, the Oahu Civil Defense spokesman, said city crews have been cleaning streams in preparation for winter storms and were out again yesterday in the Kailua area.
The city opened its Emergency Operations Center in the Frank F Fasi Municipal Building at 10:25 last night and closed it with the cancellation of Oahu’s flash flood warning early this morning.
The storm is expected to pass the state by Sunday.
But there is still a chance of scattered showers for the Honolulu Marathon Sunday morning. The forecast calls for partly sunny skies with a high near 74 and tradewinds of 8- to 13-mph.