#national weather service hawaii

The National Weather Service has issued a Wind Advisory for portions of Maui, Lānaʻi and Hawaiʻi Island through 6 p.m. on Sunday, March 10, 2024. The NWS forecast calls for east winds blowing at 20-30 mph with localized gusts up to 50 mph.

3:27 p.m. UPDATE: The National Weather Service has canceled all flood watches, high wind and surf advisories as former Tropical Storm Calvin heads west away from Hawaiʻi. Only a small craft advisory and gale warning remain for island waters as of 3:30 p.m. The National Weather Service says breezy trades will continue around the islands “due to the pressure difference between Clavin and the subtropical high to the north and northeast.”

11 p.m. UPDATE: The “most damaging wind and weather conditions” are currently focused over the Big Island and the islands in Maui County tonight through Wednesday, according to the National Weather Service.  The NWS says each island will see about a 12-18 hour period of weather impacts.

Derek Wroe of the National Weather Service cautioned about weather complacency: “While everything is green and lush right now, we are expecting below-average rainfall, as we enter the dry season in Hawai‘i. Our long-range modeling shows that even our normally wet winter (2023-2024) will be abnormally dry.”

The NWS reports that flash flooding caused by excessive rainfall is possible as a kona low brings widespread heavy rainfall to the Hawaiian Islands from Thursday into the weekend.

Strong northeast winds are expected to develop after a cold front passes, potentially resulting in a period of very windy conditions. Additionally, a powerful low pressure system passing north of the area will generate a large north swell that will build Wednesday night, with the peak of the swell potentially coinciding with extreme high tides Thursday and Friday mornings.

Darby has weakened overnight from a hurricane to a tropical storm, and sits well east of Hawaiʻi. The forecast track will bring the center of Darby, or its remnant low, south of the Big Island on Saturday.

Surf is expected to reach 6 to 9 feet today, and lower to 5 to 8 feet tonight.

A flood warning replaces a flood advisory for the island of Kauai as a band of heavy rain advances across the island. The river gauge at Hanalei was expected to increase above 7.5 feet, warranting flood warnings for a rapid rise in water levels.

Typically, our storms come from Central America and work their way East to West across the Pacific, tending to drift south of the islands, based upon our island trade wind weather patterns.