A Hurricane Warning is in effect for Maui County, including the islands of Maui, Lanai, Molokai and Kahoolawe, Oahu, and Kauai County, including the islands of Kauai and Niihau. A Tropical Storm Warning is in effect for Hawaii County. A Tropical Storm Watch is in effect for portions of the Papahanaumokuakea Marine National Monument from Nihoa to French Frigate Shoals to Maro Reef.
Hurricane conditions are expected in portions of Maui County today, on Oahu by this afternoon, and on Kauai and Niihau tonight. Tropical Storm conditions are imminent across the Big Island. Due to the steep terrain of the islands, hurricane-force wind gusts are possible even within the tropical storm warning area.
The combination of higher than predicted water levels, dangerous storm surge, and large breaking waves will raise water levels by as much as 3 feet above normal tides near the center of Douglas. For storm information specific to your area, please monitor products issued by the National Weather Service office in Honolulu – www.weather.gov/hfo/
At 5 a.m. HST, the center of Hurricane Douglas was located about 145 miles (230 km) east of Kahului and about 235 miles (380 km) east of Honolulu. It’s moving toward the west-northwest near 16 mph (26 km/h) and this motion is expected to continue over the next couple of days. On the forecast track, Douglas will pass near, or over, the islands from Maui to Kauai today and tonight.
Maximum sustained winds are near 90 mph (150 km/h) with higher gusts. Hurricane-force winds extend outward up to 30 miles (45 km) from the center and tropical-storm-force winds extend outward up to 105 miles (165 km). Gradual weakening is forecast during the next 48 hours, but Douglas is expected to remain a hurricane as it moves through the islands.
Heavy rainfall associated with Douglas is expected to affect portions of the main Hawaiian Islands from early this morning into Monday. Total rain accumulations of 5 to 10 inches are possible from Maui County westward to Kauai County, with the greatest amounts up to 15 inches in elevated terrain. This rain may result in life-threatening flash flooding and land slides, as well as rapid water level rises on small streams. Douglas could produce an additional 2 to 4 inches of rainfall over the northern half of the Big Island.