The National Hurricane Center is keeping an eye on two systems in the Eastern Pacific, including Tropical Storm Dora, but there is no indication at this time that either will impact or even come near Hawai‘i.
County officials say staff are inspecting and clearing culverts, and inspecting and testing drainage pumps to confirm they operate. Sand plugs are being lowered in Kīhei to help potential release of floodwaters. Also, traffic control devices are being assembled and prepared to deploy where hazards or closures of roadways occur.
2 a.m. UPDATE: Tropical Storm Calvin continues its pass south of the Big Island. At 2 a.m., the storm was located about 85 miles S of South Point, Hawaiʻi and 215 miles S of Hāna, Maui. Just before 2 a.m., the National Weather Service issued a Flood Advisory for Hawaiʻi Island until 5:15 a.m. At 1:56 a.m., radar showed heavy rain over north and southeast slopes of the Big Island, according to the NWS. “Heavy rain was falling at a rate of 1 to 2 inches per hour in some areas and increasing in coverage,” the NWS reports.
From tonight through Thursday, Maui could see total rainfall amounts of 2-6 inches from the North Shore near Haʻikū to East Maui near Hāna; while the big island (which is currently under a Tropical Storm Warning) is forecast to get 6-10 inches, according to the National Weather Service.