The Big Island and parts of Maui County are at risk of life-threatening flash floods, landslides, and strong winds. Rainfall could reach up to 35 inches on the Big Island and 20 inches on Maui, with other islands receiving up to 6 inches. Coastal flooding and a storm surge of 1-3 feet are also possible, particularly along the Big Island's coast. The storm's winds could cause tree damage, power outages, and structural damage, especially if hurricane-force winds reach the Big Island. High surf and dangerous rip currents are expected to develop by Friday.