The storm is causing significant flooding, particularly in windward areas of Hawaii island and Maui County, with flash flooding and mudslides reported. Tropical-storm-force winds are affecting Oahu and Kauai, with gusts nearing hurricane strength in elevated areas. Coastal regions face risks of localized flooding and beach erosion due to large waves and storm surges. Residents are advised to remain cautious as hazards such as downed power lines and flooded areas may persist even after the storm passes.