The Hawaiian Islands face a high risk of catastrophic flooding and mudslides due to persistent heavy rainfall. The eastern side of the Big Island is particularly vulnerable, with rainfall totals potentially exceeding 24 inches. Winds over 70 mph are also expected, which could lead to power outages and structural damage. Thousands of residents across the islands are at risk of flash flooding, and the situation could worsen if the storm makes direct landfall, though this remains uncertain.