A powerful storm system dumped heavy rain on Oahu, causing road closures across the island. The north and west shores were the hardest hit, with a flash flood warning covering much of the island for hours. The National Weather Service reported rain falling at 1 to 2 inches per hour in heavier showers, with more bands moving in from the west. Emergency shelters were opened for those seeking a safe place to stay and officials advised people to bring essentials when possible. An evacuation order was issued for Waialua due to dangerous flooding, but only one resident remained. The Oahu Department of Emergency Management issued a traffic advisory for Waimea Bay, reporting Kamehameha Highway closed in both directions due to hazardous conditions. Non-essential state and city offices and many public services remained closed due to severe weather conditions.