The threat of heavy rain and a stray thunderstorm continues into Monday for the west end of the islands, with a Flash Flood Watch extended for Kauai and Niihau into early Monday morning. A surface trough far to the west of Kauai is interacting with strong high pressure to the northeast of the islands, which is resulting in wet weather. As the disturbance moves away, winds start increasing Monday, with locally windy conditions possible by the end of the week.
A High Surf Advisory is posted for the east facing shores of Kauai, Oahu, Molokai, Maui and the Big Island, with 6 to 10 foot waves possible. There's also a Small Craft Advisory for most Hawaiian coastal waters for strong south-southeast winds and large waves in windward waters.