A cold front will move through Oahu tonight, then slow and stall near Maui County by early Saturday. This frontal boundary combined with increasing moisture and a disturbance aloft, will bring the potential for heavy rainfall, flash flooding, and a few thunderstorms from Saturday afternoon through Monday. Breezy north to northeasterly winds will develop behind the front, then the trades will become very windy late Sunday into Monday as strong high pressure builds well north of the state and interacts with a deepening trough to the west. Conditions will gradually improve by mid to late next week, though breezy and occasionally showery trade wind weather is expected to persist.
High Surf Warning until 6 PM HST Saturday for Niihau-Kauai Leeward-Waianae Coast-Oahu North Shore-Maui Windward West-Kauai North-Molokai Windward-Molokai North-Molokai West-Maui Central Valley North-Windward Haleakala.
Flood Watch from Saturday afternoon through Monday afternoon for Niihau-Kauai Leeward-Kauai Mountains-Waianae Coast-Oahu North Shore-Olomana-Central Oahu-Waianae Mountains-Lanai Mauka- Kahoolawe-Maui Windward West-Maui Leeward West-Haleakala Summit- Kona-Kohala-Big Island Interior-Kauai North-Kauai East-Kauai South-East Honolulu-Honolulu Metro-Ewa Plain-Koolau Windward- Koolau Leeward-Molokai-Lanai Windward-Lanai Leeward-Lanai South- Maui Central Valley North-Maui Central Valley South-Windward Haleakala-Kipahulu-South Maui/Upcountry-South Haleakala-Big Island South-Big Island Southeast-Big Island East-Big Island North.
High Wind Watch from Sunday morning through Monday afternoon for Kauai Leeward-Kauai Mountains-Waianae Coast-Central Oahu-Waianae Mountains-Lanai Mauka-Kahoolawe-Maui Leeward West-Kohala-Big Island Interior-Kauai South-Honolulu Metro-Ewa Plain-Koolau Leeward-Molokai West-Molokai Leeward South-Lanai Windward-Lanai Leeward-Lanai South-Maui Central Valley North-Maui Central Valley South.
High Surf Advisory from 6 AM to 6 PM HST Saturday for Kona- Kohala.
Winter Storm Watch from Saturday afternoon through Monday afternoon for Big Island Summits.
Small Craft Advisory until 6 PM HST Sunday for Kauai Northwest Waters-Kauai Windward Waters-Kauai Leeward Waters-Kauai Channel- Oahu Windward Waters.
Small Craft Advisory from 6 AM Saturday to 6 PM HST Sunday for Oahu Leeward Waters-Kaiwi Channel-Maui County Windward Waters- Maui County Leeward Waters-Maalaea Bay-Pailolo Channel- Alenuihaha Channel.
