Niihau; Kauai Southwest; 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; Big Island Summit; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward; Molokai Windward; Molokai Southeast; Molokai North; Molokai West; Molokai Leeward South; 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
Flood Watch issued September 16 at 4:03PM HST until September 18 at 6:00AM HST by NWS Honolulu HI
Flood Watch · Expires: Sep 17, 2026 16:15 UTC
Severity: Severe Urgency: Future Certainty: Possible Updated: Sep 17, 2026 06:15 UTC
Active / Indexed
Timing
- SentSep 17, 2026 02:03 UTC
- OnsetSep 17, 2026 04:00 UTC
- ExpiresSep 17, 2026 16:15 UTC
Affected areas
This advisory may be issued as multiple alerts with different affected areas. Below are the official area texts grouped into one page.