Severe · Flood WatchActive alert
Flood Watch issued October 7 at 1:41AM HST until October 8 at
Affecting Niihau; Kauai Southwest; Kauai Mountains; Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward
In effect until: Oct 8, 2026, 11:45 PM
Niihau; Kauai Southwest; Kauai Mountains; Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward
Possible impact zone; conditions develop through 11:45 PM.
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Read the original bulletin (official text)
A developing area of low pressure north of the Hawaiian Islands will draw deep tropical moisture northward resulting in a threat for heavy rain over Kauai and Oahu tonight through Thursday.* WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Kauai, Niihau and Oahu. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Flood prone roads and other low lying areas may be closed due to elevated runoff and overflowing streams. Urban areas may receive more significant flooding and property damage due to rapid runoff. * ADDITIONAL DETAILS... - Heavy showers and isolated thunderstorms will develop tonight and continue through Thursday as deep tropical moisture is drawn northward over the state. Training of heavy showers containing intense rain rates will be possible.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™