Severe · Flood WatchActive alert

Flood Watch issued October 8 at 5:08AM HST until October 8 at

Affecting Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward

In effect until: Oct 9, 2026, 4:00 AM

Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward

Possible impact zone; conditions develop through 4:00 AM.

You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

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Read the original bulletin (official text)

A deepening area of low pressure north of the Hawaiian Islands has
drawn deep tropical moisture over the area resulting in a threat for
flooding for Oahu today.

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Oahu.

* WHEN...Through this 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 continue into this
afternoon as deep tropical moisture is drawn northward over the
area. Training of heavy showers containing intense rain rates is
possible.

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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™

Flood Watch issued October 8 at 5:08AM HST until October 8 at

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