Severe Flood ● Active
Flood Watch issued October 28 at 3:29PM HST until October 29 at 5:00AM HST by NWS Honolulu HI, United States of America
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A trough moving over the state is expected to continue to bring
abundant tropical moisture to the area through tonight. Heavy rain
and isolated thunderstorms are expected to produce flash flooding
that may impact areas across Oahu through the Big Island.
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Oahu, Molokai, Lanai, Maui, Kahoolawe and The Big Island.
* WHEN...Through late tonight.
* IMPACTS...Significant flooding may occur due to the overflow of
streams and drainages. Roads in several areas may be closed, along
with property damage in urban or low lying spots due to runoff.
Landslides may also occur in areas with steep terrain.
* ADDITIONAL DETAILS...
- Heavy showers and isolated thunderstorms with intense rain rates
may develop at any time through tonight as a trough continues
moving over the state. While the greatest flood threat will be
focused over Oahu and Maui County, all islands are at risk.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit; |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-10-29T05:00:00-10:00 |
Official source
Warnings courtesy of the issuing national meteorological service, via the WMO Alert Hub.
This is an official warning issued by the authority named above. Follow its instructions and those of your local emergency services.
Severity as published by WMO Alert Hub (national weather services).
View original reportThis event as JSON · API and licence
Source updated 1 hour ago (Oct 29, 2026 01:30 UTC) · we last heard from WMO Alert Hub (national weather services) 52 seconds ago
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About this location
The agency did not publish coordinates for this warning. The pin is the centre of the country, not the location of the event — read the area name, not the map, for where it applies.
Area as the agency stated it: Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit;
Official authorities in United States
If you are there, these are the bodies whose instructions apply. This site is not an emergency service and does not issue warnings.
More for United States →What to do
Follow the instructions issued by WMO Alert Hub (national weather services) and your local emergency services. The guidance below is background.
Flood preparation, evacuation decisions, and the dangers of driving or walking through floodwater.
Open Flood Safety Guide →Earlier flood events in United States
Severe and extreme events of the same kind, before this one. Listed for scale, not because they are connected to it.
Nearby & related events
Disclaimer: figures are automatic feeds from the named agencies and may be revised. Do not use this page for life-safety decisions — follow official local emergency services.