Severe Flood ● Closed
Flood Watch issued September 26 at 5:26PM HST until September 27 at 6:00AM HST by NWS Honolulu HI, United States of America
Loading live data… · Marker positions are approximate; severity is labelled in each popup. Sources: USGS, GDACS, NASA EONET, NOAA/NWS, EMSC.
Hurricane Nolo is now south-southwest of the Big Island and
beginning to move more quickly off to the west. The possibility of
heavy rain could lead to localized flooding over portions of the Big
Island through tonight.
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...The Big Island.
* WHEN...Through late tonight.
* 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...
- The possibility remains for localized flooding over areas of the
Big Island due to heavy rain from Hurricane Nolo to the
south-southwest of the Big Island. Areas most at risk for
flooding are the windward and southeast portions of the Big
Island where the ground remains saturated after recent rains.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Kona; Kohala; Big Island Interior; Big Island Summit; Big Island South; Big Island Southeast; Big Island East; Big Island North |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-09-27T06:00:00-10:00 |
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 22 days ago (Sep 27, 2026 03:27 UTC) · we last heard from WMO Alert Hub (national weather services) 36 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: Kona; Kohala; Big Island Interior; Big Island Summit; Big Island South; Big Island Southeast; Big Island East; Big Island North
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.