Severe Flood ● Closed
Flood Watch issued September 25 at 4:35AM HST until September 26 at 6:00PM 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 expected to bring heavy showers to the eastern end
of the state over the next few days. The exact track of the dangerous
tropical cyclone remains somewhat uncertain, but significant heavy
rain is likely over windward and southeast Big Island.
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Big Island, Maui, Lanai, Molokai, and Kahoolawe.
* WHEN...Through Saturday afternoon.
* 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...
- Deep moisture on the north side of Hurricane Nolo will bring
heavy showers to the Big Island, and to a lesser extend to Maui
through the Saturday. Windward and southeast Big Island, and
windward Maui, are the most likely to experience heavy rain due
to the slow moving system, with considerable flooding possible
over the remaining portions of Big Island and Maui today and
Saturday. The remainder of Maui County has a lower possibility of
flooding, but remains at risk.
Measurements
| Coordinates | 39.9645, -100.8105 |
|---|---|
| Region | Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit; Kona; Kohala; Big Island Interior; Big Island Summit; Molokai Windward; Mo |
| Location Precision | country |
| Issuing Authority | United States of America — us-noaa-nws-en |
| Cap Urgency | Future |
| Cap Certainty | Possible |
| Cap Expires | 2026-09-25T18:45:00-10:00 |
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 24 days ago (Sep 25, 2026 14:37 UTC) · we last heard from WMO Alert Hub (national weather services) 39 seconds ago
On a slow connection? Low-bandwidth version — no map, no scripts, under 14 KB.
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: Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit; Kona; Kohala; Big Island Interior; Big Island Summit; Molokai Windward; Mo
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.