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Severe · Flood WatchActive alert

Flood Watch issued September 25 at 4:35AM HST until September 26 at

Affecting Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit; Kona; Kohala; Big Island Interior; Big Island Summit; Molokai Windward; Molokai Southeast; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Maui Central Valley North; Maui Central Valley South; Windward Haleakala; Kipahulu; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Big Island East; Big Island North

In effect until: Sep 26, 2026, 4:45 AM

Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit; Kona; Kohala; Big Island Interior; Big Island Summit; Molokai Windward; Molokai Southeast; Molokai North; Molokai West; Molokai Leeward South; Lanai Windward; Lanai Leeward; Lanai South; Maui Central Valley North; Maui Central Valley South; Windward Haleakala; Kipahulu; South Maui/Upcountry; South Haleakala; Big Island South; Big Island Southeast; Big Island East; Big Island North

Possible impact zone; conditions develop through 4:45 AM.

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

Read the original bulletin (official text)
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.
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Alert data: U.S. National Weather Service / NOAA · Translation: WeatherTranslate™