Headline:
Flood Watch issued September 24 at 4:48AM HST until September 26 at 6:00PM HST by NWS Honolulu HI
Event:
Flood Watch
Urgency:
Future
Effective:
September 24, 2026 - 7:48am
Expires:
September 24, 2026 - 10:00pm
Description:
Intensifying Tropical Storm Nolo is expected to bring heavy flooding
rain 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 continues to be
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 Nolo will bring heavy showers
later today and tonight over Big Island and spread to Maui.
Windward and southeast Big Island and windward Maui are the most
likely to experience heavy rain due to the slow moving tropical
cyclone, with considerable flooding possible over portions of Big
Island Friday and Saturday. Other islands in Maui County are at
risk as well.
Instruction:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Area Description:
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
Forcast Office:
NWS Honolulu HI
Sender:
w-nws.webmaster@noaa.gov