Flood Watch Hawaii | Effective 03/22/2026 18:00

Headline: 
Flood Watch issued March 22 at 3:00PM HST until March 23 at 6:00AM HST by NWS Honolulu HI
Event: 
Flood Watch
Urgency: 
Future
Effective: 
March 22, 2026 - 6:00pm
Expires: 
March 23, 2026 - 9:00am
Description: 
...FLOOD WATCH CONTINUES FOR MOLOKAI MAUI LANAI KAHOOLAWE AND THE BIG ISLAND... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Maui, Molokai, Lanai, Kahoolawe, and 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 due to excessive rain over saturated ground. Urban areas may receive more significant flooding and property damage due to rapid runoff. * ADDITIONAL DETAILS... - Moisture left from the departing kona low and a trough aloft will bring possible heavy rain and isolated thunderstorms tonight.
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; 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