Flood Watch Hawaii | Effective 03/23/2026 18:02

Headline: 
Flood Watch issued March 23 at 3:02PM HST until March 24 at 6:00AM HST by NWS Honolulu HI
Event: 
Flood Watch
Urgency: 
Future
Effective: 
March 23, 2026 - 6:02pm
Expires: 
March 24, 2026 - 8:15am
Description: 
...FLOOD WATCH IN EFFECT THROUGH TONIGHT FOR THE BIG ISLAND OF HAWAII... * WHAT...Flash flooding caused by excessive rainfall continues to be 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 due to excessive rain over saturated ground. Urban areas may receive more significant flooding and property damage due to rapid runoff. * ADDITIONAL DETAILS... - Unstable tropical moisture left from the departing kona low and troughing aloft will bring possible heavy rain and thunderstorms tonight.
Instruction: 
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Area Description: 
Kona; Kohala; Big Island Interior; Big Island South; Big Island Southeast; Big Island East; Big Island North
Forcast Office: 
NWS Honolulu HI
Sender: 
w-nws.webmaster@noaa.gov