< Flood Watch Hawaii | Effective 03/09/2026 17:57

Flood Watch Hawaii | Effective 03/09/2026 17:57

Headline: 
Flood Watch issued March 9 at 2:57PM HST until March 14 at 6:00PM HST by NWS Honolulu HI
Event: 
Flood Watch
Urgency: 
Future
Effective: 
March 9, 2026 - 5:57pm
Expires: 
March 10, 2026 - 8:00am
Description: 
...FLOOD WATCH IN EFFECT FOR NIIHAU AND KAUAI BEGINNING TUESDAY... ...FLOOD WATCH IN EFFECT FOR OAHU BEGINNING TUESDAY EVENING... ...FLOOD WATCH IN EFFECT FOR MAUI COUNTY BEGINNING WEDNESDAY... * WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Oahu. * WHEN...From Tuesday evening 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... - Considerable flash flooding is possible this week beginning Tuesday evening as a powerful kona low develops northwest of the state and draws deep tropical moisture across the islands. Persistent bands of heavy rain and thunderstorms may produce intense rainfall rates, leading to rapid rises in streams and flooding of roads and low-lying areas.
Instruction: 
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
Area Description: 
Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward
Forcast Office: 
NWS Honolulu HI
Sender: 
w-nws.webmaster@noaa.gov