Headline:
Flood Watch issued March 21 at 4:56PM HST until March 22 at 6:00PM HST by NWS Honolulu HI
Event:
Flood Watch
Urgency:
Future
Effective:
March 21, 2026 - 7:56pm
Expires:
March 22, 2026 - 10:00am
Description:
...FLOOD WATCH CONTINUES FOR OAHU MOLOKAI MAUI LANAI KAHOOLAWE AND
THE BIG ISLAND...
* WHAT...Flash flooding caused by excessive rainfall is possible.
* WHERE...Oahu, Maui, Molokai, Lanai, Kahoolawe, and the Big Island.
* WHEN...Through Sunday 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...
- A kona low west of the islands has drawn abundant moisture
northward. Rounds of moderate to heavy rainfall are
anticipated. The heaviest rain is expected to last through
tonight, except for the Big Island where the heaviest rain is
expected Sunday.
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; Lanai Mauka; Kahoolawe; Maui Windward West; Maui Leeward West; Haleakala Summit; Kona; Kohala; Big Island Interior; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward; 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