Headline:
Flood Watch issued August 15 at 3:55AM HST until August 17 at 6:00AM HST by NWS Honolulu HI
Event:
Flood Watch
Urgency:
Future
Effective:
August 15, 2026 - 6:55am
Expires:
August 15, 2026 - 9:00pm
Description:
Tropical Cyclone Lala will bring heavy rain to the Big Island and
Maui County through late tonight and Oahu, Kauai, and Niihau this
evening through late Sunday night.
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Kauai, Niihau, and Oahu.
* WHEN...From this evening through late Sunday night.
* IMPACTS...Flood prone roads and other low lying areas may be closed
due to elevated runoff and overflowing streams. Urban areas may
receive more significant flooding and property damage due to rapid
runoff.
* ADDITIONAL DETAILS...
- Tropical Cyclone Lala will bring periods of heavy rain to Kauai,
Niihau, and Oahu this evening through late Sunday night. Current
forecast has rainfall amounts of 4 to 6 inches with local amounts
up to 8 inches.
Instruction:
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
Area Description:
Niihau; Kauai Southwest; Kauai Mountains; Waianae Coast; Oahu North Shore; Olomana; Central Oahu; Waianae Mountains; Kauai North; Kauai East; Kauai South; East Honolulu; Honolulu Metro; Ewa Plain; Koolau Windward; Koolau Leeward
Forcast Office:
NWS Honolulu HI
Sender:
w-nws.webmaster@noaa.gov