Headline:
Flash Flood Warning issued September 6 at 3:56PM HST until September 6 at 5:30PM HST by NWS Honolulu HI
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
September 6, 2026 - 6:56pm
Expires:
September 6, 2026 - 8:30pm
Description:
At 356 PM HST, Doppler radar indicated moderate to locally heavy
showers continue over the Koolau Mountains and portions of windward
Oahu, with the heaviest rain falling at a rate of 1 to 2 inches per
hour. Water levels in the Waiahole and Waikane Streams have declined
slightly but remain high enough to support water overflowing onto
Kamehameha Highway.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Gauges reported.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Honolulu, Kahaluu, Waiahole, Ahuimanu, Waikane, Kaneohe, Kaaawa,
Aiea, Kaneohe Marine Base, Halawa, Moanalua and Pearl City.
Instruction:
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Area Description:
Oahu in Honolulu, HI
Forcast Office:
NWS Honolulu HI
Sender:
w-nws.webmaster@noaa.gov