Headline:
Flash Flood Warning issued March 20 at 1:05PM HST until March 21 at 1:15PM HST by NWS Honolulu HI
Event:
Flash Flood Warning
Urgency:
Immediate
Effective:
March 20, 2026 - 4:05pm
Expires:
March 21, 2026 - 4:15pm
Description:
FFWHFO
The National Weather Service in Honolulu has extended the
* Flash Flood Warning for...
A Dam Failure on the Kaukonahua Stream below Wahiawa Dam on...
The island of Oahu in Honolulu County
* Until 115 PM HST Saturday.
* At 105 PM HST, emergency management reported the imminent failure
of Wahiawa Dam.
HAZARD...Flash flooding from the imminent failure of Wahiawa
Dam.
SOURCE...Emergency management.
IMPACT...Flooding of areas downstream from the Wahiawa Dam
along the Kaukonahua Stream.
* The nearest downstream area from the dam is Waialua, Haleiwa, and
Kaukonahua Stream.
This includes the following streams and drainages...
Poamoho Stm- Dole Fields, Poamoho Stm- Kaukonahua Hwy, Kaukonahua
Stm- Schofield, Mohiakea Gul, Waialua Town, Kaukonahua Stm- N Fork
Wahiawa, Kaukonahua Stm- Wahiawa, Kiikii Stm- Waialua,
Helemano/Opaeula Stm- Haleiwa, Kaukonahua Stm- Waialua and Anahulu
R- Haleiwa.
Flooding is occurring along the Kaukonahua Stream.
This warning may need to be extended beyond 115 PM HST Saturday if
flooding persists.
Area Description:
Oahu in Honolulu, HI
Forcast Office:
NWS Honolulu HI
Sender:
w-nws.webmaster@noaa.gov