NWS Honolulu HIFF.W 0047August 16, 2026
Flash Flood Warning: Oahu in Honolulu, HI
The National Weather Service office in Honolulu issued a flash flood warning for Oahu in Honolulu in Hawaii, which was in force until 5:45 p.m. local time on August 16. It was the 47th flash flood warning the NWS office in Honolulu issued in 2026. Hawaii had 7 flash flood warnings in August 2026, against 3 in an average August of 2008-2025 (Hawaii's flash flood warnings by year).
ExpiredWarning
In force for 2.9 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Honolulu HI
- Area
- Oahu in Honolulu
- State
- Hawaii
- Level
- Warning
- Issued
- 2:52 p.m. HST, August 16, 2026
- Expires
- 5:45 p.m. HST, August 16, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Immediate
- VTEC event
- PHFO FF.W 0047
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
FFWHFO The National Weather Service in Honolulu has issued a * Flash Flood Warning for... The island of Oahu in Honolulu County * Until 545 PM HST. * At 252 PM HST, Doppler radar indicated a band of heavy rain moving over the windward side of Oahu, focused over the Koolau Mountains. Rain was falling at a rate of 1 to 2.5 inches per hour. Waiahole and Manoa Streams are elevated once again. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar indicated. 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, Waipio, Waiahole, Waikane, Kahaluu, Ahuimanu, Aiea, Pearl City, Halawa, Moanalua, Mililani and Salt Lake.
What the agency told people to do
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.