Flash Flood Warning Issued for Oahu in Honolulu County
This alert is no longer in effect.
NOAA issued it on May 23, 2026, 3 months ago. Warnings of this kind stay in effect for hours to a few days, so this page is a historical record of what was issued, not a current warning. For conditions where you are right now, check weather.gov (US), weather.gc.ca (Canada), the Met Office (UK), or the Bureau of Meteorology (Australia).
Areazine synthesizes this NWS weather alert directly from NOAA's official public data feed. See our methodology for full source attribution and refresh cadence.
NWS Honolulu has issued a Flash Flood Warning for Oahu effective until 3:30 PM HST due to heavy rainfall rates of 0.5 to 1.5 inches per hour.
Read this weather record in 30 seconds
- Record type
- Flash Flood Warning
- Affected area
- Oahu, Honolulu County, HI
- Issued
- May 23, 2026
- Issuing authority
- NWS Honolulu HI
Flood notices turn on location and timing. Treat the named area as this record's scope; do not assume nearby counties, parishes, or waterways were included.
Record status: historical. It was issued 3 months ago; use the issuing agency's live warning service for current conditions in Oahu, Honolulu County, HI.
Alert Details
A Flash Flood Warning has been issued by the National Weather Service in Honolulu HI. The alert is effective from May 15, 2026 at 1:32 PM HST until May 15, 2026 at 3:30 PM HST.
Affected Areas
The warning covers the island of Oahu in Honolulu County. Specific locations that will experience flash flooding include Honolulu, Waipio, Mililani, Pearl City, Waikele, Wahiawa, Wheeler Field, Aiea, Waipahu, Kunia, Halawa, Waiahole, Waikane, Schofield Barracks, Salt Lake, Moanalua, Kahaluu, Ahuimanu, Iroquois Point and Ewa Beach.
What You Should Do
Stay away from streams, rivers, drainage ditches, and culverts, even if they are currently dry.
Expected Conditions
At 1:32 PM HST, radar and automated rain gauges indicated heavy rain falling over many areas on Oahu at a rate of 0.5 to 1.5 inches per hour. Flash flooding is ongoing or expected to begin shortly. Hazard includes flash flooding caused by heavy rain. Impacts include flooding in drainages, streams, rivers, roads, properties, and other low-lying areas. Public road closures possible in some areas. Landslides are possible in steep terrain.
Timeline
The warning is in effect from 1:32 PM HST to 3:30 PM HST on May 15, 2026.
Original source: NOAA Official Notice ↗
Related Weather Alerts
All Weather Alerts →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this NWS weather alert: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,215 characters here).
Similar severity timing
Same severity (high) notices issued closest in time to May 23, 2026.
Frequently Asked Questions
Common questions about this NWS weather alert.