Flood, Honolulu
- When
- May 16, 4:00 PM HST to May 17, 4:00 AM HST
- Where
- Honolulu County, Makakilo City
- Injuries
- 6 direct, 0 indirect
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 21.455, -157.961 (the zone’s center; the record gives no point)
Flood in Hawaii, May 16 to 17, 1999
A thunderstorm which developed over central Oahu moved over to the windward side of Oahu. 73 of an inch in fifteen minutes was recorded after 5:00 pm.
Where it happened
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 6
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 1
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
What happened
The episode as NWS HFO wrote it up.
A thunderstorm which developed over central Oahu moved over to the windward side of Oahu. As much as 0.73 of an inch in fifteen minutes was recorded after 5:00 pm. Ponding of water was observed on road surfaces.Police reported 35 traffic cases during a 12-hour period starting at 4 p.m., due to heavy rainfall that drenched parts of Oahu. There were several weather-related power outages, including a fallen pole at Waialua that affected service to 300 customers for about two hours.The total amount of rainfall for this event is as follows: Waihee Pump 2.67 in. Palisades 2.02 in. Manoa 1.24 in. Mililani 2.03 in. Wheelers AFS 2.29 in.
The radar
The national radar mosaic for the moment the first event began.
Event by event
1 flood. Local standard time, as filed.
What these are
- Flood
- Flooding that develops more slowly than a flash flood: rivers leaving their banks, or water standing over land for an extended time.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Tornado in Iowa, May 16, 1999
- Tornado in Iowa, May 16, 1999
- Tornadoes and Flash Flooding in Iowa, May 16 to 17, 1999
- Flash Flooding and Flood in Iowa, May 16 to 17, 1999
- Tornado in Iowa, May 16, 1999
- Hail and Damaging Winds in Kansas, May 16, 1999
- Flooding in Iowa, May 16 to 20, 1999
- Flash Flooding and Flood in Oklahoma, May 16 to 17, 1999
- Rip Current in California, May 16, 1999
- Flash Flooding and Flooding in Wisconsin, May 16 to 17, 1999
- Tornadoes and Flash Flood in Kansas, May 16 to 17, 1999
- Hail in Kansas, May 16, 1999
More
Every storm in Hawaii in 1999Every state in 1999This day in weather historyWarnings in Hawaii, May 1999
Sources
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5699460.