Flash Flood, Hawaii
- When
- December 10, 10:00 AM HST to 9:00 PM HST
- Where
- Hawaii County, Ookala
- Reported by
- OFFICIAL NWS OBS.
- Coordinates
- 19.602, -155.523 (the zone’s center; the record gives no point)
Flash Flood in Hawaii, December 10, 1999
Honolii Beach in Hilo was closed for a time due to the Wailuku River raging after heavy downpours.
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
- 0
- 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.
Honolii Beach in Hilo was closed for a time due to the Wailuku River raging after heavy downpours.
The radar
The South Shore radar (PHWA), 57 km away, was scanning. The volume nearest the first event began at 19:57 UTC.
Event by event
1 flash flood. Local standard time, as filed.
What these are
- Flash Flood
- Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- High Wind in California, December 10 to 11, 1999
- High Wind and Strong Wind in Massachusetts, December 10 to 11, 1999
- High Wind and Strong Wind in New Jersey, December 10 to 11, 1999
- Heavy Snow in Utah, December 10, 1999
- Strong Wind in Pennsylvania, December 10 to 11, 1999
- High Wind and Cold in Alaska, December 10 to 12, 1999
- Strong Wind in California, December 10, 1999
- Freezing Fog in New Hampshire, December 10, 1999
- Frost and Freeze in California, December 10 to 11, 1999
- Freezing Fog in Maine, December 10, 1999
- Flash Flood in Hawaii, December 10, 1999
- Flash Flood in Hawaii, December 10, 1999
More
Every storm in Hawaii in 1999Every state in 1999This day in weather historyWarnings in Hawaii, December 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: 5720882.