October 6, 2023 Tsunami: Izu Islands, Japan
A tsunami caused by a magnitude 6.1 earthquake began at Izu Islands, Japan on October 6, 2023 at 01:31:17 UTC. The water rose as high as 0.08 meters. Its effects were recorded at 4 places.
Where the waves reached
The source (white) and every runup with a place, colored by the water height recorded there. A ring is a runup NCEI marks doubtful.
- Under 1 m
- 1 to 3 m
- 3 to 10 m
- 10 to 30 m
- 30 m and more
- Height not recorded
The tsunami
- Date
- October 6, 2023, 01:31:17 UTC
- Source
- Izu Islands, Japan
- Cause
- Earthquake
- Earthquake
- Magnitude 6.1, 10 km deep
- Maximum water height
- 0.08 m (0.3 ft)
- Runups recorded
- 4
- Warning
- Local Tsunami Warning issued by a regional or national warning center
- Waters
- Ocean
- How certain
- Definite tsunami
- Source location
- 30.141° N, 139.968° E
The toll
The record gives no deaths, injuries or damage for this tsunami.
Every runup
Nearest the source first. Heights are above sea level at the time; a tide gauge reads half the wave’s full height.
| Where | Country | Km from source | Water height, m | Inland, m | Measured by | First wave, UTC | Deaths |
|---|---|---|---|---|---|---|---|
| Yaene, Hachijo Island | Japan | 329 | 0.2 | Tide gauge (half the maximum wave height) | day 6, 02:00 | ||
| Kaminato, Hachijo Island | Japan | 332 | 0.05 | Tide gauge (half the maximum wave height) | day 6, 02:00 | ||
| Odomari | Japan | 896 | 0.06 | Tide gauge (half the maximum wave height) | |||
| Nakanoshima (Nakano Island) | Japan | 977 | 0.08 | Tide gauge (half the maximum wave height) |
More
Every tsunami in 2023The 2000sTsunamis of JapanThe earthquakeThis day in weather historyAlerts in force
Sources
Tsunami events and runups from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI tsunami event 6007.