July 1, 2000 Tsunami: Kozu-Shima Island, Honshu, Japan
A tsunami caused by a magnitude 6.1 earthquake began at Kozu-Shima Island, Honshu, Japan on July 1, 2000 at 07:01:55 UTC. The water rose as high as 0.07 meters. Its effects were recorded at 4 places. It killed 1 person, counting the earthquake or eruption that caused it.
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
- July 1, 2000, 07:01:55 UTC
- Source
- Kozu-Shima Island, Honshu, Japan
- Cause
- Earthquake
- Earthquake
- Magnitude 6.1, 10 km deep
- Volcano
- The eruption that caused it
- Maximum water height
- 0.07 m (0.2 ft)
- Runups recorded
- 4
- Waters
- Ocean
- How certain
- Definite tsunami
- Source location
- 34.221° N, 139.131° E
The toll
- Deaths
- 1 with the earthquake or eruption that caused it
- Injuries
- Many (about 101 to 1,000) with the earthquake or eruption that caused it
- Damage
- Limited (under about $1 million) with the earthquake or eruption that caused it
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
What the record says
NCEI’s account, from the sources it cites.
One person killed by a landslide, several injured, minor damage and power outages on Kozu-shima. A local tsunami was generated with a recorded wave height of 7 cm at Minamiizu. (reference #1053)
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 |
|---|---|---|---|---|---|---|---|
| Miyake Island | Japan | 37 | 0.06 | Tide gauge (half the maximum wave height) | |||
| Minami-Izu | Japan | 49 | 0.03 | Tide gauge (half the maximum wave height) | |||
| Okada | Japan | 67 | 0.07 | Tide gauge (half the maximum wave height) | |||
| Mera | Japan | 100 | 0.03 | Tide gauge (half the maximum wave height) |
More
Every tsunami in 2000The 2000sTsunamis of JapanThe earthquakeThe eruptionThis 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 2340.