September 25, 1810 Earthquake: Oga, Japan
A magnitude 6.6 earthquake struck Oga, Japan on September 25, 1810. It killed 59 people.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- September 25, 1810
- Place
- Oga, Japan
- Magnitude
- 6.6 (Ms)
- Tsunami
- Yes: the tsunami it caused
- Epicenter
- 39.900° N, 139.900° E
- Country
- Japan
The toll
- Deaths
- 59
- Damage
- Severe (about $5 to $25 million)
- Houses destroyed
- 1,804
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.
Reference #414:
On September 25, 1810, at 14:00 [local time], there was a strong earthquake on the Oga Peninsula. The source was apparently situated in the vicinity of the Kampu volcano, in the eastern half of Oga. The zone of destruction extended fo 30 km from Funakoshi to Kurookan. There were 1,804 homes destroyed or seriously damaged, 59 people died. Large avalanches and landslides were observed; there were changes in the level of ground waters and the discharge of springs. According to doubtful data, a tsunami was observed on the coast of the Oga Peninsula.
Iida et al. (1967): 39.9 N., 139.9 E.; M=6.6, m=0.
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- October 31, 1341, Jusanko, Japan
- March 8, 1766, Hirosaki, Japan
- July 10, 1804, Kisakata, Japan
- June 19, 1694, Ugo, Japan
- August 31, 1896, Senhoku, Ugo, Japan
- October 18, 1644, NW. Honshu Island, Japan
- May 26, 1983, Akita, Honshu, Japan
- March 15, 1914, Senhoku, Japan
- December 7, 1833, NW, Honshu, Japan
- May 27, 1704, N of Nosiro, Japan
- June 16, 1964, W Coast, Honshu, Japan
- May 1, 1939, NW, Honshu, Japan
- June 13, 2008, Tokyo, Honshu, Japan
- February 8, 1793, Aomori, Japan
- July 23, 2008, N, Honshu, Japan
More
Significant earthquakes of 1810The 1800sRecent earthquakes near hereThis day in weather history
Sources
Significant earthquakes 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 earthquake 1587.