September 21, 1510 Earthquake: Seionaikai, Japan
A magnitude 6.7 earthquake struck Seionaikai, Japan on September 21, 1510. It caused a tsunami.
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 21, 1510
- Place
- Seionaikai, Japan
- Magnitude
- 6.7 (Ms)
- Tsunami
- Yes: the tsunami it caused
- Epicenter
- 34.600° N, 135.400° E
- Country
- Japan
- Region
- East Asia
The toll
- Damage
- Limited (under about $1 million)
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.
1510, September 21. There was a strong earthquake which caused destruction at some places in Osaka Prefecture. There were many aftershocks. A tsunami was observed on the coast of Osaka Bay. [34.6 N, 135.7 E; M=6.7, m=0] (reference #414).
Sources NCEI cites
The publications NCEI lists for this record. The numbers match the “reference #” notes in its account above.
- #150 Iida, Kumizi (1984). Catalog of tsunamis in Japan and its neighboring countries. Aichi Institute of Technology, Yachigusa, Yakusa-cho, Toyota-shi, 470-03, Japan, 52 p.
- #414 Soloviev, S.L., and Ch.N. Go (1974). A catalogue of tsunamis on the western shore of the Pacific Ocean [dates include 173-1968. Academy of Sciences of the USSR, Nauka Publishing House, Moscow, 439 p. [Canadian Translation of Fisheries and Aquatic Sciences no. 5077, 1984, translation available from Canada Institute for Scientific and Technical Information, National Research Council, Ottawa, Ontario, Canada K1A OS2, 447 p.]
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- January 18, 1586, Ise Bay, Japan
- October 27, 1891, Mino-Owari, Japan
- January 16, 1995, Kobe, Awaji-Shima, Nishinomiya, SW Honshu, Japan
- October 28, 1707, Nankaido, Japan
- February 3, 1605, Nankaido, Japan
- March 7, 1927, SW, Honshu, Japan
- December 24, 1854, Nankaido, Japan
- January 12, 1945, S, Honshu, Japan
- September 10, 1943, S, Honshu, Japan
- December 20, 1946, S Coast, Honshu, Japan
- July 9, 1854, Iga, Ise, Yamato, Japan
- December 7, 1944, Off Southeast Coast Kii Peninsula, Japan
- December 20, 1711, Seionaikai, Japan
- August 3, 1361, Nankaido, Japan
- June 16, 1662, Yamasiro, Japan
More
Significant earthquakes of 1510The 1500sRecent 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 2026-10-01. NCEI earthquake 5950.