June 9, 1646 Earthquake: Sendai, Sanriku, Japan
A magnitude 7.6 earthquake struck Sendai, Sanriku, Japan on June 9, 1646. 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
- June 9, 1646
- Place
- Sendai, Sanriku, Japan
- Magnitude
- 7.6 (Ms)
- Tsunami
- Yes: the tsunami it caused
- Epicenter
- 37.700° N, 141.700° E
- Country
- Japan
The toll
- Damage
- Severe (about $5 to $25 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.
1646, June 9. Japan, Sendai: (Yzen, Ugo, Rikuchu, Mutsu), intensity III which corresponds to an earthquake which destroyed towns and devastated districts. (reference #1055)
1646, June 9. 37.7 N, 141.7 E, magnitude 7.6. The castles of Sendai and Shiroishi were devastated. No severe damage due to the tsunami was recorded. (reference #1065)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- March 11, 2011, Honshu, Japan
- September 27, 1611, Aidu, Japan
- December 18, 1828, Sandyo IN Etigo, Japan
- July 6, 1905, Off Fukushima, Japan
- April 21, 1659, Aidu, Japan
- June 12, 1978, Sanriku, Japan
- June 13, 2008, Tokyo, Honshu, Japan
- April 11, 2011, Honshu, Japan
- March 16, 2022, Off Fukushima, Japan
- April 7, 2011, Near E Coast Honshu, Japan
- February 13, 2021, Off Fukushima, Japan
- November 5, 1938, Near E Coast Honshu, Japan
- October 2, 1678, Sanriku,rikuchu, Japan
- April 30, 1962, Sendai, Honshu, Japan
- July 20, 1835, Sanriku, Japan
More
Significant earthquakes of 1646The 1600sRecent 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 966.