November 25, 1930 Earthquake: Idu, Honshu, Japan
A magnitude 7.1 earthquake struck Idu, Honshu, Japan on November 25, 1930 at 19:02:47 UTC, 19 km below the surface. It killed 259 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
- November 25, 1930
- Time
- 19:02:47 UTC
- Place
- Idu, Honshu, Japan
- Magnitude
- 7.1 (Ms)
- Focal depth
- 19 km (12 mi)
- Tsunami
- None recorded
- Epicenter
- 35.000° N, 139.000° E
- Country
- Japan
The toll
- Deaths
- 259
- Injuries
- 1,285
- Damage
- Extreme (about $25 million or more)
- Houses destroyed
- 8,099
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.
1930, Nov. 26, 04:03 J.S.T., 35.1 N, 139 E, magnitude 7.0, 272 deaths. (reference #1152)
1930, Nov 25, 19:02:47 UTC, 35 N, 139 E, magnitude 7.1, depth 19 km. (reference #130)
1930, Nov. 25, 19:02:47 UTC, 35 N, 139 E, magnitude 7.1 MS, shallow depth. (reference #88)
1930, Nov 26, 35 N, 139 E, 259 deaths, 8099 buildings destroyed in northern Idu. (reference #1068)
1930, Nov 26, 259 deaths, 2142 houses destroyed. (reference #1006)
1930, Nov. 26, 259 deaths, 1285 injured, 2142 dwellings and 5957 houses of various kinds destroyed. (reference #516)
1930, Nov. 25, 19:03.0 UTC, 35.1 N, 138.8 E. (reference #45)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- September 1, 1923, Tokyo, Yokohama, Japan
- May 27, 1293, Kamakura, Japan
- October 27, 1891, Mino-Owari, Japan
- November 11, 1855, Tokyo, Japan
- December 30, 1703, Off SW Boso Peninsula, Japan
- September 20, 1498, Enshunada Sea, Japan
- January 12, 1945, S, Honshu, Japan
- October 28, 1707, Enshunada, Japan
- February 3, 1605, Enshunada, Japan
- December 23, 1854, Enshunada Sea, Japan
- December 17, 1096, Enshunada, Japan
- April 9, 1858, N, Hida, Japan
- September 12, 1495, Kamakura, Japan
- July 29, 1649, Tokyo, Japan
- March 1, 1633, Odawara, Japan
More
Significant earthquakes of 1930The 1900sEvery quake the USGS located in 1930Recent 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 3431.