April 11, 2011 Earthquake: Honshu, Japan
A magnitude 6.6 earthquake struck Honshu, Japan on April 11, 2011 at 08:16:12 UTC, 11 km below the surface. It killed 7 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
- April 11, 2011
- Time
- 08:16:12 UTC
- Place
- Honshu, Japan
- Magnitude
- 6.6 (Mw)
- Focal depth
- 11 km (7 mi)
- Tsunami
- None recorded
- Epicenter
- 37.001° N, 140.401° E
- Country
- Japan
The toll
- Deaths
- 7
- Damage
- Limited (under about $1 million)
- Houses destroyed
- 3
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.
Six people killed by landslides at Iwaki and one person killed in Ibaraki. Felt (V) at Misawa and (IV) at Akiruno, Tokyo, Yokohama, Yokosuka and Zama. Felt in much of central and northern Honshu. Recorded (6L JMA) in Fukushima and Ibaraki. (reference #1053)
At least six people were killed when a magnitude-6.4 earthquake struck Japan Tuesday morning, a local fire department said. The six were killed when a landslide triggered by the quake buried three homes in Iwaki, the city's fire department said. Three people were rescued and hospitalized, and fire officials were working to rescue an unknown number of others believed to be trapped, the department said. (reference #9543)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- November 11, 1855, Tokyo, Japan
- September 27, 1611, Aidu, Japan
- December 18, 1828, Sandyo IN Etigo, Japan
- July 29, 1649, Tokyo, Japan
- March 11, 1853, Odawara, Japan
- October 23, 2004, Niigata Prefecture, Honshu, Japan
- July 6, 1905, Off Fukushima, Japan
- April 21, 1659, Aidu, Japan
- June 16, 1964, W Coast, Honshu, Japan
- June 12, 1978, Sanriku, Japan
- June 20, 1894, Tokyo, Japan
- September 21, 1931, Honshu, Japan
- July 16, 2007, W Coast, Honshu, Japan
- January 15, 1924, Sagami, Japan
- March 16, 2022, Off Fukushima, Japan
More
Significant earthquakes of 2011The 2000sEvery quake the USGS located in 2011Recent 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 9841.