Major Earthquakes in Japan Since 2011
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At 4:43 in the afternoon of August 8, 2024, an earthquake in the Hyūganada Sea just off the shore of Miyazaki Prefecture caused shaking of lower 6 on the Japanese seismic intensity scale in the city of Nichinan. The Japan Meteorological Agency estimated the quake’s magnitude as 7.1 and issued tsunami alerts for Miyazaki, Ōita, and Kagoshima Prefectures on Kyūshū, along with Ehime and Kōchi Prefectures on the neighboring island of Shikoku. Tsunami waves of up to 50 centimeters were recorded in Miyazaki, and the JMA announced it was commencing an investigation of potential connections between the earthquake and the nearby Nankai Trough, expected to be the site of a major quake at some point in the future.
Earthquakes of Lower 6 Intensity or Above Since the Great East Japan Earthquake
| Date (Time) | Hypocenter | Magnitude | Seismic Intensity |
|---|---|---|---|
| August 8, 2024 (16:43) | Hyūganada Sea | 7.1 | Lower 6 |
| April 17, 2024 (23:14) | Bungo Channel | 6.6 | Lower 6 |
| January 1, 2024 (16:10) | Noto Peninsula, Ishikawa Prefecture | 7.6 | 7 |
| May 5, 2023 (14:42) | Noto Peninsula, Ishikawa Prefecture | 6.5 | Upper 6 |
| June 19, 2022 (15:08) | Noto Peninsula, Ishikawa Prefecture | 5.2 | Lower 6 |
| March 16, 2022 (23:36) | Off Fukushima Prefecture | 7.3 | Upper 6 |
| Feb 13, 2021 (23:07) | Off Fukushima Prefecture | 7.3 | Upper 6 |
| June 18, 2019 (22:22) | Off Yamagata Prefecture | 6.7 | Upper 6 |
| Feb 21, 2019 (21:22) | Central/eastern Iburi, Hokkaidō | 5.8 | Lower 6 |
| Jan 3, 2019 (18:10) | Kumamoto, Kumamoto Prefecture | 5.1 | Lower 6 |
| Sep 6, 2018 (3:07) | Central/eastern Iburi, Hokkaidō | 6.7 | 7 |
| June 18, 2018 (7:58) | Northern Osaka Prefecture | 6.1 | Lower 6 |
| Dec 28, 2016 (21:38) | Northern Ibaraki Prefecture | 6.3 | Lower 6 |
| Oct 21, 2016 (14:07) | Central Tottori Prefecture | 6.6 | Lower 6 |
| June 16, 2016 (14:21) | Uchiura Bay, off southwestern Hokkaidō | 5.3 | Lower 6 |
| April 16, 2016 (9:48) | Kumamoto, Kumamoto Prefecture | 5.4 | Lower 6 |
| April 16, 2016 (3:55) | Aso, Kumamoto Prefecture | 5.8 | Upper 6 |
| April 16, 2016 (1:45) | Kumamoto, Kumamoto Prefecture | 5.9 | Lower 6 |
| April 16, 2016 (1:25) | Kumamoto, Kumamoto Prefecture | 7.3 | 7 |
| April 15, 2016 (3:46) | Kumamoto, Kumamoto Prefecture | 6.4 | Upper 6 |
| April 14, 2016 (22:07) | Kumamoto, Kumamoto Prefecture | 5.8 | Lower 6 |
| April 14, 2016 (21:26) | Kumamoto, Kumamoto Prefecture | 6.5 | 7 |
| Nov 22, 2014 (22:08) | Northern Nagano Prefecture | 6.7 | Lower 6 |
| April 13, 2013 (5:33) | Near Awajishima, Hyōgo Prefecture | 6.3 | Lower 6 |
| April 12, 2011 (14:07) | Central Fukushima Prefecture | 6.4 | Lower 6 |
| April 11, 2011 (17:16) | Eastern Fukushima Prefecture | 7.0 | Lower 6 |
| April 7, 2011 (23:32) | Off Miyagi Prefecture | 7.2 | Upper 6 |
| March 15, 2011 (22:31) | Eastern Shizuoka Prefecture | 6.4 | Upper 6 |
| March 12, 2011 (5:42) | Northern Nagano Prefecture | 5.3 | Lower 6 |
| March 12, 2011 (4:31) | Northern Nagano Prefecture | 5.9 | Lower 6 |
| March 12, 2011 (3:59) | Northern Nagano Prefecture | 6.7 | Upper 6 |
| March 11, 2011 (15:15) | Off Ibaraki Prefecture | 7.6 | Upper 6 |
| March 11, 2011 (14:46) | Off Sanriku area | 9.0 | 7 |
Created by Nippon.com based on data from the Japan Meteorological Association. Yellow highlighting indicates temblors connected with the Great East Japan Earthquake, green highlighting the Kumamoto Earthquakes.
(Originally published in Japanese. Banner photo © Pixta.)