| Date & time | May 16, 1968 00:49:02 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 8.2 |
| Depth | 29.9 km |
| Epicenter latitude / longitude | 40.86°N / 143.435°E  (North Pacific Ocean, Japan) |
| Antipode | 40.86°S / 36.565°W |
| Shaking intensity | Severe shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Osore-yama (206 km / 128 mi) |
| Nearby towns and cities | 168 km (104 mi) ENE of Hachinohe (pop: 239,000) | Show on map | Quakes nearby 173 km (108 mi) E of Misawa (pop: 42,800) | Show on map | Quakes nearby 185 km (115 mi) NE of Miyako (pop: 51,700) | Show on map | Quakes nearby 186 km (116 mi) SSE of Shizunai-furukawachō (pop: 22,400) | Show on map | Quakes nearby 192 km (119 mi) ESE of Mutsu (pop: 49,200) | Show on map | Quakes nearby 200 km (124 mi) NE of Yamada (Shimohei-gun) (pop: 20,100) | Show on map | Quakes nearby 227 km (141 mi) E of Aomori (pop: 298,400) | Show on map | Quakes nearby 233 km (145 mi) NE of Morioka (pop: 295,200) | Show on map | Quakes nearby 300 km (186 mi) SE of Sapporo (pop: 1,883,000) | Show on map | Quakes nearby 661 km (411 mi) NNE of Tokyo (pop: 8,336,600) | Show on map | Quakes nearby |
| Estimated seismic energy released | 1.3 x 1017 joules (34970 gigawatt hours, equivalent to 3 x 107 tons of TNT or 1880.6 atomic bombs!) | about seismic energy |
| Mag. | Depth | Location | Source |
| 8.2 | 30 km | off the east coast of Honshu, Japan | USGS |
Date and time | Mag Depth | Location | Details |
| Apr 9, 1971 06:08 52 years ago | 5.6 17 km | 243 km NW of Sapporo, Hokkaido, Japan | More |
| Apr 6, 1971 00:17 52 years ago | 5.5 35 km | 88 km SE of Kushiro, Hokkaido, Japan | More |
| Apr 4, 1971 18:39 52 years ago | 6.1 35 km | 56 km E of Kasakai-jima Island, Japan | More |
| Mar 25, 1971 16:19 52 years ago | 5.7 46 km | 58 km E of Kasakai-jima Island, Japan | More |
| Mar 22, 1971 10:40 52 years ago | 5.5 30 km | 112 km E of Iwaki, Fukushima, Japan | More |
| Mar 15, 1971 05:35 52 years ago | 5.7 34 km | 143 km SE of Obihiro, Hokkaido, Japan | More |
| Feb 25, 1971 19:27 52 years ago | 5.6 19 km | 12 km E of Jōetsu, Niigata, Japan | More |
| Jan 18, 1971 05:02 52 years ago | 5.5 45 km | 86 km S of Shizunai-furukawachō, Hidaka-gun, Hokkaido, Japan | More |
| Jan 6, 1971 06:04 52 years ago | 5.6 35 km | 70 km E of Mito, Ibaraki, Japan | More |
| Dec 6, 1970 20:20 52 years ago | 6.5 40 km | 133 km S of Obihiro, Hokkaido, Japan | More |
| Nov 20, 1970 13:48 52 years ago | 5.9 35 km | 49 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Oct 16, 1970 05:26 52 years ago | 6.2 15 km | 17 km SE of Yokote, Akita, Japan | More |
| Oct 14, 1970 21:14 52 years ago | 6.1 35 km | 47 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Oct 14, 1970 18:15 52 years ago | 6.4 33 km | Russia | More |
| Oct 14, 1970 16:00 52 years ago | 5.7 32 km | Russia | More |
| Oct 8, 1970 23:36 52 years ago | 5.9 30 km | 64 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Sep 14, 1970 09:44 53 years ago | 6.4 49 km | 96 km NE of Ishinomaki, Honshu-miyagi-ken, Japan | More |
| Jul 9, 1970 12:11 53 years ago | 6.1 25 km | 137 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Jul 9, 1970 11:24 53 years ago | 5.7 26 km | 135 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Jun 22, 1970 21:33 53 years ago | 6.0 30 km | 84 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Jun 10, 1970 16:17 53 years ago | 6.0 45 km | 88 km S of Ostrov Krab Island, Sakhalin Oblast, Russia | More |
| May 29, 1970 04:31 53 years ago | 5.6 70 km | 28 km E of Shikotan, Sakhalin Oblast, Russia | More |
| May 27, 1970 23:56 53 years ago | 6.0 30 km | 138 km E of Hachinohe, Aomori, Japan | More |
| May 27, 1970 22:35 53 years ago | 6.2 15 km | 143 km E of Hachinohe, Aomori, Japan | More |
| May 27, 1970 19:05 53 years ago | 5.9 10 km | 134 km E of Hachinohe, Aomori, Japan | More |
| Apr 29, 1970 05:55 53 years ago | 5.6 45 km | Russia, 85 km E of Nemuro, Hokkaido, Japan | More |
| Apr 18, 1970 23:25 53 years ago | 6.1 28 km | Russia, 142 km E of Nemuro, Hokkaido, Japan | More |
| Apr 16, 1970 01:55 53 years ago | 6.0 25 km | 215 km SE of Tokyo, Japan | More |
| Apr 9, 1970 00:00 53 years ago | 5.7 110 km | 58 km E of Ostrov Sredniy Island, Kurilsky District, Sakhalin Oblast, Russia | More |
| Apr 1, 1970 14:23 53 years ago | 5.7 65 km | 19 km N of Miyako, Iwate, Japan | More |
| Mar 23, 1970 00:20 53 years ago | 5.7 143 km | Kitaakita-shi, 22 km W of Ōdate, Akita, Japan | More |
| Mar 10, 1970 04:58 53 years ago | 6.2 55 km | 101 km SE of Kuril'sk, Sakhalin Oblast, Russia | More |
| Mar 9, 1970 00:50 53 years ago | 5.9 25 km | 138 km E of Miyako, Iwate, Japan | More |
| Feb 26, 1970 23:29 53 years ago | 6.1 26 km | 76 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Feb 26, 1970 23:05 53 years ago | 5.9 21 km | 76 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Feb 3, 1970 19:17 53 years ago | 5.7 29 km | Russia | More |
| Feb 2, 1970 18:05 53 years ago | 5.8 26 km | Russia | More |
| Feb 2, 1970 17:49 53 years ago | 6.0 30 km | 82 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Feb 2, 1970 17:22 53 years ago | 5.7 31 km | Russia | More |
| Jan 20, 1970 17:33 53 years ago | 6.4 35 km | Hiroo-gun, 46 km S of Obihiro, Hokkaido, Japan | More |
| Dec 28, 1969 04:53 53 years ago | 5.7 29 km | 100 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Dec 18, 1969 13:32 53 years ago | 6.3 345 km | 50 km SW of Korsakov, Sakhalin Oblast, Russia | More |
| Dec 4, 1969 08:50 53 years ago | 5.7 29 km | 252 km S of Kushiro, Hokkaido, Japan | More |
| Oct 25, 1969 12:03 53 years ago | 5.6 45 km | 97 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Sep 29, 1969 17:58 54 years ago | 5.8 25 km | 99 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Sep 27, 1969 04:02 54 years ago | 5.6 49 km | 41 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Sep 13, 1969 11:52 54 years ago | 5.7 34 km | Russia, 169 km E of Nemuro, Hokkaido, Japan | More |
| Sep 6, 1969 07:43 54 years ago | 5.7 42 km | 61 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Sep 4, 1969 21:12 54 years ago | 5.7 30 km | 59 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 30, 1969 08:28 54 years ago | 6.1 27 km | 90 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 30, 1969 07:54 54 years ago | 5.7 35 km | 63 km S of Shikotan Island, Yuzhno-Kurilsky District, Sakhalin Oblast, Russia | More |
| Aug 30, 1969 07:11 54 years ago | 6.4 26 km | 94 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 28, 1969 21:35 54 years ago | 5.8 26 km | Russia, 177 km E of Nemuro, Hokkaido, Japan | More |
| Aug 27, 1969 03:26 54 years ago | 5.7 35 km | Russia, 178 km E of Nemuro, Hokkaido, Japan | More |
| Aug 22, 1969 04:40 54 years ago | 5.8 25 km | Russia, 199 km E of Nemuro, Hokkaido, Japan | More |
| Aug 21, 1969 13:24 54 years ago | 5.8 29 km | 187 km E of Yuzhno-Kurilsk, Sakhalin Oblast, Russia | More |
| Aug 21, 1969 03:32 54 years ago | 5.9 27 km | 84 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 19, 1969 08:49 54 years ago | 6.6 27 km | 183 km E of Yuzhno-Kurilsk, Sakhalin Oblast, Russia | More |
| Aug 18, 1969 11:43 54 years ago | 5.8 25 km | 143 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 17, 1969 11:54 54 years ago | 5.9 130 km | 4.4 km NW of Tomakomai, Hokkaido, Japan | More |
| Aug 16, 1969 17:13 54 years ago | 5.6 33 km | Russia, 170 km E of Nemuro, Hokkaido, Japan | More |
| Aug 16, 1969 15:15 54 years ago | 5.8 33 km | 90 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 15, 1969 10:02 54 years ago | 6.1 25 km | 148 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 15, 1969 04:32 54 years ago | 6.3 19 km | Russia, 187 km E of Nemuro, Hokkaido, Japan | More |
| Aug 14, 1969 14:19 54 years ago | 7.1 28 km | 92 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 13, 1969 22:57 54 years ago | 6.3 31 km | 191 km E of Yuzhno-Kurilsk, Sakhalin Oblast, Russia | More |
| Aug 13, 1969 08:31 54 years ago | 6.1 35 km | 93 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 13, 1969 03:29 54 years ago | 5.8 35 km | 72 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 23:05 54 years ago | 6.0 31 km | Russia, 188 km E of Nemuro, Hokkaido, Japan | More |
| Aug 12, 1969 21:16 54 years ago | 5.6 30 km | Russia, 114 km SE of Nemuro, Hokkaido, Japan | More |
| Aug 12, 1969 13:18 54 years ago | 5.8 27 km | 195 km E of Yuzhno-Kurilsk, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 11:21 54 years ago | 6.8 19 km | 161 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 09:33 54 years ago | 6.1 31 km | 83 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 09:25 54 years ago | 6.0 26 km | 96 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 07:10 54 years ago | 5.6 35 km | 189 km E of Yuzhno-Kurilsk, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 05:53 54 years ago | 6.8 29 km | 137 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 05:03 54 years ago | 6.8 30 km | 193 km E of Yuzhno-Kurilsk, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 04:53 54 years ago | 6.1 30 km | 96 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 12, 1969 03:33 54 years ago | 6.2 19 km | Russia, 173 km E of Nemuro, Hokkaido, Japan | More |
| Aug 11, 1969 23:42 54 years ago | 5.6 35 km | 88 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 11, 1969 23:02 54 years ago | 5.8 30 km | Russia, 175 km E of Nemuro, Hokkaido, Japan | More |
| Aug 11, 1969 22:53 54 years ago | 5.7 30 km | 138 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 11, 1969 21:27 54 years ago | 8.2 30 km | Russia, 185 km E of Nemuro, Hokkaido, Japan | More |
| Aug 11, 1969 21:27 54 years ago | 6.2 25 km | 79 km E of Shikotan, Sakhalin Oblast, Russia | More |
| Aug 11, 1969 21:26 54 years ago | 6.2 25 km | Russia, 196 km E of Nemuro, Hokkaido, Japan | More |
| Jul 23, 1969 13:14 54 years ago | 5.6 47 km | 78 km NE of Iwaki, Fukushima, Japan | More |
| Jul 12, 1969 19:16 54 years ago | 6.2 20 km | 222 km E of Morioka, Iwate, Japan | More |
| Jun 12, 1969 07:41 54 years ago | 5.8 15 km | 238 km E of Morioka, Iwate, Japan | More |
| May 13, 1969 14:19 54 years ago | 5.6 50 km | 18 km E of Hitachi-Naka, Hitachinaka-shi, Ibaraki, Japan | More |
| Apr 22, 1969 08:11 54 years ago | 6.0 35 km | 124 km E of Miyako, Iwate, Japan | More |
| Apr 17, 1969 04:56 54 years ago | 5.9 10 km | 144 km E of Miyako, Iwate, Japan | More |
| Apr 15, 1969 17:30 54 years ago | 6.1 10 km | 148 km E of Miyako, Iwate, Japan | More |
| Apr 9, 1969 12:57 54 years ago | 5.7 110 km | Yaita-shi, 7.7 km W of Yaita, Prefectura de Tochigi, Japan | More |
| Mar 21, 1969 03:05 54 years ago | 5.8 17 km | 245 km E of Morioka, Iwate, Japan | More |
| Mar 18, 1969 16:16 54 years ago | 5.6 13 km | 273 km SE of Kuril'sk, Sakhalin Oblast, Russia | More |
| Mar 16, 1969 15:54 54 years ago | 6.0 39 km | 425 km NE of Tokyo, Japan | More |
| Mar 8, 1969 10:20 54 years ago | 5.7 170 km | Oshima Ko, 78 km NW of Goshogawara, Aomori, Japan | More |
| Jan 19, 1969 07:02 54 years ago | 7.0 245 km | 71 km N of Mombetsu, Monbetsu Shi, Hokkaido, Japan | More |
| Nov 24, 1968 21:21 54 years ago | 5.9 40 km | 84 km E of Hachinohe, Aomori, Japan | More |
| Nov 13, 1968 18:41 54 years ago | 6.2 46 km | 92 km NE of Miyako, Iwate, Japan | More |
| Nov 11, 1968 14:41 54 years ago | 5.9 27 km | 141 km NE of Miyako, Iwate, Japan | More |
| Oct 20, 1968 12:21 54 years ago | 6.0 15 km | 280 km E of Morioka, Iwate, Japan | More |
| Oct 7, 1968 20:49 54 years ago | 6.5 35 km | 52 km SE of Shizunai-furukawachō, Hidaka-gun, Hokkaido, Japan | More |
| Sep 21, 1968 13:06 55 years ago | 6.7 58 km | 42 km SE of Shizunai-furukawachō, Hidaka-gun, Hokkaido, Japan | More |
| Sep 15, 1968 10:50 55 years ago | 6.0 27 km | 160 km E of Hachinohe, Aomori, Japan | More |
| Aug 25, 1968 09:13 55 years ago | 5.7 22 km | 132 km E of Miyako, Iwate, Japan | More |
| Aug 25, 1968 09:07 55 years ago | 5.7 21 km | 137 km NE of Miyako, Iwate, Japan | More |
| Aug 16, 1968 10:39 55 years ago | 5.9 15 km | 472 km NE of Tokyo, Japan | More |
| Aug 8, 1968 04:55 55 years ago | 5.8 38 km | 97 km NE of Hasaki, Chōshi-shi, Chiba, Japan | More |
| Aug 7, 1968 08:00 55 years ago | 5.8 60 km | Akkeshi-gun, 39 km E of Kushiro, Hokkaido, Japan | More |
| Jul 25, 1968 10:50 55 years ago | 5.8 17 km | 88 km NW of Kuril'sk, Sakhalin Oblast, Russia | More |
| Jul 23, 1968 23:02 55 years ago | 6.0 27 km | 215 km E of Morioka, Iwate, Japan | More |
| Jul 12, 1968 03:56 55 years ago | 6.0 20 km | 115 km E of Miyako, Iwate, Japan | More |
| Jul 12, 1968 00:44 55 years ago | 6.0 22 km | 112 km E of Miyako, Iwate, Japan | More |
| Jul 10, 1968 20:40 55 years ago | 5.9 20 km | 145 km NE of Miyako, Iwate, Japan | More |
| Jul 5, 1968 11:28 55 years ago | 6.3 47 km | 49 km E of Kasakai-jima Island, Japan | More |
| Jul 1, 1968 10:45 55 years ago | 6.1 61 km | Iruma-gun, 6 km NW of Sakado, Saitama, Japan | More |
| Jun 26, 1968 10:23 55 years ago | 5.8 45 km | 55 km SE of Shizunai-furukawachō, Hidaka-gun, Hokkaido, Japan | More |
| Jun 25, 1968 23:33 55 years ago | 5.8 21 km | 141 km E of Miyako, Iwate, Japan | More |
| Jun 22, 1968 01:12 55 years ago | 6.1 18 km | 236 km E of Morioka, Iwate, Japan | More |
| Jun 17, 1968 18:57 55 years ago | 6.4 25 km | 261 km SE of Morioka, Iwate, Japan | More |
| Jun 17, 1968 11:53 55 years ago | 6.3 38 km | 214 km E of Aomori, Japan | More |
| Jun 14, 1968 11:52 55 years ago | 5.7 25 km | 497 km NE of Tokyo, Japan | More |
| Jun 13, 1968 21:10 55 years ago | 6.2 30 km | 99 km E of Yamada, Shimohei-gun, Iwate, Japan | More |
| Jun 13, 1968 11:56 55 years ago | 5.6 30 km | 116 km E of Miyako, Iwate, Japan | More |
| Jun 12, 1968 21:57 55 years ago | 6.3 28 km | 500 km NE of Tokyo, Japan | More |
| Jun 12, 1968 13:41 55 years ago | 7.0 32 km | 98 km E of Miyako, Iwate, Japan | More |
| Jun 8, 1968 05:29 55 years ago | 5.9 40 km | 42 km SE of Shikotan, Sakhalin Oblast, Russia | More |
| Jun 3, 1968 14:16 55 years ago | 5.6 155 km | Ostrov Shlem, Hokkaido, Japan, 60 km NE of Kuril'sk, Sakhalin Oblast, Russia | More |
| Jun 1, 1968 10:31 55 years ago | 5.8 45 km | 78 km NE of Miyako, Iwate, Japan | More |
| May 30, 1968 05:23 55 years ago | 5.9 24 km | 198 km E of Kuril'sk, Sakhalin Oblast, Russia | More |
| May 25, 1968 11:52 55 years ago | 6.1 32 km | 129 km NE of Miyako, Iwate, Japan | More |
| May 24, 1968 14:06 55 years ago | 6.6 28 km | 148 km E of Hachinohe, Aomori, Japan | More |
| May 22, 1968 19:29 55 years ago | 6.0 49 km | 83 km NE of Miyako, Iwate, Japan | More |
| May 22, 1968 10:51 55 years ago | 6.0 45 km | 105 km SE of Shizunai-furukawachō, Hidaka-gun, Hokkaido, Japan | More |
| May 21, 1968 11:00 55 years ago | 5.8 30 km | 194 km E of Kuril'sk, Sakhalin Oblast, Russia | More |
| May 21, 1968 08:20 55 years ago | 6.3 31 km | 185 km E of Kuril'sk, Sakhalin Oblast, Russia | More |
| May 21, 1968 04:11 55 years ago | 5.6 30 km | 249 km E of Aomori, Japan | More |
| May 21, 1968 00:19 55 years ago | 5.9 35 km | 194 km E of Kuril'sk, Sakhalin Oblast, Russia | More |
| May 20, 1968 21:09 55 years ago | 7.0 28 km | 189 km E of Kuril'sk, Sakhalin Oblast, Russia | More |
| May 20, 1968 03:16 55 years ago | 5.9 15 km | 253 km E of Morioka, Iwate, Japan | More |
| May 19, 1968 22:16 55 years ago | 6.1 37 km | 230 km E of Aomori, Japan | More |
| May 19, 1968 04:12 55 years ago | 6.3 20 km | 205 km E of Tokyo, Japan | More |
| May 17, 1968 18:17 55 years ago | 6.1 35 km | 122 km E of Miyako, Iwate, Japan | More |
| May 17, 1968 16:02 55 years ago | 6.3 20 km | 281 km NE of Morioka, Iwate, Japan | More |
| May 17, 1968 10:42 55 years ago | 6.1 28 km | 135 km E of Miyako, Iwate, Japan | More |
| May 16, 1968 23:04 55 years ago | 6.5 43 km | 112 km E of Miyako, Iwate, Japan | More |
| May 16, 1968 20:22 55 years ago | 6.1 37 km | 97 km S of Shizunai-furukawachō, Hidaka-gun, Hokkaido, Japan | More |
| May 16, 1968 19:16 55 years ago | 6.1 43 km | 133 km NE of Hachinohe, Aomori, Japan | More |
| May 16, 1968 18:43 55 years ago | 5.7 59 km | 69 km NE of Hachinohe, Aomori, Japan | More |
| May 16, 1968 16:13 55 years ago | 6.5 25 km | 222 km E of Morioka, Iwate, Japan | More |
| May 16, 1968 10:39 55 years ago | 7.9 25 km | 138 km E of Mutsu, Aomori, Japan | More |
| May 16, 1968 08:58 55 years ago | 6.1 29 km | 134 km E of Mutsu, Aomori, Japan | More |
| May 16, 1968 06:36 55 years ago | 5.8 30 km | 210 km E of Aomori, Japan | More |
| May 16, 1968 01:04 55 years ago | 6.0 25 km | 235 km E of Aomori, Japan | More |
