Date & time | Mar 9, 1957 14:22:33 UTC |
Local time at epicenter | |
Status | Confirmed |
Magnitude | 8.6 |
Depth | 25.0 km |
Epicenter latitude / longitude | 51.499°N / 175.626°W ![]() |
Antipode | 51.499°S / 4.374°E |
Shaking intensity | Severe shaking near epicenter |
Felt | 0 reports |
Primary data source | USGS (United States Geological Survey) |
Nearest volcano | Great Sitkin (73 km / 45 mi) |
Nearby towns and cities | 81 km (50 mi) ESE of Adak (pop: 332) | Show on map | Quakes nearby 125 km (78 mi) SW of Atka (pop: 64) | Show on map | Quakes nearby |
Estimated seismic energy released | 5 x 1017 joules (1.4 x 105 gigawatt hours, equivalent to 1.2 x 108 tons of TNT or 7486.7 atomic bombs!) | about seismic energy |
Mag. | Depth | Location | Source |
8.6 | 25 km | Andreanof Islands, Aleutian Islands, Alaska (USA) | USGS |
Date and time![]() | Mag Depth | Location | Details |
Mar 4, 1960 02:15 63 years ago | 5.9 0 km | 89 mi S of Adak, Aleutians West, Alaska, USA | More |
Feb 27, 1960 08:10 63 years ago | 5.8 47 km | 35 mi SE of Tag s Island, Aleutians West, Alaska, USA | More |
Feb 26, 1960 23:29 63 years ago | 6.0 35 km | 42 mi SE of Tag s Island, Aleutians West, Alaska, USA | More |
Dec 18, 1959 16:24 63 years ago | 6.0 27 km | 47 mi SE of Nikolski, Aleutians West, Alaska, USA | More |
Dec 14, 1959 22:00 63 years ago | 6.3 24 km | 131 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Sep 5, 1959 21:28 63 years ago | 5.5 35 km | 43 mi SE of Amchitka Island, Aleutians West, Alaska, USA | More |
Jul 13, 1959 12:28 64 years ago | 6.1 30 km | 38 mi SE of Seguam Island, Aleutians West, Alaska, USA | More |
May 18, 1959 07:24 64 years ago | 6.1 0 km | Saint Etienne Island, 31 mi SE of Attu Station, Aleutians West, Alaska, USA | More |
May 12, 1959 22:00 64 years ago | 6.0 35 km | 43 mi S of Adak, Aleutians West, Alaska, USA | More |
May 12, 1959 21:40 64 years ago | 5.9 35 km | 51 mi S of Adak, Aleutians West, Alaska, USA | More |
May 12, 1959 04:57 64 years ago | 6.3 25 km | 29 km NE of Copper Island, Kamchatka, Russia | More |
Apr 22, 1959 10:55 64 years ago | 6.0 51 km | Peter Island, 15 mi W of Unalaska, Aleutians West, Alaska, USA | More |
Feb 28, 1959 01:32 64 years ago | 5.5 0 km | 34 mi E of Nikolski, Aleutians West, Alaska, USA | More |
Feb 17, 1959 12:03 64 years ago | 6.0 15 km | 275 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Feb 9, 1959 04:42 64 years ago | 5.8 20 km | 148 mi S of Adak, Aleutians West, Alaska, USA | More |
Feb 6, 1959 14:33 64 years ago | 5.9 55 km | Little Tanaga Island, 21 mi SE of Adak, Aleutians West, Alaska, USA | More |
Jan 29, 1959 20:58 64 years ago | 5.5 0 km | 15 mi E of Atka, Aleutians West, Alaska, USA | More |
Jan 29, 1959 20:21 64 years ago | 5.7 35 km | 36 mi SE of Atka, Aleutians West, Alaska, USA | More |
Jan 16, 1959 01:31 64 years ago | 5.9 50 km | 19 mi S of Amukta Island, Aleutians West, Alaska, USA | More |
Dec 19, 1958 18:36 64 years ago | 5.7 15 km | 75 mi SW of Adak, Aleutians West, Alaska, USA | More |
Nov 18, 1958 07:45 64 years ago | 5.8 0 km | 18 mi NE of Amchitka Island, Aleutians West, Alaska, USA | More |
Nov 2, 1958 10:44 64 years ago | 5.6 0 km | 31 mi S of Oglodak Island, Aleutians West, Alaska, USA | More |
Oct 29, 1958 07:44 64 years ago | 6.6 30 km | 21 mi SE of Amchitka Island, Aleutians West, Alaska, USA | More |
Oct 28, 1958 23:50 64 years ago | 5.8 0 km | 14 mi E of Amchitka Island, Aleutians West, Alaska, USA | More |
Oct 20, 1958 00:55 64 years ago | 5.7 35 km | 24 mi SE of Oglodak Island, Aleutians West, Alaska, USA | More |
Oct 1, 1958 17:47 64 years ago | 6.3 0 km | 96 mi SE of Unalaska, Aleutians West, Alaska, USA | More |
Sep 9, 1958 22:23 64 years ago | 5.7 25 km | 99 mi NW of Attu Station, Aleutians West, Alaska, USA | More |
Aug 17, 1958 09:08 64 years ago | 5.8 15 km | 52 mi SE of Adak, Aleutians West, Alaska, USA | More |
Aug 16, 1958 13:17 64 years ago | 6.1 25 km | 41 mi SE of Adak, Aleutians West, Alaska, USA | More |
Aug 14, 1958 14:55 64 years ago | 6.3 35 km | 37 mi SE of Anagaksik Island, Aleutians West, Alaska, USA | More |
Aug 13, 1958 20:13 65 years ago | 5.7 15 km | 104 mi SW of Adak, Aleutians West, Alaska, USA | More |
Jul 24, 1958 13:08 65 years ago | 5.6 35 km | 41 mi SE of Herbert Island, Aleutians West, Alaska, USA | More |
Jul 21, 1958 14:37 65 years ago | 6.1 35 km | Tag Islands, 86 mi W of Adak, Aleutians West, Alaska, USA | More |
Jul 18, 1958 00:39 65 years ago | 5.9 25 km | 46 mi S of Adak, Aleutians West, Alaska, USA | More |
Jul 17, 1958 20:59 65 years ago | 5.9 25 km | 43 mi S of Adak, Aleutians West, Alaska, USA | More |
Jul 17, 1958 19:02 65 years ago | 5.8 25 km | 45 mi S of Adak, Aleutians West, Alaska, USA | More |
Jul 7, 1958 05:16 65 years ago | 5.4 15 km | USA | More |
Jul 1, 1958 05:53 65 years ago | 6.0 25 km | 26 mi SW of Adak, Aleutians West, Alaska, USA | More |
Jun 12, 1958 21:34 65 years ago | 5.5 200 km | 24 mi SE of Unalaska Island, Aleutians West, Alaska, USA | More |
Jun 12, 1958 20:53 65 years ago | 6.3 35 km | 86 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Jun 8, 1958 00:38 65 years ago | 5.8 35 km | 51 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Jun 4, 1958 14:29 65 years ago | 6.3 25 km | 91 mi S of Unalaska, Aleutians West, Alaska, USA | More |
May 30, 1958 18:04 65 years ago | 6.1 35 km | 40 mi S of Nikolski, Aleutians West, Alaska, USA | More |
May 26, 1958 10:56 65 years ago | 6.1 130 km | 15 mi NE of Uliaga Island, Aleutians West, Alaska, USA | More |
May 25, 1958 14:54 65 years ago | 5.8 25 km | 58 mi S of Adak, Aleutians West, Alaska, USA | More |
May 25, 1958 00:35 65 years ago | 5.8 25 km | 66 mi SW of Adak, Aleutians West, Alaska, USA | More |
May 17, 1958 15:38 65 years ago | 5.5 35 km | Amatignak Island, 122 mi W of Adak, Aleutians West, Alaska, USA | More |
Apr 27, 1958 19:03 65 years ago | 5.8 50 km | 44 mi SW of Nikolski, Aleutians West, Alaska, USA | More |
Mar 20, 1958 01:38 65 years ago | 6.2 15 km | 198 mi SE of Adak, Aleutians West, Alaska, USA | More |
Mar 18, 1958 22:20 65 years ago | 6.2 0 km | 196 mi SE of Adak, Aleutians West, Alaska, USA | More |
Feb 25, 1958 01:56 65 years ago | 5.8 20 km | Alaska, USA | More |
Feb 22, 1958 17:05 65 years ago | 5.5 0 km | 20 mi W of Atka Island, Aleutians West, Alaska, USA | More |
Feb 22, 1958 10:50 65 years ago | 6.3 15 km | 127 mi SE of Adak, Aleutians West, Alaska, USA | More |
Feb 12, 1958 23:43 65 years ago | 6.0 40 km | 26 mi SE of Oglodak Island, Aleutians West, Alaska, USA | More |
Jan 24, 1958 18:03 65 years ago | 5.7 30 km | 134 mi W of Attu Station, Aleutians West, Alaska, USA | More |
Jan 13, 1958 00:02 65 years ago | 6.5 121 km | 42 mi NW of Kiska Island, Aleutians West, Alaska, USA | More |
Dec 13, 1957 20:26 65 years ago | 6.0 25 km | 183 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Dec 3, 1957 21:46 65 years ago | 5.6 0 km | 14 mi S of Chuginadak Island, Aleutians West, Alaska, USA | More |
Dec 3, 1957 01:46 65 years ago | 6.2 0 km | 20 mi S of Tanaga Island, Aleutians West, Alaska, USA | More |
Nov 26, 1957 11:35 65 years ago | 6.1 25 km | 47 mi S of Adak, Aleutians West, Alaska, USA | More |
Nov 23, 1957 00:58 65 years ago | 5.7 35 km | 32 mi S of Breed Island, Aleutians West, Alaska, USA | More |
Nov 20, 1957 12:40 65 years ago | 6.4 25 km | 29 mi SE of Tigalda Island, Aleutians East, Alaska, USA | More |
Nov 18, 1957 10:12 65 years ago | 5.8 25 km | 16 mi SW of Amatignak Island, Aleutians West, Alaska, USA | More |
Nov 16, 1957 01:48 65 years ago | 5.7 0 km | 35 mi SW of Adak, Aleutians West, Alaska, USA | More |
Nov 7, 1957 04:15 65 years ago | 5.5 150 km | 32 mi N of Amchitka Island, Aleutians West, Alaska, USA | More |
Oct 23, 1957 05:56 65 years ago | 6.2 35 km | 37 mi SE of Herbert Island, Aleutians West, Alaska, USA | More |
Oct 10, 1957 18:54 65 years ago | 5.8 45 km | 35 mi SE of Akutan, Aleutians East, Alaska, USA | More |
Oct 4, 1957 23:55 65 years ago | 5.5 0 km | 40 mi N of Segula Island, Aleutians West, Alaska, USA | More |
Sep 7, 1957 10:06 65 years ago | 6.1 25 km | 19 mi E of Amatignak Island, Aleutians West, Alaska, USA | More |
Sep 6, 1957 04:54 65 years ago | 5.5 20 km | 105 mi S of Adak, Aleutians West, Alaska, USA | More |
Sep 2, 1957 14:20 65 years ago | 6.2 0 km | 163 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Aug 19, 1957 21:31 65 years ago | 6.5 0 km | 270 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Aug 1, 1957 16:18 66 years ago | 5.6 0 km | 194 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Jul 25, 1957 07:42 66 years ago | 5.9 20 km | 66 mi S of Adak, Aleutians West, Alaska, USA | More |
Jul 23, 1957 00:45 66 years ago | 6.4 25 km | 48 mi SW of Adak, Aleutians West, Alaska, USA | More |
Jul 13, 1957 00:59 66 years ago | 5.7 26 km | 42 mi SE of Herbert Island, Aleutians West, Alaska, USA | More |
Jul 3, 1957 12:24 66 years ago | 6.0 15 km | 160 mi SW of Adak, Aleutians West, Alaska, USA | More |
Jun 29, 1957 07:48 66 years ago | 5.8 20 km | 166 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Jun 15, 1957 18:18 66 years ago | 5.9 35 km | 20 mi S of Amukta Island, Aleutians West, Alaska, USA | More |
Jun 14, 1957 06:24 66 years ago | 6.1 35 km | Little Tanaga Island, 18 mi E of Adak, Aleutians West, Alaska, USA | More |
Jun 13, 1957 10:40 66 years ago | 6.8 19 km | 33 mi S of Oglodak Island, Aleutians West, Alaska, USA | More |
Jun 11, 1957 23:54 66 years ago | 5.9 35 km | 38 mi SE of Adak, Aleutians West, Alaska, USA | More |
Jun 11, 1957 04:04 66 years ago | 5.5 35 km | 24 mi SE of Tigalda Island, Aleutians East, Alaska, USA | More |
May 31, 1957 22:17 66 years ago | 5.8 25 km | 13 mi SW of Amatignak Island, Aleutians West, Alaska, USA | More |
May 24, 1957 03:36 66 years ago | 6.0 35 km | 21 mi SE of Breed Island, Aleutians West, Alaska, USA | More |
May 22, 1957 13:29 66 years ago | 6.1 15 km | 123 mi S of Adak, Aleutians West, Alaska, USA | More |
May 20, 1957 01:50 66 years ago | 5.9 25 km | 303 mi SE of Attu Station, Aleutians West, Alaska, USA | More |
May 18, 1957 05:24 66 years ago | 6.0 20 km | 271 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
May 2, 1957 11:38 66 years ago | 6.3 26 km | 33 mi S of Nikolski, Aleutians West, Alaska, USA | More |
May 2, 1957 11:29 66 years ago | 6.3 30 km | 32 mi S of Nikolski, Aleutians West, Alaska, USA | More |
Apr 29, 1957 04:30 66 years ago | 5.6 25 km | 39 mi S of Nikolski, Aleutians West, Alaska, USA | More |
Apr 28, 1957 14:49 66 years ago | 5.8 25 km | 39 mi S of Nikolski, Aleutians West, Alaska, USA | More |
Apr 25, 1957 07:15 66 years ago | 6.0 35 km | 40 mi SE of Atka, Aleutians West, Alaska, USA | More |
Apr 19, 1957 22:19 66 years ago | 6.5 15 km | 114 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Apr 19, 1957 15:44 66 years ago | 6.0 25 km | 194 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Apr 17, 1957 13:25 66 years ago | 5.8 25 km | 136 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Apr 15, 1957 21:33 66 years ago | 5.9 23 km | 129 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Apr 15, 1957 10:38 66 years ago | 5.8 35 km | Amatignak Island, 110 mi W of Adak, Aleutians West, Alaska, USA | More |
Apr 14, 1957 20:59 66 years ago | 6.0 0 km | 153 mi SW of Adak, Aleutians West, Alaska, USA | More |
Apr 12, 1957 04:17 66 years ago | 5.0 0 km | Tag Islands, 84 mi W of Adak, Aleutians West, Alaska, USA | More |
Apr 10, 1957 09:09 66 years ago | 5.8 14 km | 110 mi S of Adak, Aleutians West, Alaska, USA | More |
Apr 9, 1957 20:24 66 years ago | 5.7 25 km | 156 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Apr 9, 1957 11:02 66 years ago | 5.9 35 km | 26 mi SE of Amatignak Island, Aleutians West, Alaska, USA | More |
Apr 5, 1957 02:49 66 years ago | 6.3 35 km | 26 mi SE of Seguam Island, Aleutians West, Alaska, USA | More |
Apr 2, 1957 21:27 66 years ago | 5.8 15 km | 163 mi E of Adak, Aleutians West, Alaska, USA | More |
Apr 2, 1957 20:17 66 years ago | 5.8 15 km | 165 mi SE of Adak, Aleutians West, Alaska, USA | More |
Apr 2, 1957 00:39 66 years ago | 5.8 18 km | 165 mi E of Adak, Aleutians West, Alaska, USA | More |
Apr 1, 1957 11:35 66 years ago | 5.8 20 km | 170 mi SE of Adak, Aleutians West, Alaska, USA | More |
Mar 31, 1957 10:08 66 years ago | 5.8 35 km | Tag Islands, 78 mi W of Adak, Aleutians West, Alaska, USA | More |
Mar 30, 1957 09:17 66 years ago | 6.2 33 km | 16 mi SE of Oglodak Island, Aleutians West, Alaska, USA | More |
Mar 29, 1957 22:49 66 years ago | 6.0 25 km | 37 mi SE of Nikolski, Aleutians West, Alaska, USA | More |
Mar 29, 1957 05:10 66 years ago | 6.8 25 km | 27 mi S of Peter Island, Aleutians West, Alaska, USA | More |
Mar 28, 1957 20:08 66 years ago | 5.8 25 km | 263 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Mar 25, 1957 00:39 66 years ago | 6.0 0 km | 54 mi SE of Breed Island, Aleutians West, Alaska, USA | More |
Mar 24, 1957 11:36 66 years ago | 6.0 0 km | 19 mi SW of Amukta Island, Aleutians West, Alaska, USA | More |
Mar 24, 1957 11:06 66 years ago | 6.0 20 km | 46 mi SE of Herbert Island, Aleutians West, Alaska, USA | More |
Mar 22, 1957 14:21 66 years ago | 7.1 47 km | 13 mi SE of Egg Island, Aleutians West, Alaska, USA | More |
Mar 19, 1957 12:50 66 years ago | 6.8 15 km | 35 mi SE of Oglodak Island, Aleutians West, Alaska, USA | More |
Mar 19, 1957 11:28 66 years ago | 6.0 35 km | 38 mi S of Adak, Aleutians West, Alaska, USA | More |
Mar 18, 1957 02:25 66 years ago | 6.0 39 km | Amukta Island, 216 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Mar 17, 1957 22:44 66 years ago | 6.4 45 km | 18 mi S of Avatanak Island, Aleutians East, Alaska, USA | More |
Mar 17, 1957 16:17 66 years ago | 6.0 15 km | 137 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Mar 17, 1957 07:53 66 years ago | 6.0 35 km | 15 mi NW of Amatignak Island, Aleutians West, Alaska, USA | More |
Mar 16, 1957 02:34 66 years ago | 7.2 25 km | 15 mi NE of Amatignak Island, Aleutians West, Alaska, USA | More |
Mar 15, 1957 02:52 66 years ago | 6.4 25 km | 81 mi S of Unalaska, Aleutians West, Alaska, USA | More |
Mar 14, 1957 14:47 66 years ago | 7.1 25 km | 47 mi S of Adak, Aleutians West, Alaska, USA | More |
Mar 14, 1957 01:52 66 years ago | 5.7 0 km | 29 mi SE of Nikolski, Aleutians West, Alaska, USA | More |
Mar 13, 1957 19:59 66 years ago | 6.2 50 km | 22 mi SE of Egg Island, Aleutians West, Alaska, USA | More |
Mar 13, 1957 15:42 66 years ago | 6.6 25 km | Tag Islands, 95 mi W of Adak, Aleutians West, Alaska, USA | More |
Mar 13, 1957 02:48 66 years ago | 6.1 35 km | 252 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Mar 12, 1957 12:46 66 years ago | 6.0 0 km | 18 mi E of Nikolski, Aleutians West, Alaska, USA | More |
Mar 12, 1957 11:45 66 years ago | 7.1 20 km | 38 mi SW of Adak, Aleutians West, Alaska, USA | More |
Mar 12, 1957 07:39 66 years ago | 6.4 10 km | 30 mi SE of Tag s Island, Aleutians West, Alaska, USA | More |
Mar 12, 1957 07:28 66 years ago | 6.5 25 km | 50 mi SE of Atka, Aleutians West, Alaska, USA | More |
Mar 11, 1957 15:36 66 years ago | 6.5 35 km | Amatignak Island, 107 mi W of Adak, Aleutians West, Alaska, USA | More |
Mar 11, 1957 14:55 66 years ago | 7.0 25 km | 15 mi S of Tag s Island, Aleutians West, Alaska, USA | More |
Mar 11, 1957 09:58 66 years ago | 7.1 35 km | 22 mi SW of Nikolski, Aleutians West, Alaska, USA | More |
Mar 11, 1957 03:35 66 years ago | 6.0 33 km | 85 mi S of Adak, Aleutians West, Alaska, USA | More |
Mar 11, 1957 03:12 66 years ago | 6.8 15 km | 56 mi S of Adak, Aleutians West, Alaska, USA | More |
Mar 10, 1957 16:37 66 years ago | 6.0 33 km | 62 mi SE of Atka, Aleutians West, Alaska, USA | More |
Mar 10, 1957 15:26 66 years ago | 6.5 25 km | 48 mi SW of Seguam Island, Aleutians West, Alaska, USA | More |
Mar 10, 1957 13:28 66 years ago | 6.2 35 km | Tag Islands, 91 mi W of Adak, Aleutians West, Alaska, USA | More |
Mar 10, 1957 13:10 66 years ago | 6.2 35 km | 26 mi NW of Amatignak Island, Aleutians West, Alaska, USA | More |
Mar 10, 1957 12:45 66 years ago | 6.4 33 km | 91 mi S of Adak, Aleutians West, Alaska, USA | More |
Mar 10, 1957 12:36 66 years ago | 6.0 20 km | 259 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Mar 10, 1957 11:20 66 years ago | 6.2 25 km | 233 mi SW of Unalaska, Aleutians West, Alaska, USA | More |
Mar 10, 1957 03:09 66 years ago | 6.6 33 km | 55 mi S of Atka, Aleutians West, Alaska, USA | More |
Mar 10, 1957 03:06 66 years ago | 6.6 25 km | 39 mi S of Atka, Aleutians West, Alaska, USA | More |
Mar 9, 1957 20:39 66 years ago | 6.9 25 km | 50 mi SW of Nikolski, Aleutians West, Alaska, USA | More |
Mar 9, 1957 15:41 66 years ago | 6.0 0 km | 81 mi S of Adak, Aleutians West, Alaska, USA | More |