Strong mag. 5.8 earthquake - North Pacific Ocean, 39 mi south of Nikolski, Aleutians West (CA) County, Alaska, USA, on Sunday, 28 April 1957 at 14:49 (GMT)
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Strong magnitude 5.8 earthquake at 25 km depth
Date & time: 28 Apr 1957 14:49:00 UTC
Magnitude: 5.8
Depth: 25.0 km
Epicenter latitude / longitude: 52.404°N / 168.569°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Vsevidof (81 km / 50 mi)
Nearby towns and cities:
63 km (39 mi) SSE of Nikolski (pop: 18) --> See nearby quakes!
213 km (132 mi) SW of Unalaska (pop: 4,490) --> See nearby quakes!
267 km (166 mi) SW of Akutan (pop: 1,040) --> See nearby quakes!
384 km (238 mi) E of Atka (pop: 64) --> See nearby quakes!
436 km (271 mi) SW of False Pass (pop: 40) --> See nearby quakes!
493 km (306 mi) SW of Cold Bay (pop: 123) --> See nearby quakes!
506 km (314 mi) SW of King Cove (pop: 1,010) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 3.2 x 1013 joules (8.78 gigawatt hours, equivalent to 7558 tons of TNT or 0.5 atomic bombs!) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
| Magnitude | Depth | Location | Source |
| M 5.8 | 25 km | Fox Islands, Aleutian Islands, Alaska (USA) | USGS |
User reports for this quake
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Aftershocks
More info
Recorded aftershocks, latest first (3 quakes):- 02 May 1957 11:38 UTC| M 6.3 |26 km (16.2 mi) depth|13 km (8 mi) distance| USGS | Very strong mag. 6.3 earthquake - North Pacific Ocean, 33 mi south of Nikolski, Aleutians West (CA) County, Alaska, USA, on Thursday, 2 May 1957 at 11:38 (GMT)
- 02 May 1957 11:29 UTC| M 6.3 |30 km (18.6 mi) depth|15 km (9 mi) distance| USGS | Very strong mag. 6.3 earthquake - North Pacific Ocean, 32 mi south of Nikolski, Aleutians West (CA) County, Alaska, USA, on Thursday, 2 May 1957 at 11:29 (GMT)
- 29 Apr 1957 04:30 UTC| M 5.6 |25 km (15.5 mi) depth|24 km (15 mi) distance| USGS | Details
Earlier earthquakes in the same area
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