Strong mag. 5.8 earthquake - North Pacific Ocean, 136 mi southwest of Unalaska, Aleutians West (CA) County, Alaska, USA, on Wednesday, 17 April 1957 at 13:25 (GMT)
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Strong magnitude 5.8 earthquake at 25 km depth
Date & time: 17 Apr 1957 13:25:03 UTC
Depth: 25.0 km
Epicenter latitude / longitude: 52.297°N / 168.48°W (North Pacific Ocean, Alaska, United States)
Nearest volcano: Vsevidof (94 km / 58 mi)
Nearby towns and cities:
76 km (47 mi) SSE of Nikolski (pop: 18) --> See nearby quakes!
218 km (136 mi) SW of Unalaska (pop: 4,490) --> See nearby quakes!
272 km (169 mi) SW of Akutan (pop: 1,040) --> See nearby quakes!
390 km (242 mi) E of Atka (pop: 64) --> See nearby quakes!
439 km (273 mi) SW of False Pass (pop: 40) --> See nearby quakes!
496 km (308 mi) SW of Cold Bay (pop: 123) --> See nearby quakes!
509 km (316 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.
|M 5.8||25 km||Fox Islands, Aleutian Islands, Alaska (USA)||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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More infoRecorded aftershocks, latest first (4 quakes):
- 02 May 1957 11:38 UTC| M 6.3 |26 km (16.2 mi) depth|26 km (16 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|28 km (17 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|31 km (19 mi) distance| USGS | Details
- 28 Apr 1957 14:49 UTC| M 5.8 |25 km (15.5 mi) depth|13 km (8 mi) distance| USGS | Details