Moderate mag. 4.3 earthquake - North Pacific Ocean, 136 mi east of Unalaska, Aleutians West (CA), Alaska, USA, on 2016-10-27 05:24:19 -11:00
This quake was likely an aftershock of the 5.9 quake North Pacific Ocean, 133 mi east of Unalaska, Aleutians West (CA), Alaska, USA, 27 October 2016 11:53 GMT, which had occurred 5 hours earlier.
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Moderate magnitude 4.3 earthquake at 9 km depth
27 Oct 17:28 UTC: First to report: USGS after 1 hour and 4 minutes.
Hypocenter depth recalculated from 12.1 to 9.0 km.
Hypocenter depth recalculated from 9.0 to 8.8 km.
Hypocenter depth recalculated from 12.1 to 9.0 km.
Hypocenter depth recalculated from 9.0 to 8.8 km.
Date & time: 27 Oct 2016 16:24:19 UTC
Local time at epicenter: 2016-10-27 05:24:19 -11:00
Magnitude: 4.3
Depth: 8.8 km
Epicenter latitude / longitude: 53.5468°N / 163.2541°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Isanotski (129 km / 80 mi)
Nearby towns and cities:
146 km (91 mi) S of False Pass (pop: 40) --> See nearby quakes!
178 km (111 mi) ESE of Akutan (pop: 1,040) --> See nearby quakes!
179 km (111 mi) SSW of King Cove (pop: 1,010) --> See nearby quakes!
186 km (115 mi) S of Cold Bay (pop: 123) --> See nearby quakes!
219 km (136 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
267 km (166 mi) SW of Sand Point (pop: 1,060) --> See nearby quakes!
303 km (188 mi) SSW of Nelson Lagoon (pop: 52) --> See nearby quakes!
372 km (231 mi) SW of Perryville (pop: 113) --> See nearby quakes!
416 km (259 mi) SW of Chignik Lake (pop: 73) --> See nearby quakes!
431 km (268 mi) SW of Chignik Lagoon (pop: 78) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 tons of TNT) 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 |
| 4.3 | 8.8 km | - 145km S of False Pass, Alaska | USGS |
| 4.3 | 9 km | UNIMAK ISLAND REGION, ALASKA | EMSC |
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