Mag. 4.2 earthquake - Gulf of Alaska, 60 mi southeast of Sand Point, Alaska, USA, on 27 Oct 2:14 pm (GMT -8) -
This quake was likely an aftershock of the 7.6 quake Gulf of Alaska, 60 mi southeast of Sand Point, Aleutians East County, Alaska, USA, 19 Oct 2020 11:54 am (GMT -9), which had occurred 8 days earlier.
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Light magnitude 4.2 earthquake at 28 km depth
27 Oct 22:30 UTC: First to report: USGS after 16 minutes.
Local time at epicenter: 27 Oct 2:14 pm (GMT -8)
Magnitude: 4.2
Depth: 28.4 km
Epicenter latitude / longitude: 54.604°N / 159.6956°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Stepovak Bay 2 (147 km / 91 mi)
Nearby towns and cities:
96 km (60 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
150 km (93 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
176 km (109 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
204 km (127 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
397 km (247 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
452 km (281 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
562 km (349 mi) SW of Kodiak Station (pop: 1,300) --> See nearby quakes!
573 km (356 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6150 km (3821 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6150 km (3821 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
22 km (14 mi) SSW of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds
7.4°C (45 F), humidity: 72%, wind: 4 m/s (8 kts) from WNW
Primary data source: USGS (United States Geological Survey)
Few Clouds
7.4°C (45 F), humidity: 72%, wind: 4 m/s (8 kts) from WNWEstimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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 |
| M 4.2 | 28 km | 96 Km SSE of Sand Point, Alaska, USA | USGS |
| M 3.6 | 20 km | South Of Alaska, USA | EMSC |
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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Earlier earthquakes in the same area
Mag. 4.2 earthquake - Gulf of Alaska, 60 mi southeast of Sand Point, Alaska, USA, on 27 Oct 2:14 pm (GMT -8)
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