Mag. 4.2 earthquake - Gulf of Alaska, 69 mi southeast of Sand Point, Alaska, USA, on Friday, 30 Oct 2020 2:10 pm (GMT -11) -
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 11 days earlier.
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Light magnitude 4.2 earthquake at 26 km depth
31 Oct 01:27 UTC: First to report: USGS after 18 minutes.
Local time at epicenter: Friday, 30 Oct 2020 2:10 pm (GMT -11)
Magnitude: 4.2
Depth: 25.5 km
Epicenter latitude / longitude: 54.495°N / 159.5548°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Stepovak Bay 2 (161 km / 100 mi)
Nearby towns and cities:
111 km (69 mi) SE of Sand Point (pop: 1,060) --> See nearby quakes!
160 km (99 mi) S of Perryville (pop: 113) --> See nearby quakes!
188 km (117 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
202 km (126 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
217 km (135 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
406 km (252 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
459 km (285 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
574 km (357 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6145 km (3818 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6145 km (3818 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
32 km (20 mi) S of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Light Rain
8.4°C (47 F), humidity: 92%, wind: 2 m/s (4 kts) from NE
Primary data source: USGS (United States Geological Survey)
Light Rain
8.4°C (47 F), humidity: 92%, wind: 2 m/s (4 kts) from NEEstimated 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 | 26 km | 111 Km SSE of Sand Point, Alaska, USA | USGS |
| M 3.7 | 5 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, 69 mi southeast of Sand Point, Alaska, USA, on Friday, 30 Oct 2020 2:10 pm (GMT -11)
Click here to search our database for earlier earthquakes in the same area since 1900!
