Mag. 4.2 earthquake - Gulf of Alaska, 55 mi southeast of Sand Point, Alaska, USA, on 19 Oct 3:04 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 2 hours and 10 minutes earlier.
Mag. 4.2 earthquake - Gulf of Alaska, 55 mi southeast of Sand Point, Alaska, USA, on 19 Oct 3:04 pm (GMT -8)

Light magnitude 4.2 earthquake at 28 km depth

19 Oct 23:53 UTC: First to report: USGS after 49 minutes.
20 Oct 00:22: Magnitude recalculated from 4.1 to 4.2. Hypocenter depth recalculated from 21.7 to 28.1 km (from 13.5 to 17.5 mi). Epicenter location corrected by 13.4 km (8.3 mi) towards NNW.
Date & time: 19 Oct 2020 23:04:25 UTC -
Local time at epicenter: 19 Oct 3:04 pm (GMT -8)
Magnitude: 4.2
Depth: 28.1 km
Epicenter latitude / longitude: 54.6923°N / 159.6629°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Stepovak Bay 2 (151 km / 94 mi)
Nearby towns and cities:
89 km (55 mi) SE of Sand Point (pop: 1,060) --> See nearby quakes!
139 km (87 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
175 km (109 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
183 km (114 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
203 km (126 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
400 km (249 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
455 km (283 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
565 km (351 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6144 km (3818 mi) NW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
6144 km (3818 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
13 km (8 mi) SW of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds 8.2°C (47 F), humidity: 75%, wind: 8 m/s (15 kts) from WNW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
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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.
MagnitudeDepthLocationSource
M 4.228 km89 Km SE of Sand Point, Alaska, USAUSGS
M 4.228 kmSouth Of Alaska, USAEMSC

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
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Earlier earthquakes in the same area since 1900

Mag. 4.2 earthquake - Gulf of Alaska, 55 mi southeast of Sand Point, Alaska, USA, on 19 Oct 3:04 pm (GMT -8)

Map of earlier quakes

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