Mag. 4.7 earthquake - 72 mi southeast of Sand Point, Aleutians East County, Alaska, on Friday, 30 Oct 2020 9:36 pm (GMT -8) -

Mag. 4.7 earthquake  - 72 mi southeast of Sand Point, Aleutians East County, Alaska, on Friday, 30 Oct 2020 9:36 pm (GMT -8)

Light magnitude 4.7 earthquake at 40 km depth

31 Oct 05:46 UTC: First to report: GFZ after 10 minutes.
31 Oct 05:50: Magnitude recalculated from 5.1 to 5.8. Epicenter location corrected by 7.9 km (4.9 mi) towards S.
31 Oct 06:51: Magnitude recalculated from 5.8 to 5.3. Epicenter location corrected by 1.3 km (0.8 mi) towards SSW.
3 Nov 18:02: Now using data updates from USGS
Date & time: 31 Oct 2020 05:36:09 UTC -
Local time at epicenter: Friday, 30 Oct 2020 9:36 pm (GMT -8)
Magnitude: 4.7
Depth: 40.4 km
Epicenter latitude / longitude: 54.5411°N / 159.3357°W (Gulf of Alaska, United States)
Nearest volcano: Stepovak Bay 2 (155 km / 96 mi)
Nearby towns and cities:
116 km (72 mi) SE of Sand Point (pop: 1,060) --> See nearby quakes!
153 km (95 mi) S of Perryville (pop: 113) --> See nearby quakes!
194 km (121 mi) S of Chignik Lake (pop: 73) --> See nearby quakes!
200 km (124 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
201 km (125 mi) SE of Nelson Lagoon (pop: 52) --> See nearby quakes!
203 km (126 mi) SSW of Chignik Lagoon (pop: 78) --> See nearby quakes!
228 km (142 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
271 km (168 mi) S of Port Heiden (pop: 98) --> See nearby quakes!
6130 km (3809 mi) NW of Washington (pop: 601,700) --> See nearby quakes!
6130 km (3809 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
31 km (19 mi) SSE of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 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 4.740 km115 Km SE of Sand Point, Alaska, USAUSGS
M 4.710 kmSouth Of Alaska, USAEMSC
M 5.235 kmSouth of Alaska, USAGeoAu
M 4.740 km115 Km SE of Sand Point, Alaska, USAUSGS
M 5.310 kmSouth of Alaska, USAGFZ

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
962.4 km NNE of epicenter [Map] / not felt (reported through our app)
962.4 km NNE of epicenter [Map] / not felt (reported through our app)
153.2 km N of epicenter [Map] / Moderate shaking (MMI V) (reported through our app)
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Earlier earthquakes in the same area since 1900

Mag. 4.7 earthquake - 72 mi southeast of Sand Point, Aleutians East County, Alaska, on Friday, 30 Oct 2020 9:36 pm (GMT -8)

Map of earlier quakes

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