Strong mag. 5.9 earthquake - 73 mi south of Sand Point, Aleutians East, Alaska, USA, on Monday, Oct 19, 2020 at 10:45 am (GMT -11)

This quake was likely an aftershock of the 7.6 quake 60 mi southeast of Sand Point, Aleutians East, Alaska, USA, Oct 19, 2020 11:54 am (GMT -9), which had occurred 51 minutes earlier.
Strong mag. 5.9 earthquake - 73 mi south of Sand Point, Aleutians East, Alaska, USA, on Monday, Oct 19, 2020 at 10:45 am (GMT -11) Strong mag. 5.9 earthquake - 73 mi south of Sand Point, Aleutians East, Alaska, USA, on Monday, Oct 19, 2020 at 10:45 am (GMT -11)

Strong magnitude 5.9 earthquake at 33 km depth

19 Oct 21:55 UTC: First to report: GFZ after 10 minutes.
19 Oct 21:56: Epicenter location corrected by 7.4 km (4.6 mi) towards SSE.
19 Oct 22:01: Now using data updates from USGS
20 Oct 21:30: Hypocenter depth recalculated from 37.3 to 32.5 km (from 23 to 20 mi). Epicenter location corrected by 10.2 km (6.3 mi) towards SSE.

Earthquake details

Date & timeOct 19, 2020 21:45:27 UTC
Local time at epicenterMonday, Oct 19, 2020 at 10:45 am (GMT -11)
StatusConfirmed
Magnitude5.9
Depth32.5 km
Epicenter latitude / longitude54.338°N / 159.9038°W (Gulf of Alaska, Alaska, United States)
Antipode54.338°S / 20.096°E
Shaking intensityModerate shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoDana (157 km / 98 mi)
Nearby towns and cities117 km (73 mi) SSE of Sand Point (pop: 1,060) | Show on map | Quakes nearby
175 km (109 mi) ESE of King Cove (pop: 1,010) | Show on map | Quakes nearby
181 km (113 mi) SSW of Perryville (pop: 113) | Show on map | Quakes nearby
203 km (126 mi) SSE of Nelson Lagoon (pop: 52) | Show on map | Quakes nearby
204 km (127 mi) ESE of Cold Bay (pop: 123) | Show on map | Quakes nearby
225 km (140 mi) SSW of Chignik Lake (pop: 73) | Show on map | Quakes nearby
233 km (145 mi) ESE of False Pass (pop: 40) | Show on map | Quakes nearby
236 km (146 mi) SSW of Chignik Lagoon (pop: 78) | Show on map | Quakes nearby
301 km (187 mi) SSW of Port Heiden (pop: 98) | Show on map | Quakes nearby
382 km (238 mi) E of Akutan (pop: 1,040) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 8.1°C (47 F), humidity: 73%, wind: 7 m/s (13 kts) from WNW
Estimated seismic energy released4.5 x 1013 joules (12.4 gigawatt hours, equivalent to 10676 tons of TNT or 0.7 atomic bombs!) | about seismic energy
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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.
Mag.DepthLocationSource
5.933 km117 Km SSE of Sand Point, Alaska, USAUSGS
5.92 kmSouth Of Alaska, USAEMSC
5.813 kmSouth of Alaska, USAGeoAu
5.727 kmSouth of Alaska, USAGFZ

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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unspecified (1244.4 km NNW of epicenter) [Map] / not felt : Didn't feel it in Gambell, Alaska (reported through our app)  
Knik-Fairview, Matanuska-Susitna, Alaska (1003.7 km NNE of epicenter) [Map] / not felt (reported through our app)
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