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Strong mag. 5.1 earthquake - 118 Km SSE of Sand Point, Alaska, USA, on Tuesday, Oct 20, 2020 at 1:32 am (GMT -11)

This quake was likely an aftershock of the 7.6 quake 60 mi southeast of Sandpoint, Aleutians East, Alaska, USA, Oct 19, 2020 11:54 am (GMT -9), which had occurred 16 hours earlier.
Strong mag. 5.1 earthquake - 118 Km SSE of Sand Point, Alaska, USA, on Tuesday, Oct 20, 2020 at 1:32 am (GMT -11) Strong mag. 5.1 earthquake - 118 Km SSE of Sand Point, Alaska, USA, on Tuesday, Oct 20, 2020 at 1:32 am (GMT -11)

Strong magnitude 5.1 earthquake at 18 km depth

20 Oct 12:42 UTC: First to report: GFZ after 10 minutes.
20 Oct 12:45: Now using data updates from USGS
20 Oct 12:47: Magnitude recalculated from 4.8 to 5.2. Hypocenter depth recalculated from 19.9 to 19.2 km (from 12.4 to 11.9 mi). Epicenter location corrected by 5 km (3.1 mi) towards WNW.
20 Oct 22:06: Magnitude recalculated from 5.2 to 5.1. Hypocenter depth recalculated from 19.2 to 18.2 km (from 11.9 to 11.3 mi).

Earthquake details

Date & timeOct 20, 2020 12:32:11 UTC
Local time at epicenterTuesday, Oct 20, 2020 at 1:32 am (GMT -11)
Depth18.2 km
Epicenter latitude / longitude54.347°N / 159.8039°W (Alaska, United States)
Antipode54.347°S / 20.196°E
Shaking intensityModerate shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoDana (152 km / 94 mi)
Nearby towns and cities119 km (74 mi) SSE of Sand Point (pop: 1,060) | Show on map | Quakes nearby
179 km (111 mi) SSW of Perryville (pop: 113) | Show on map | Quakes nearby
180 km (112 mi) ESE of King Cove (pop: 1,010) | Show on map | Quakes nearby
204 km (127 mi) SSE of Nelson Lagoon (pop: 52) | Show on map | Quakes nearby
209 km (130 mi) ESE of Cold Bay (pop: 123) | Show on map | Quakes nearby
222 km (138 mi) SSW of Chignik Lake (pop: 73) | Show on map | Quakes nearby
233 km (145 mi) SSW of Chignik Lagoon (pop: 78) | Show on map | Quakes nearby
239 km (149 mi) ESE of False Pass (pop: 40) | Show on map | Quakes nearby
298 km (185 mi) SSW of Port Heiden (pop: 98) | Show on map | Quakes nearby
389 km (242 mi) E of Akutan (pop: 1,040) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 6.6°C (44 F), humidity: 68%, wind: 6 m/s (12 kts) from N
Estimated seismic energy released2.8 x 1012 joules (783 megawatt hours, equivalent to 674 tons of TNT) | 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.
5.118 km118 Km SSE of Sand Point, Alaska, USAUSGS
5.220 kmSouth Of Alaska, USAEMSC
5.120 kmSouth of Alaska, USAGeoAu
5.513 kmSouth of Alaska, USABMKG
5.220 kmSouth of Alaska, USAGFZ

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Knik-Fairview, Matanuska-Susitna, Alaska (999.3 km NNE of epicenter) [Map] / not felt (reported through our app)
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Earlier earthquakes in the same area

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