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Strong mag. 5.7 earthquake - 65 mi southeast of Sand Point, Aleutians East, Alaska, USA, on Monday, Oct 19, 2020 at 10:06 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 12 minutes earlier.
Strong mag. 5.7 earthquake - 65 mi southeast of Sand Point, Aleutians East, Alaska, USA, on Monday, Oct 19, 2020 at 10:06 am (GMT -11) Strong mag. 5.7 earthquake - 65 mi southeast of Sand Point, Aleutians East, Alaska, USA, on Monday, Oct 19, 2020 at 10:06 am (GMT -11)

Strong magnitude 5.7 earthquake at 26 km depth

19 Oct 21:24 UTC: First to report: USGS after 18 minutes.
19 Oct 21:35: Magnitude recalculated from 5.2 to 5.8. Hypocenter depth recalculated from 18.1 to 27.5 km (from 11.2 to 17.1 mi). Epicenter location corrected by 9.8 km (6.1 mi) towards NW.
... [show all] ...
26 Oct 21:02: Hypocenter depth recalculated from 26.9 to 26.2 km (from 16.7 to 16.3 mi). Epicenter location corrected by 9.3 km (5.8 mi) towards NW.

Earthquake details

Date & timeOct 19, 2020 21:06:20 UTC
Local time at epicenterMonday, Oct 19, 2020 at 10:06 am (GMT -11)
StatusConfirmed
Magnitude5.7
Depth26.2 km
Epicenter latitude / longitude54.5073°N / 159.729°W (Gulf of Alaska, Alaska, United States)
Antipode54.507°S / 20.271°E
Shaking intensityModerate shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoStepovak Bay 2 (141 km / 88 mi)
Nearby towns and cities105 km (65 mi) SSE of Sand Point (pop: 1,060) | Show on map | Quakes nearby
160 km (100 mi) SSW of Perryville (pop: 113) | Show on map | Quakes nearby
177 km (110 mi) ESE of King Cove (pop: 1,010) | Show on map | Quakes nearby
191 km (118 mi) SSE of Nelson Lagoon (pop: 52) | Show on map | Quakes nearby
204 km (127 mi) SSW of Chignik Lake (pop: 73) | Show on map | Quakes nearby
206 km (128 mi) ESE of Cold Bay (pop: 123) | Show on map | Quakes nearby
214 km (133 mi) SSW of Chignik Lagoon (pop: 78) | Show on map | Quakes nearby
240 km (149 mi) E of False Pass (pop: 40) | Show on map | Quakes nearby
280 km (174 mi) SSW of Port Heiden (pop: 98) | Show on map | Quakes nearby
394 km (245 mi) E of Akutan (pop: 1,040) | Show on map | Quakes nearby
Weather at epicenter at time of quakeFew Clouds 8.2°C (47 F), humidity: 71%, wind: 7 m/s (14 kts) from W
Estimated seismic energy released2.2 x 1013 joules (6.22 gigawatt hours, equivalent to 5351 tons of TNT or 0.3 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
5.726 km92 Km SE of Sand Point, Alaska, USAUSGS
5.740 kmSouth Of Alaska, USAEMSC
5.710 kmAlaska Peninsula, USAGeoAu

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Knik-Fairview, Matanuska-Susitna, Alaska (981.7 km NNE of epicenter) [Map] / not felt (reported through our app)
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