Weak mag. 3.1 earthquake - North Pacific Ocean, 149 mi south of Sandpoint, Aleutians East, Alaska, USA, on Friday, Sep 17, 2021 12:15 pm (GMT -11) -

This quake was likely an aftershock of the 8.2 quake Chignik Earthquake, Gulf of Alaska, July, 29 2021 06:15 GMT, which had occurred 7 weeks earlier.
Weak mag. 3.1 earthquake - North Pacific Ocean, 149 mi south of Sandpoint, Aleutians East, Alaska, USA, on Friday, Sep 17, 2021 12:15 pm (GMT -11)

Weak magnitude 3.1 earthquake at 29 km depth

17 Sep 23:27 UTC: First to report: USGS after 12 minutes.
17 Sep 23:37: Magnitude recalculated from 2.9 to 3.1. Hypocenter depth recalculated from 21.2 to 29.4 km (from 13.2 to 18.3 mi). Epicenter location corrected by 21 km (13 mi) towards SE.
Date & time: Sep 17, 2021 23:15:28 UTC -
Local time at epicenter: Friday, Sep 17, 2021 12:15 pm (GMT -11)
Magnitude: 3.1
Depth: 29.4 km
Epicenter latitude / longitude: 53.1843°N / 160.1547°W (North Pacific Ocean, Alaska, United States)
Antipode: 53.184°S / 19.845°E
Nearest volcano: Dutton (240 km / 149 mi)
Nearby towns and cities:
240 km (149 mi) S of Sandpoint (pop: 1,060) --> See nearby quakes!
252 km (157 mi) SE of King Cove (pop: 1,010) --> See nearby quakes!
278 km (173 mi) SE of Cold Bay (pop: 123) --> See nearby quakes!
282 km (175 mi) SE of False Pass (pop: 40) --> See nearby quakes!
310 km (193 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
320 km (199 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds 10°C (50 F), humidity: 80%, wind: 14 m/s (28 kts) from NW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.8 x 109 joules (783 kilowatt hours, equivalent to 0.674 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.
3.129 km240 Km S of Sand Point, AlaskaUSGS

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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