Mag. 3.3 earthquake - North Pacific Ocean, 88 mi south of Sand Point, Alaska, USA, on 21 Oct 7:17 pm (GMT -11) -
This quake was likely an aftershock of the 7.6 quake Gulf of Alaska, 60 mi southeast of Sand Point, Aleutians East County, Alaska, USA, 19 Oct 2020 11:54 am (GMT -9), which had occurred 2 days earlier.
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Minor magnitude 3.3 earthquake at 21 km depth
22 Oct 07:25 UTC: First to report: EMSC after 1 hour and 8 minutes.
22 Oct 07:26: Now using data updates from USGS
22 Oct 07:26: Now using data updates from USGS
Local time at epicenter: 21 Oct 7:17 pm (GMT -11)
Magnitude: 3.3
Depth: 21.0 km
Epicenter latitude / longitude: 54.1395°N / 159.75°W
(North Pacific Ocean, United States)Nearest volcano: Dana (191 km / 119 mi)
Nearby towns and cities:
142 km (88 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
195 km (121 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
201 km (125 mi) S of Perryville (pop: 113) --> See nearby quakes!
224 km (139 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
227 km (141 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
244 km (151 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
249 km (155 mi) ESE of False Pass (pop: 40) --> See nearby quakes!
253 km (157 mi) SSW of Chignik Lagoon (pop: 78) --> See nearby quakes!
6171 km (3834 mi) NW of Washington (pop: 601,700) --> See nearby quakes!
6171 km (3834 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
73 km (45 mi) S of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Moderate Rain
9.7°C (50 F), humidity: 95%, wind: 14 m/s (27 kts) from E
Primary data source: USGS (United States Geological Survey)
Moderate Rain
9.7°C (50 F), humidity: 95%, wind: 14 m/s (27 kts) from EEstimated released energy: 5.6 x 109 joules (1.56 megawatt hours, equivalent to 1.34 tons of TNT) More info
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.
| Magnitude | Depth | Location | Source |
| M 3.3 | 21 km | 141 Km SSE of Sand Point, Alaska, USA | USGS |
| M 3.3 | 21 km | South Of Alaska, USA | EMSC |
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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Earlier earthquakes in the same area
Mag. 3.3 earthquake - North Pacific Ocean, 88 mi south of Sand Point, Alaska, USA, on 21 Oct 7:17 pm (GMT -11)
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