Mag. 3.5 earthquake - North Pacific Ocean, 87 mi south of Sand Point, Alaska, USA, on 19 Oct 11:00 am (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 1 hour and 6 minutes earlier.
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Minor magnitude 3.5 earthquake at 22 km depth
19 Oct 22:17 UTC: First to report: EMSC after 16 minutes.
19 Oct 22:17: Now using data updates from USGS
19 Oct 22:19: Now using data updates from USGS
19 Oct 22:20: Magnitude recalculated from 4.1 to 3.5. Hypocenter depth recalculated from 13.9 to 21.7 km (from 8.6 to 13.5 mi). Epicenter location corrected by 28 km (17.2 mi) towards ENE.
19 Oct 22:17: Now using data updates from USGS
19 Oct 22:19: Now using data updates from USGS
19 Oct 22:20: Magnitude recalculated from 4.1 to 3.5. Hypocenter depth recalculated from 13.9 to 21.7 km (from 8.6 to 13.5 mi). Epicenter location corrected by 28 km (17.2 mi) towards ENE.
Local time at epicenter: 19 Oct 11:00 am (GMT -11)
Magnitude: 3.5
Depth: 21.7 km
Epicenter latitude / longitude: 54.1451°N / 159.8266°W
(North Pacific Ocean, Alaska, United States)Nearest volcano: Dana (189 km / 117 mi)
Nearby towns and cities:
139 km (87 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
190 km (118 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
201 km (125 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
219 km (136 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
224 km (139 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
244 km (152 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
256 km (159 mi) SSW of Chignik (pop: 87) --> See nearby quakes!
388 km (241 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
6175 km (3837 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6175 km (3837 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
73 km (46 mi) SSW of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
8.2°C (47 F), humidity: 71%, wind: 6 m/s (12 kts) from WNW
Primary data source: USGS (United States Geological Survey)
Clear Sky
8.2°C (47 F), humidity: 71%, wind: 6 m/s (12 kts) from WNWEstimated released energy: 1.1 x 1010 joules (3.12 megawatt hours, equivalent to 2.68 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 3.5 | 22 km | 202 Km SSE of King Cove, Alaska, USA | USGS |
| M 3.6 | 3 km | South Of Alaska, USA | EMSC |
| M 3.6 | 2.6 km | 141 Km S of Sand Point, Alaska, USA | USGS |
| M 4.3 | 19 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.
There are no user reports for this quake yet. If you felt it be the first to report it!
Earlier earthquakes in the same area
Mag. 3.5 earthquake - North Pacific Ocean, 87 mi south of Sand Point, Alaska, USA, on 19 Oct 11:00 am (GMT -11)
Click here to search our database for earlier earthquakes in the same area since 1900!
