Mag. 4.5 earthquake - 79 mi south of Sand Point, Aleutians East County, Alaska, on Monday, 19 Oct 2020 11:28 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 33 minutes earlier.
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Light magnitude 4.5 earthquake at 26 km depth
19 Oct 23:40 UTC: First to report: EMSC after 1 hour and 12 minutes.
20 Oct 00:30: Magnitude recalculated from 4.0 to 4.5. Epicenter location corrected by 16.8 km (10.4 mi) towards NNW.
20 Oct 00:30: Magnitude recalculated from 4.0 to 4.5. Epicenter location corrected by 16.8 km (10.4 mi) towards NNW.
Local time at epicenter: Monday, 19 Oct 2020 11:28 am (GMT -11)
Magnitude: 4.5
Depth: 26.0 km
Epicenter latitude / longitude: 54.27°N / 159.77°W
(Gulf of Alaska, United States)Nearest volcano: Dana (195 km / 121 mi)
Nearby towns and cities:
127 km (79 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
186 km (116 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
187 km (116 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
215 km (134 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
391 km (243 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
443 km (276 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
591 km (367 mi) SW of Kodiak Station (pop: 1,300) --> See nearby quakes!
602 km (374 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6167 km (3832 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
6167 km (3832 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
59 km (37 mi) SSW of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds
8.2°C (47 F), humidity: 73%, wind: 7 m/s (14 kts) from WNW
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Few Clouds
8.2°C (47 F), humidity: 73%, wind: 7 m/s (14 kts) from WNWEstimated released energy: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 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 4.5 | 26 km | South Of Alaska, USA | EMSC |
| M 4.5 | 27 km | South of Alaska, USA | USGS |
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. 4.5 earthquake - 79 mi south of Sand Point, Aleutians East County, Alaska, on Monday, 19 Oct 2020 11:28 am (GMT -11)
Click here to search our database for earlier earthquakes in the same area since 1900!
