Mag. 4.9 earthquake - 27 mi south of Sand Point, Aleutians East County, Alaska, on Monday, 26 Oct 2020 12:25 am (GMT -9) -
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 7 days earlier.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US | Alaska | Washington, D.C.
Light magnitude 4.9 earthquake at 45 km depth
26 Oct 09:38 UTC: First to report: GFZ after 13 minutes.
26 Oct 09:50: Magnitude recalculated from 5.0 to 5.2. Hypocenter depth recalculated from 97.0 to 36.0 km (from 60 to 22 mi). Epicenter location corrected by 16.1 km (10 mi) towards E.
29 Oct 12:02: Now using data updates from USGS
26 Oct 09:50: Magnitude recalculated from 5.0 to 5.2. Hypocenter depth recalculated from 97.0 to 36.0 km (from 60 to 22 mi). Epicenter location corrected by 16.1 km (10 mi) towards E.
29 Oct 12:02: Now using data updates from USGS
Local time at epicenter: Monday, 26 Oct 2020 12:25 am (GMT -9)
Magnitude: 4.9
Depth: 45.3 km
Epicenter latitude / longitude: 54.9466°N / 160.3852°W
(Gulf of Alaska, United States)Nearest volcano: Dana (89 km / 55 mi)
Nearby towns and cities:
44 km (27 mi) S of Sand Point (pop: 1,060) --> See nearby quakes!
124 km (77 mi) E of King Cove (pop: 1,010) --> See nearby quakes!
128 km (80 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
133 km (83 mi) SW of Perryville (pop: 113) --> See nearby quakes!
151 km (94 mi) E of Cold Bay (pop: 123) --> See nearby quakes!
178 km (110 mi) SW of Chignik Lake (pop: 73) --> See nearby quakes!
359 km (223 mi) ENE of Akutan (pop: 1,040) --> See nearby quakes!
415 km (258 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
6178 km (3839 mi) NW of Washington (pop: 601,700) --> See nearby quakes!
6178 km (3839 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
28 km (17 mi) SSW of Shumagin s Island --> See nearby quakes!
56 km (35 mi) WNW of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Overcast Clouds
7°C (45 F), humidity: 75%, wind: 3 m/s (6 kts) from W
Primary data source: USGS (United States Geological Survey)
Overcast Clouds
7°C (45 F), humidity: 75%, wind: 3 m/s (6 kts) from WEstimated released energy: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 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 4.9 | 45 km | 44 Km S of Sand Point, Alaska, USA | USGS |
| M 4.9 | 60 km | Alaska Peninsula, USA | EMSC |
| M 5.1 | 35 km | Alaska Peninsula, USA | GeoAu |
| M 5.2 | 25 km | Alaska Peninsula, USA | GFZ |
| M 4.9 | 45 km | 44 Km S of Sand Point, 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. 4.9 earthquake - 27 mi south of Sand Point, Aleutians East County, Alaska, on Monday, 26 Oct 2020 12:25 am (GMT -9)
Click here to search our database for earlier earthquakes in the same area since 1900!
