Mag. 4.9 earthquake - 64 mi southeast of Sand Point, Aleutians East County, Alaska, on 19 Oct 1:00 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 3 hours earlier.
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Light magnitude 4.9 earthquake at 38 km depth
20 Oct 00:13 UTC: First to report: GFZ after 12 minutes.
20 Oct 00:15: Now using data updates from USGS
20 Oct 00:15: Now using data updates from USGS
Local time at epicenter: 19 Oct 1:00 pm (GMT -11)
Magnitude: 4.9
Depth: 37.5 km
Epicenter latitude / longitude: 54.5626°N / 159.6319°W
(Gulf of Alaska, United States)Nearest volcano: Stepovak Bay 2 (152 km / 94 mi)
Nearby towns and cities:
102 km (64 mi) SE of Sand Point (pop: 1,060) --> See nearby quakes!
153 km (95 mi) S of Perryville (pop: 113) --> See nearby quakes!
181 km (112 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
189 km (117 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
196 km (122 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
206 km (128 mi) SSW of Chignik Lagoon (pop: 78) --> See nearby quakes!
209 km (130 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
401 km (249 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
6147 km (3820 mi) NW of Washington (pop: 601,700) --> See nearby quakes!
6147 km (3820 mi) NW of Washington DC (pop: 601,700) --> See nearby quakes!
25 km (16 mi) S of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
8.2°C (47 F), humidity: 72%, wind: 6 m/s (12 kts) from WNW
Primary data source: USGS (United States Geological Survey)
Scattered Clouds
8.2°C (47 F), humidity: 72%, wind: 6 m/s (12 kts) from WNWEstimated 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 | 38 km | 102 Km SSE of Sand Point, Alaska, USA | USGS |
| M 5.0 | 27 km | South of Alaska, USA | GFZ |
| M 4.9 | 30 km | South Of Alaska, USA | EMSC |
| M 5.0 | 22 km | South of Alaska, USA | GeoAu |
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 - 64 mi southeast of Sand Point, Aleutians East County, Alaska, on 19 Oct 1:00 pm (GMT -11)
Click here to search our database for earlier earthquakes in the same area since 1900!
