Mag. 4.4 earthquake - Gulf of Alaska, 63 mi southeast of Sand Point, Alaska, USA, on Monday, 19 Oct 2020 10:29 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 34 minutes earlier.
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Light magnitude 4.4 earthquake at 26 km depth
19 Oct 23:28 UTC: First to report: USGS after 1 hour and 59 minutes.
20 Oct 00:38: Magnitude recalculated from 3.8 to 4.4. Hypocenter depth recalculated from 27.5 to 25.8 km (from 17.1 to 16 mi). Epicenter location corrected by 8.1 km (5 mi) towards NW.
20 Oct 00:38: Magnitude recalculated from 3.8 to 4.4. Hypocenter depth recalculated from 27.5 to 25.8 km (from 17.1 to 16 mi). Epicenter location corrected by 8.1 km (5 mi) towards NW.
Local time at epicenter: Monday, 19 Oct 2020 10:29 am (GMT -11)
Magnitude: 4.4
Depth: 25.8 km
Epicenter latitude / longitude: 54.5444°N / 159.6898°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Stepovak Bay 2 (161 km / 100 mi)
Nearby towns and cities:
102 km (63 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
156 km (97 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
178 km (111 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
199 km (124 mi) SSW of Chignik Lake (pop: 73) --> See nearby quakes!
207 km (128 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
397 km (247 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
451 km (280 mi) ENE of Unalaska (pop: 4,490) --> See nearby quakes!
577 km (359 mi) SW of Kodiak (pop: 6,250) --> See nearby quakes!
6151 km (3822 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6151 km (3822 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
28 km (18 mi) SSW of Chernabura Island --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.5 x 1011 joules (69.8 megawatt hours, equivalent to 60 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 4.4 | 26 km | 102 Km SSE of Sand Point, Alaska, USA | USGS |
| M 4.4 | 26 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. 4.4 earthquake - Gulf of Alaska, 63 mi southeast of Sand Point, Alaska, USA, on Monday, 19 Oct 2020 10:29 am (GMT -11)
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