Mag. 4.3 earthquake - Gulf of Alaska, 71 mi south of Sand Point, Alaska, USA, on Monday, 19 Oct 2020 11:17 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 23 minutes earlier.
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Light magnitude 4.3 earthquake at 6 km depth
19 Oct 22:49 UTC: First to report: USGS after 32 minutes.
20 Oct 02:02: Magnitude recalculated from 4.4 to 4.3. Hypocenter depth recalculated from 35.0 to 6.2 km (from 22 to 3.9 mi). Epicenter location corrected by 51 km (32 mi) towards S.
20 Oct 02:02: Magnitude recalculated from 4.4 to 4.3. Hypocenter depth recalculated from 35.0 to 6.2 km (from 22 to 3.9 mi). Epicenter location corrected by 51 km (32 mi) towards S.
Local time at epicenter: Monday, 19 Oct 2020 11:17 am (GMT -11)
Magnitude: 4.3
Depth: 6.2 km
Epicenter latitude / longitude: 54.3242°N / 160.1589°W
(Gulf of Alaska, Alaska, United States)Nearest volcano: Dana (119 km / 74 mi)
Nearby towns and cities:
115 km (71 mi) SSE of Sand Point (pop: 1,060) --> See nearby quakes!
161 km (100 mi) ESE of King Cove (pop: 1,010) --> See nearby quakes!
188 km (117 mi) SSW of Perryville (pop: 113) --> See nearby quakes!
190 km (118 mi) ESE of Cold Bay (pop: 123) --> See nearby quakes!
198 km (123 mi) SSE of Nelson Lagoon (pop: 52) --> See nearby quakes!
366 km (227 mi) E of Akutan (pop: 1,040) --> See nearby quakes!
419 km (260 mi) E of Unalaska (pop: 4,490) --> See nearby quakes!
605 km (376 mi) SW of Kodiak Station (pop: 1,300) --> See nearby quakes!
6188 km (3845 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
6188 km (3845 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
65 km (40 mi) SW of Chernabura Island --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
8°C (46 F), humidity: 70%, wind: 4 m/s (8 kts) from WNW
Primary data source: USGS (United States Geological Survey)
Scattered Clouds
8°C (46 F), humidity: 70%, wind: 4 m/s (8 kts) from WNWEstimated released energy: 1.8 x 1011 joules (49.4 megawatt hours, equivalent to 42.5 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 4.3 | 6.2 km | 114 Km S of Sand Point, Alaska, USA | USGS |
| M 4.4 | 35 km | Alaska Peninsula, 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. 4.3 earthquake - Gulf of Alaska, 71 mi south of Sand Point, Alaska, USA, on Monday, 19 Oct 2020 11:17 am (GMT -11)
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