Mag. 3.0 earthquake - Gulf of Alaska, 128 mi south of Kodiak, Alaska, USA, on Thursday, 20 August 2020 at 20:43 (GMT) -
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Minor magnitude 3.0 earthquake at 19 km depth
20 Aug 21:20 UTC: First to report: USGS after 37 minutes.
Aug 20 21:22: Magnitude recalculated from 2.9 to 2.8.
Aug 20 21:26: Magnitude recalculated from 2.8 to 3.0.
Hypocenter depth recalculated from 10.0 to 18.6 km.
Aug 20 21:22: Magnitude recalculated from 2.9 to 2.8.
Aug 20 21:26: Magnitude recalculated from 2.8 to 3.0.
Hypocenter depth recalculated from 10.0 to 18.6 km.
Magnitude: 3
Depth: 18.6 km
Epicenter latitude / longitude: 56.0182°N / 151.4103°W
(Gulf of Alaska, Alaska, United States)Nearby towns and cities:
176 km (109 mi) SE of Old Harbor (pop: 221) --> See nearby quakes!
185 km (115 mi) SSE of Chiniak (pop: 47) --> See nearby quakes!
198 km (123 mi) ESE of Akhiok (pop: 72) --> See nearby quakes!
200 km (124 mi) SSE of Womens Bay (pop: 719) --> See nearby quakes!
206 km (128 mi) SSE of Kodiak (pop: 6,250) --> See nearby quakes!
224 km (139 mi) SSE of Port Lions (pop: 197) --> See nearby quakes!
230 km (143 mi) SE of Larsen Bay (pop: 88) --> See nearby quakes!
245 km (152 mi) SSE of Aleneva (pop: 37) --> See nearby quakes!
5602 km (3481 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
5602 km (3481 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2 x 109 joules (554 kilowatt hours, equivalent to 0.477 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 3.0 | 19 km | 175 km SE of Old Harbor, Alaska (USA) | USGS |
| M 3.0 | 19 km | Kodiak Island Region, 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. 3.0 earthquake - Gulf of Alaska, 128 mi south of Kodiak, Alaska, USA, on Thursday, 20 August 2020 at 20:43 (GMT)
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