Mag. 4.7 earthquake - Gulf of Alaska, 60 mi west of Akhiok, Alaska, USA, on 19 Oct 8:07 pm (GMT -8) -

Mag. 4.7 earthquake - Gulf of Alaska, 60 mi west of Akhiok, Alaska, USA, on 19 Oct 8:07 pm (GMT -8)

Light magnitude 4.7 earthquake at 0 km depth

20 Oct 04:12 UTC: First to report: USGS after 5 minutes.
20 Oct 04:17: Magnitude recalculated from 3.7 to 4.7. Hypocenter depth recalculated from 15.3 to 0.1 km (from 9.5 to 0.1 mi). Epicenter location corrected by 389 km (242 mi) towards NE.
Date & time: 20 Oct 2020 04:07:34 UTC -
Local time at epicenter: 19 Oct 8:07 pm (GMT -8)
Magnitude: 4.7
Depth: 0.1 km
Epicenter latitude / longitude: 56.9487°N / 155.7547°W (Gulf of Alaska, Alaska, United States)
Nearest volcano: Dana (195 km / 121 mi)
Nearby towns and cities:
96 km (60 mi) W of Akhiok (pop: 72) --> See nearby quakes!
222 km (138 mi) WSW of Kodiak (pop: 6,250) --> See nearby quakes!
344 km (214 mi) NE of Sand Point (pop: 1,060) --> See nearby quakes!
387 km (241 mi) SW of Homer (pop: 5,520) --> See nearby quakes!
389 km (242 mi) SW of Anchor Point (pop: 1,930) --> See nearby quakes!
405 km (251 mi) SW of Fritz Creek (pop: 1,930) --> See nearby quakes!
464 km (288 mi) SW of Kalifornsky (pop: 7,850) --> See nearby quakes!
492 km (306 mi) SW of Sterling (pop: 5,620) --> See nearby quakes!
5835 km (3626 mi) NW of Washington (District of Columbia) (pop: 601,700) --> See nearby quakes!
5835 km (3626 mi) NW of Washington DC (District of Columbia) (pop: 601,700) --> See nearby quakes!
146 km (91 mi) WSW of Kodiak Island (pop: 13,600) --> See nearby quakes!
70 km (43 mi) ENE of Ugaiushak Island --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 8.3°C (47 F), humidity: 71%, wind: 5 m/s (10 kts) from NNW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) More info
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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.
MagnitudeDepthLocationSource
M 4.70.1 km96 Km W of Akhiok, Alaska, USAUSGS
M 5.68 kmSouth Of Alaska, USAEMSC

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
388.4 km NE of epicenter [Map] / not felt (reported through our app)
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Earlier earthquakes in the same area since 1900

Mag. 4.7 earthquake - Gulf of Alaska, 60 mi west of Akhiok, Alaska, USA, on 19 Oct 8:07 pm (GMT -8)

Map of earlier quakes

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