Light mag. 3.3 earthquake - North Pacific Ocean, 91 mi southeast of Sand Point, Alaska, USA, on 20 Oct 11:03 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 1 jour 13 heures earlier.
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Séisme faible magnitude 3.3 at 20 km depth
21 Oct 10:20 UTC: Premier à signaler: USGS après 17 minutes.
Date & time: 21 Oct 2020 10:03:30 UTC -
Local time at epicenter: 20 Oct 11:03 pm (GMT -11)
Magnitude: 3.3
Profondeur: 20.0 km
Epicenter latitude / longitude: 54.1272°N / 159.5779°W
(Océan Pacifique Nord, Alaska, États-Unis)Volcan le plus près: Dana (198 km / 123 mi)
Nearby towns and cities:
147 km SSE de Sand Point (pop: 1,060) --> Voir les séismes à proximité!
200 km S de Perryville (pop: 113) --> Voir les séismes à proximité!
205 km ESE de King Cove (pop: 1,010) --> Voir les séismes à proximité!
233 km SSE de Nelson Lagoon (pop: 52) --> Voir les séismes à proximité!
234 km ESE de Cold Bay (pop: 123) --> Voir les séismes à proximité!
242 km SSO de Chignik Lake (pop: 73) --> Voir les séismes à proximité!
252 km SSO de Chignik Lagoon (pop: 78) --> Voir les séismes à proximité!
260 km ESE de False Pass (pop: 40) --> Voir les séismes à proximité!
319 km S de Port Heiden (pop: 98) --> Voir les séismes à proximité!
Weather at epicenter at time of quake:
Overcast Clouds
7.5°C (45 F), humidity: 81%, wind: 13 m/s (24 kts) from E
Primary data source: USGS (United States Geological Survey)Overcast Clouds
7.5°C (45 F), humidity: 81%, wind: 13 m/s (24 kts) from EEstimated released energy: 5.6 x 109 joules (1.56 megawatt hours, equivalent to 1.34 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 | Profondeur | Location | Source |
| M 3.3 | 20 km | 147 Km SSE of Sand Point, Alaska, USA | USGS |
| M 3.3 | 20 km | South Of Alaska, USA | EMSC |
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