Terremoto moderado mag. 4.0 - North Pacific Ocean, 144 miles SSE of Unalaska, Aleutians West (CA), Alaska, USA, Tuesday, 23 Feb. 2021 -
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Terremoto moderado magnitud 4.0 at 10 km depth
23 Feb 22:50 UTC: Primero en informar: EMSC después de 16 minutos.
23 Feb 22:50: Ahora usando una nueva fuente de datos: USGS
23 Feb 22:50: Ahora usando una nueva fuente de datos: USGS
Fecha & hora: 23 Feb 2021 22:33:36 UTC -
Hora local al epicentro: Tuesday, 23 Feb 2021 11:33 (GMT -11)
Magnitud: 4
Profundidad: 10.0 km
Epicentro latitud / longitud: 51.8497°N / 165.6771°W

Volcán mas cercano: Okmok (241 km / 150 mi)
Nearby towns and cities:
232 km al SSE de Unalaska (pop: 4,490) --> ¡Vea sismos cercanos!
248 km al ESE de Nikolski (pop: 18) --> ¡Vea sismos cercanos!
254 km al S de Akutan (pop: 1,040) --> ¡Vea sismos cercanos!
366 km al SSO de False Pass (pop: 40) --> ¡Vea sismos cercanos!
419 km al SSO de Cold Bay (pop: 123) --> ¡Vea sismos cercanos!
421 km al SSO de King Cove (pop: 1,010) --> ¡Vea sismos cercanos!
517 km al SO de Sand Point (pop: 1,060) --> ¡Vea sismos cercanos!
546 km al SO de Nelson Lagoon (pop: 52) --> ¡Vea sismos cercanos!
622 km al SO de Perryville (pop: 113) --> ¡Vea sismos cercanos!
666 km al SO de Chignik Lake (pop: 73) --> ¡Vea sismos cercanos!
Weather at epicenter at time of quake:
Light Rain
4.1°C (39 F), humidity: 94%, wind: 12 m/s (23 kts) from S
Fuente primaria de datos: USGS (United States Geological Survey)Light Rain

Energía liberada estimada: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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.
Magnitud | Profundidad | Ubicación | Fuente |
4.0 | 10 km | 232 Km SSE of Unalaska, Alaska, USA | USGS |
4.0 | 10 km | SOUTH OF ALEUTIAN ISLANDS, USA | EMSC |
User reports for this quake
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There are no user reports for this quake yet. If you felt it Earlier earthquakes in the same area since 1900
- Date / time UTC| Mag |Profundidad|Age|Distancia| Detalles
- 02 Jul 1965 20:58| 7.8 |45km / 28mi|hace 56 años|189km / 117mi| Bering Sea, 28 mi S of Breed Island, Aleutians West, Alaska, USA
- 08 Sep 1909 16:49| 7.4 |90km / 56mi|hace 112 años|238km / 148mi| Bering Sea, 35 mi S of Anangula Island, Aleutians West, Alaska, USA
- 22 Mar 1957 14:21| 7.1 |47km / 29mi|hace 64 años|215km / 133mi| Bering Sea, 13 mi SE of Egg Island, Aleutians West, Alaska, USA
- 27 Jul 1944 00:04| 7.1 |70km / 43mi|hace 77 años|239km / 149mi| Bering Sea, 3.4 mi SE of Rootok Island, Aleutians East County, Alaska, USA
- 01 Jan 1902 05:20| 7.0 |unknown|hace 119 años|135km / 84mi| North Pacific Ocean, 72 mi S of Breed Island, Aleutians West, Alaska, USA
- 22 Aug 1940 03:27| 6.9 |15km / 9.3mi|hace 81 años|56km / 35mi| North Pacific Ocean, 113 mi S of Unalaska, Aleutians West (CA), Alaska, USA
- 13 Oct 2009 05:37| 6.5 |24km / 15mi|hace 12 años|135km / 84mi| North Pacific Ocean, 80 mi S of Unalaska, Aleutians West (CA), Alaska, USA
- 19 Apr 1957 22:19| 6.5 |14.5km / 9mi|hace 64 años|62km / 39mi| North Pacific Ocean, 114 mi S of Unalaska, Aleutians West (CA), Alaska, USA
- 13 Oct 2009 20:21| 6.4 |14km / 8.7mi|hace 12 años|129km / 80mi| North Pacific Ocean, 91 mi S of Unalaska, Aleutians West (CA), Alaska, USA
- 15 Mar 1957 02:52| 6.4 |25km / 16mi|hace 64 años|142km / 88mi| North Pacific Ocean, 81 mi S of Unalaska, Aleutians West (CA), Alaska, USA
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