Terremoto moderato mag. 4.7 - Gulf of Alaska, 55 km a sud da Sand Point, Borough delle Aleutine orientali County, Alaska, Stati Uniti, giovedì, 23 luglio 2020 -
Questo terremoto era probabilmente un aftershock del M 7.8 terremoto: Gulf of Alaska, 50 km a est da Simeonof , Borough delle Aleutine orientali County, Alaska, Stati Uniti Wed, 22 Jul 2020 06:12che si è verificato 1 giorno 14 ore prima.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US| Alaska | Alaska
Terremoto moderato magnitudine 4.7 at 40 km depth
23 Jul 21:22 UTC: Primo a segnalare: USGS dopo 1 ora e 25 minuti.
Jul 24 17:14: Magnitudine ricalcolata da 4.6 a 4.8.
Profondità ricalcolata da 13.2 a 43.0 km.
Jul 30 14:14: Magnitudine ricalcolata da 4.8 a 4.7.
Profondità ricalcolata da 43.0 a 40.0 km.
Jul 24 17:14: Magnitudine ricalcolata da 4.6 a 4.8.
Profondità ricalcolata da 13.2 a 43.0 km.
Jul 30 14:14: Magnitudine ricalcolata da 4.8 a 4.7.
Profondità ricalcolata da 43.0 a 40.0 km.
Data & ora: 23 Jul 2020 19:56:50 UTC -
Magnitudine: 4.7
Profondità: 40.0 km
Epicentro latitudine / longitudine: 54.8493°N / 160.6606°W
(Gulf of Alaska, Alaska, Stati Uniti)Vulcano più vicino: Dana (90 km / 56 mi)
Nearby towns and cities:
55 km S da Sand Point (pop: 1,060) --> Vedi sismi vicini
108 km E da King Cove (pop: 1,010) --> Vedi sismi vicini
133 km SSE da Nelson Lagoon (pop: 52) --> Vedi sismi vicini
137 km ESE da Cold Bay (pop: 123) --> Vedi sismi vicini
152 km SO da Perryville (pop: 113) --> Vedi sismi vicini
176 km E da False Pass (pop: 40) --> Vedi sismi vicini
197 km SO da Chignik Lake (pop: 73) --> Vedi sismi vicini
210 km SO da Chignik Lagoon (pop: 78) --> Vedi sismi vicini
340 km ENE da Akutan (pop: 1,040) --> Vedi sismi vicini
396 km ENE da Isola di Unalaska (pop: 4,490) --> Vedi sismi vicini
Fonte dati primaria: USGS (United States Geological Survey)
Stima dell'energia sismica liberata: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 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.
| Magnitudine | Profondità | Ubicazione | Fonte |
| M 5.0 | 45 km | Alaska Peninsula (USA) | GeoAu |
| M 5.1 | 37 km | Alaska Peninsula (USA) | GFZ |
| M 5.1 | 40 km | Alaska Peninsula (USA) | EMSC |
| M 4.7 | 40 km | 55 km S of Sand Point, Alaska (USA) | USGS |
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 since 1900
- Date / time UTC| Mag |Profondità|Age|Distanza| Details
- 01 Apr 1946 12:29| 8.6 |15km / 9.3mi|75 anni fa|207km / 129mi| North Pacific Ocean, 154 mi E of Unalaska, Aleutians West (CA) County, Alaska, USA
- 10 Nov 1938 20:18| 8.2 |35km / 22mi|82 anni fa|162km / 101mi| Gulf of Alaska, 47 mi NE of Simeonof Island, Aleutians East County, Alaska, USA
- 22 Jul 2020 06:12| 7.8 |28km / 17mi|32 settimane fa|138km / 86mi| Gulf of Alaska, 31 mi E of Simeonof Island, Aleutians East County, Alaska, USA
- 31 May 1917 08:47| 7.4 |35km / 22mi|104 anni fa|79km / 49mi| Gulf of Alaska, 5.3 mi SW of Little Koniuji Island, Aleutians East County, Alaska, USA
- 14 May 1948 22:31| 7.1 |25km / 16mi|73 anni fa|43km / 27mi| Gulf of Alaska, 55 mi SE of King Cove, Aleutians East County, Alaska, USA
- 30 May 1991 13:17| 7.0 |28km / 18mi|30 anni fa|68km / 42mi| Gulf of Alaska, 31 mi E of Cherni Island, Aleutians East County, Alaska, USA
- 13 May 1993 11:59| 6.9 |32km / 20mi|28 anni fa|39km / 24mi| Gulf of Alaska, 11 mi S of Sand Point, Aleutians East County, Alaska, USA
- 10 Dec 1905 12:36| 6.9 |unknown|115 anni fa|126km / 78mi| North Pacific Ocean, 57 mi SE of Sanak Island, Aleutians East County, Alaska, USA
- 12 Feb 1940 09:17| 6.8 |unknown|81 anni fa|56km / 35mi| Gulf of Alaska, 14 mi S of Wosnesenski Island, Aleutians East County, Alaska, USA
- 09 Oct 1985 09:33| 6.6 |30km / 19mi|35 anni fa|68km / 42mi| Gulf of Alaska, 2.8 mi SW of Chernabura Island, Aleutians East County, Alaska, USA
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