Terremoto moderato mag. 4.9 - Gulf of Alaska, 161 km a est da Sand Point, Borough delle Aleutine orientali County, Alaska, Stati Uniti, venerdì, 25 settembre 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 9 settimane prima.
Quake Data | Interactive map | User Reports | Earlier quakes in same area | Quakes in the US| Alaska | Alaska
Terremoto moderato magnitudine 4.9 at 10 km depth
25 Sep 06:04 UTC: Primo a segnalare: USGS dopo 6 minuti.
25 Sep 06:11: Magnitudine ricalcolata da 5.4 a 4.9. Profondità ricalcolata da 21.0 a 26.3 km (da 13 a 16.3 mi). Posizione dell'epicentro corretta di 15.5 km (9.6 mi) al SSW.
25 Sep 06:15: Profondità ricalcolata da 26.3 a 10.0 km (da 16.3 a 6.2 mi). Posizione dell'epicentro corretta di 14.6 km (9.1 mi) al SSW.
25 Sep 06:11: Magnitudine ricalcolata da 5.4 a 4.9. Profondità ricalcolata da 21.0 a 26.3 km (da 13 a 16.3 mi). Posizione dell'epicentro corretta di 15.5 km (9.6 mi) al SSW.
25 Sep 06:15: Profondità ricalcolata da 26.3 a 10.0 km (da 16.3 a 6.2 mi). Posizione dell'epicentro corretta di 14.6 km (9.1 mi) al SSW.
Data & ora: 25 Sep 2020 05:57:57 UTC -
Ora locale a epicentro: 24 Sep 9:57 pm (GMT -8)
Magnitudine: 4.9
Profondità: 10.0 km
Epicentro latitudine / longitudine: 55.0499°N / 158.0177°W
(Gulf of Alaska, Alaska, Stati Uniti)Vulcano più vicino: Veniaminof (146 km / 91 mi)
Nearby towns and cities:
119 km SE da Perryville (pop: 113) --> Vedi sismi vicini
142 km SSE da Chignik Lake (pop: 73) --> Vedi sismi vicini
144 km SSE da Chignik Lagoon (pop: 78) --> Vedi sismi vicini
161 km E da Sand Point (pop: 1,060) --> Vedi sismi vicini
214 km S da Port Heiden (pop: 98) --> Vedi sismi vicini
227 km ESE da Nelson Lagoon (pop: 52) --> Vedi sismi vicini
274 km E da King Cove (pop: 1,010) --> Vedi sismi vicini
300 km E da Cold Bay (pop: 123) --> Vedi sismi vicini
450 km SO da Kodiak Station (pop: 1,300) --> Vedi sismi vicini
460 km SO da Kodiak (pop: 6,250) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Broken Clouds
9.7°C (49 F), humidity: 73%, wind: 3 m/s (5 kts) from NW
Fonte dati primaria: USGS (United States Geological Survey)Broken Clouds
9.7°C (49 F), humidity: 73%, wind: 3 m/s (5 kts) from NWStima dell'energia sismica liberata: 1.4 x 1012 joules (392 megawatt hours, equivalent to 338 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 4.9 | 10 km | Alaska Peninsula, USA | USGS |
| M 4.9 | 24 km | Alaska Peninsula, USA | GFZ |
| M 4.9 | 30 km | Alaska Peninsula, USA | EMSC |
| M 5.0 | 15 km | Alaska Peninsula, USA | GeoAu |
| M 5.6 | 10 km | Alaska Peninsula, USA | BMKG |
User reports for this quake (2)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Perryville (114.1 km NW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / very short (reported through our app)
Portland Oregon / Weak shaking (MMI III) / rattling, vibrating / 20-30 s : This is the only quake in the northern hemisphere at the time. We thought it was closer, but don't see any others. I was already awake, but my wife was awakened by the shaking.
Earlier earthquakes in the same area
Click here to search our database for earlier earthquakes in the same area since 1900!
