Sismo leggero mag. 4.2 - Gulf of Alaska, 108 km a sud-est da Sand Point, Borough delle Aleutine orientali County, Alaska, Stati Uniti, giovedì, 24 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.
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Sismo leggero magnitudine 4.2 at 27 km depth
24 Sep 15:56 UTC: Primo a segnalare: USGS dopo 47 minuti.
Data & ora: 24 Sep 2020 15:09:22 UTC -
Ora locale a epicentro: 24 Sep 9:01 am (GMT -7)
Magnitudine: 4.2
Profondità: 27.1 km
Epicentro latitudine / longitudine: 54.6745°N / 159.2702°W
(Gulf of Alaska, Alaska, Stati Uniti)Vulcano più vicino: Stepovak Bay 2 (146 km / 91 mi)
Nearby towns and cities:
108 km SE da Sand Point (pop: 1,060) --> Vedi sismi vicini
138 km S da Perryville (pop: 113) --> Vedi sismi vicini
179 km S da Chignik Lake (pop: 73) --> Vedi sismi vicini
188 km SSO da Chignik Lagoon (pop: 78) --> Vedi sismi vicini
200 km E da King Cove (pop: 1,010) --> Vedi sismi vicini
228 km ESE da Cold Bay (pop: 123) --> Vedi sismi vicini
425 km E da Akutan (pop: 1,040) --> Vedi sismi vicini
480 km ENE da Isola di Unalaska (pop: 4,490) --> Vedi sismi vicini
537 km SO da Kodiak Station (pop: 1,300) --> Vedi sismi vicini
547 km SO da Kodiak (pop: 6,250) --> Vedi sismi vicini
Fonte dati primaria: USGS (United States Geological Survey)
Stima dell'energia sismica liberata: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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.
| Magnitudine | Profondità | Ubicazione | Fonte |
| M 4.2 | 27 km | 107 Km SE of Sand Point, Alaska, USA | USGS |
| M 4.7 | 40 km | South Of Alaska, USA | EMSC |
User reports for this quake (2)
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Chignik Bay (188.1 km NNE of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 20-30 s : Rolling side to side slight rapid bumping vibrations in an up and down motion, as well, with the quake coming in two separate fluxes, each beginning with a jolt, but the second jolt was slightly more powerful. The jolts were less than 10 seconds apart from each other. It disturbed our older dog at rest, but our puppy slept right through it. Our two cats didn’t seem to visibly react with running our bolting around, but stayed put in their beds.
Chignik Bay (188.1 km NNE of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 20-30 s : Rolling side to side slight rapid bumping vibrations in an up and down motion, as well, with the quake coming in two separate fluxes, each beginning with a jolt, but the second jolt was slightly more powerful. The jolts were less than 10 seconds apart from each other. It disturbed our older dog at rest, but our puppy slept right through it. Our two cats didn’t seem to visibly react with running our bolting around, but stayed put in their beds.
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