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Terremoto moderato mag. 5.3 - 99 km a ovest da Florida Blanca , Borough di Kodiak Island, Alaska, Stati Uniti, sabato, 13 feb 2021 04:08 (GMT -9)

Terremoto moderato mag. 5.3 - 99 km a ovest da Florida Blanca , Borough di Kodiak Island, Alaska, Stati Uniti, sabato, 13 feb 2021 04:08 (GMT -9) Terremoto moderato mag. 5.3 - 99 km a ovest da Florida Blanca , Borough di Kodiak Island, Alaska, Stati Uniti, sabato, 13 feb 2021 04:08 (GMT -9)

Terremoto moderato magnitudine 5.3 a 39 km di profondità

13 Feb 13:13 UTC: Primo a segnalare: EMSC dopo 5 minuti.
13 Feb 13:13: Ora utilizzando nuova fonte di dati: USGS
... [show all] ...
13 Feb 13:25: Profondità ricalcolata da 48.1 a 39.3 km (da 30 a 24 mi). Posizione dell'epicentro corretta di 4.1 km (2.6 mi) al SSW.
Update Sat, 13 Feb 2021, 13:18

Significant 5.4 quake hits near Akhiok, Kodiak Island County, Alaska, USA

5.4 quake 13 Feb 4:08 am (GMT -9)
5.4 quake 13 Feb 4:08 am (GMT -9)
A magnitude 5.4 earthquake near Akhiok, Kodiak Island County, Alaska, USA, was reported only 9 minutes ago by the United States Geological Survey, considered the key international and national agency that monitors seismic activity in the US. The earthquake occurred at a moderately shallow depth of 39 miles beneath the epicenter early morning on Saturday 13 February 2021 at 4:08 am local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the German Research Centre for Geosciences (GFZ), which listed it as a magnitude 5.6 earthquake. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 5.4.
Based on the preliminary seismic data, the quake should not have caused any significant damage, but was probably felt by many people as light vibration in the area of the epicenter.
Weak shaking might have been felt in Akhiok (pop. 72) located 34 miles from the epicenter.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Dettagli del sismo

Data e ora13 Feb 2021 13:08:55 UTC
Ora locale all'epicentrosabato, 13 feb 2021 04:08 (GMT -9)
StatusConfermato
Magnitudine5.3
Prof.39.3 km
Epicentro latitudine / longitudine57.1226°N / 155.0514°W (Gulf of Alaska, Alaska, Stati Uniti)
Antipode57.123°S / 24.949°E
Intensità di scuotimentoScuotimento leggero vicino all'epicentro
Sentito0 rapporti
Fonte dati primariaUSGS (United States Geological Survey)
Vulcano più vicinoUnnamed 57.87°N/155.42°W (86 km / 53 mi)
Luoghi vicini57 km ONO da Akhiok (pop: 72) | Mappa | Sismi nelle vicinanze
61 km SO da Karluk (pop: 37) | Mappa | Sismi nelle vicinanze
79 km SO da Larsen Bay (pop: 88) | Mappa | Sismi nelle vicinanze
163 km OSO da Kodiak Station (pop: 1,300) | Mappa | Sismi nelle vicinanze
175 km OSO da Kodiak (pop: 6,250) | Mappa | Sismi nelle vicinanze
292 km SE da Dillingham (pop: 2,400) | Mappa | Sismi nelle vicinanze
347 km SO da Homer (pop: 5,520) | Mappa | Sismi nelle vicinanze
426 km SSO da Kalifornsky (pop: 7,850) | Mappa | Sismi nelle vicinanze
440 km SSO da Kenai (pop: 7,660) | Mappa | Sismi nelle vicinanze
453 km SO da Sterling (pop: 5,620) | Mappa | Sismi nelle vicinanze
Meteo all'epicentro al momento del sismoOvercast Clouds 2.5°C (36 F), humidity: 80%, wind: 12 m/s (24 kts) from E
Energia sismica rilasciata stimata5.6 x 1012 joules (1.56 GWh, equivalent to 1344 tons of TNT) | about seismic energy
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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.
Mag.Prof.UbicazioneFonte
5.339 kmAlaska Peninsula, USAUSGS
5.357 kmALASKA PENINSULA, USAEMSC
5.251 kmAlaska Peninsula, USAGFZ
5.348 kmAlaska Peninsula, USAGeoAu
5.5109 kmAlaska Peninsula, USABMKG

Seismograms

Seismic station: Kodiak Island, Alaska, USA (KDAK/II network) | Distance from quake: 165 km / 102 mi | Show on map | Station Info
Seismic station Kodiak Island, Alaska, USA: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Source: IRIS Buffer of Uniform Data (BUD) webtool
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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.

Aftershocks

[More info]

Scosse di assestamento, piu recenti per prima (22 in tutto)

Data e oraMag.
Prof.
UbicazioneDettagli
14 apr 2021 07:28
1 anno 25 settimane fa
2.9

8.4 km
186 km O da Kodiak, Alaska, Stati UnitiPiù
12 apr 2021 11:38
1 anno 25 settimane fa
3.5

14 km
50 km O da Akhiok, Borough di Kodiak Island, Alaska, Stati UnitiPiù
9 apr 2021 01:33
1 anno 25 settimane fa
2.1

57 km
58 Km SW of Karluk, Alaska, USAPiù
1 apr 2021 19:24
1 anno 26 settimane fa
2.5

28 km
62 Km SW of Karluk, Alaska, USAPiù
16 mar 2021 14:56
1 anno 29 settimane fa
2.0

78 km
69 Km WNW of Akhiok, Alaska, USAPiù
16 mar 2021 07:45
1 anno 29 settimane fa
2.0

29 km
56 Km SW of Karluk, Alaska, USAPiù
28 feb 2021 04:30
1 anno 31 settimane fa
2.5

35 km
90 km O da Florida Blanca , Borough di Kodiak Island, Alaska, Stati UnitiPiù
28 feb 2021 04:30
1 anno 31 settimane fa
2.5

37 km
3 Km SSE of Karluk, Alaska, USAPiù
24 feb 2021 12:17
1 anno 31 settimane fa
2.0

35 km
55 Km WNW of Akhiok, Alaska, USAPiù
23 feb 2021 09:35
1 anno 32 settimane fa
2.0

32 km
55 Km WNW of Akhiok, Alaska, USAPiù
22 feb 2021 20:30
1 anno 32 settimane fa
2.8

56 km
84 km O da Florida Blanca , Borough di Kodiak Island, Alaska, Stati UnitiPiù
15 feb 2021 15:29
1 anno 33 settimane fa
2.1

55 km
57 Km WNW of Akhiok, Alaska, USAPiù
14 feb 2021 16:00
1 anno 33 settimane fa
2.5

29 km
53 Km SW of Karluk, Alaska, USAPiù
14 feb 2021 14:11
1 anno 33 settimane fa
2.7

48 km
99 km O da Florida Blanca , Borough di Kodiak Island, Alaska, Stati UnitiPiù
14 feb 2021 08:27
1 anno 33 settimane fa
2.5

23 km
52 Km SW of Karluk, Alaska, USAPiù
13 feb 2021 16:21
1 anno 33 settimane fa
2.3

35 km
58 Km WNW of Akhiok, Alaska, USAPiù
13 feb 2021 15:51
1 anno 33 settimane fa
2.3

21 km
49 Km SW of Karluk, Alaska, USAPiù
13 feb 2021 15:05
1 anno 33 settimane fa
2.4

36 km
Alaska Peninsula, USAPiù
13 feb 2021 14:37
1 anno 33 settimane fa
2.3

66 km
Alaska Peninsula, USAPiù
13 feb 2021 14:35
1 anno 33 settimane fa
2.4

61 km
57 Km WNW of Akhiok, Alaska, USAPiù
13 feb 2021 13:20
1 anno 33 settimane fa
3.4

29 km
99 km O da Florida Blanca , Borough di Kodiak Island, Alaska, Stati UnitiPiù
13 feb 2021 13:17
1 anno 33 settimane fa
2.4

10.5 km
50 Km SW of Karluk, Alaska, USAPiù

Earlier earthquakes in the same area

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