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Sismo leggero mag. 4.1 - 65 km a est da Sutton-Alpine, Borough di Matanuska-Susitna, Alaska, Stati Uniti, giovedì, 6 ott 2022 11:30 (GMT -8) -

Sismo leggero mag. 4.1 - 65 km a est da Sutton-Alpine, Borough di Matanuska-Susitna, Alaska, Stati Uniti, giovedì,  6 ott 2022 11:30 (GMT -8) Sismo leggero mag. 4.1 - 65 km a est da Sutton-Alpine, Borough di Matanuska-Susitna, Alaska, Stati Uniti, giovedì,  6 ott 2022 11:30 (GMT -8)

Sismo leggero magnitudine 4.1 a 29 km di profondità

6 Oct 19:33 UTC: Primo a segnalare: USGS dopo 2 minuti.
6 Oct 19:40: Magnitudine ricalcolata da 4.3 a 4.1. Profondità ricalcolata da 35.6 a 28.9 km (da 22 a 18 mi). Posizione dell'epicentro corretta di 1.8 km (1.1 mi) al NE.
Update Thu, 6 Oct 2022, 19:39

Moderate 4.3 quake hits near Sutton-Alpine, Matanuska-Susitna, Alaska, USA

4.3 quake 6 Oct 11:30 am (GMT -8)
4.3 quake 6 Oct 11:30 am (GMT -8)
A magnitude 4.3 earthquake near Sutton-Alpine, Matanuska-Susitna, Alaska, USA, was reported only 8 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 22 miles beneath the epicenter in the morning on Thursday, October 6th, 2022, at 11:30 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.
Our monitoring service identified a second report from The Incorporated Research Institutions for Seismology (IRIS) which listed the quake at magnitude 4.3 as well. Other agencies reporting the same quake include the citizen-seismograph network of RaspberryShake at magnitude 4.3, and the European-Mediterranean Seismological Centre (EMSC) at magnitude 4.3.
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 Glacier View (pop. 230) located 4 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Sutton-Alpine (pop. 1,400) located 39 miles from the epicenter, Butte (pop. 3,200) 52 miles away, Palmer (pop. 6,800) 53 miles away, Fishhook (pop. 4,700) 55 miles away, Gateway (pop. 5,600) 58 miles away, and Lakes (pop. 8,400) 59 miles away.
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 ora6 Oct 2022 19:30:50 UTC -
Ora locale all'epicentrogiovedì, 6 ott 2022 11:30 (GMT -8)
StatusConfermato
Magnitudine4.1
Prof.28.9 km
Epicentro latitudine / longitudine61.8518°N / 147.5401°W (Borough di Matanuska-Susitna, Alaska, Stati Uniti)
Antipode61.852°S / 32.46°E
Intensità di scuotimentoScuotimento debole
Sentito6 rapporti
Fonte dati primariaUSGS (United States Geological Survey)
Vulcano più vicinoWrangell (185 km / 115 mi)
Luoghi vicini8 km NE da Glacier View (pop: 234) | Mappa | Sismi nelle vicinanze
65 km E da Sutton-Alpine (pop: 1,450) | Mappa | Sismi nelle vicinanze
88 km ENE da Palmer (pop: 6,790) | Mappa | Sismi nelle vicinanze
90 km E da Fishhook (pop: 4,680) | Mappa | Sismi nelle vicinanze
97 km ENE da Lakes (pop: 8,360) | Mappa | Sismi nelle vicinanze
122 km ENE da Eagle River (pop: 24,800) | Mappa | Sismi nelle vicinanze
122 km ENE da Eagle River (Anchorage) (pop: 24,800) | Mappa | Sismi nelle vicinanze
144 km ENE da Alaska City (pop: 298,700) | Mappa | Sismi nelle vicinanze
Meteo all'epicentro al momento del sismoScattered Clouds 3.7°C (39 F), humidity: 75%, wind: 2 m/s (4 kts) from SW
Energia sismica rilasciata stimata8.9 x 1010 joules (24.8 MWh, equivalent to 21.3 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
4.129 km7 Km NE of Glacier View, AlaskaUSGS
4.336 kmSOUTHERN ALASKAEMSC
4.129 kmSouthern AlaskaRaspberryShake
4.310 kmSouthern AlaskaIRIS

Seismograms

Seismic station: Sheep Mountain, AK, USA (SCM/AK network) | Distance from quake: 11 km / 7 mi | Show on map | Station Info
Seismic station Sheep Mountain, AK, 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. Bandpass filter applied: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (6)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Translate
50 km of Sutton-Alpine, Matanuska-Susitna, Alaska (15.3 km W of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Wasilla Alaska / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s
Anchorage, Alaska / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
GIRDWOOD / Weak shaking (MMI III) / 1-2 s (reported through our app)
99504 / Weak shaking (MMI III) / simple rolling (tilting sideways along one direction) / very short
Wasilla / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s

Earlier earthquakes in the same area

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