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Terremoto moderato mag. 4.8 - North Pacific Ocean, 72 km a sud ovest da Eureka, Contea di Humboldt County, Contea di Kern, Stati Uniti, sabato, 24 set 2022 11:27 (GMT -8) -

Terremoto moderato magnitudine 4.8 a 13 km di profondità

24 Sep 19:29 UTC: Primo a segnalare: VolcanoDiscovery dopo 2 minuti.
24 Sep 19:32: Ora utilizzando nuova fonte di dati: RaspberryShake
... [show all] ...
24 Sep 21:34: Profondità ricalcolata da 2.4 a 13.1 km (da 1.5 a 8.1 mi). Posizione dell'epicentro corretta di 7.1 km (4.4 mi) al E.

Update Sat, 24 Sep 2022, 19:39

Magnitude 4.8 earthquake strikes near Eureka, Humboldt County, California, USA

4.8 quake 24 Sep 11:27 am (GMT -8)

The United States Geological Survey reported a magnitude 4.8 quake in the United States near Eureka, Humboldt County, California, only 11 minutes ago. The earthquake hit in the morning on Saturday, September 24th, 2022, at 11:27 am local time at a very shallow depth of 1.5 miles. 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 Incorporated Research Institutions for Seismology (IRIS), which listed it as a magnitude 4.9 earthquake. Other agencies reporting the same quake include the citizen-seismograph network of RaspberryShake at magnitude 4.6, the citizen-seismograph network of RaspberryShake at magnitude 4.6, and the European-Mediterranean Seismological Centre (EMSC) at magnitude 4.8.
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 Ferndale (pop. 1,400) located 34 miles from the epicenter, Rio Dell (pop. 3,400) 39 miles away, Fortuna (pop. 12,000) 39 miles away, Humboldt Hill (pop. 3,400) 43 miles away, Pine Hills (pop. 3,100) 45 miles away, Eureka (pop. 27,000) 47 miles away, Bayside (pop. 17,100) 53 miles away, Arcata (pop. 17,800) 54 miles away, and McKinleyville (pop. 15,200) 57 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 ora	24 Sep 2022 19:27:39 UTC -
Ora locale all'epicentro	sabato, 24 set 2022 11:27 (GMT -8)
Status	Confermato
Magnitudine	4.8
Prof.	13.1 km
Epicentro latitudine / longitudine	40.31367°N / 124.7245°W (North Pacific Ocean, Contea di Kern, Stati Uniti)
Antipode	40.314°S / 55.276°E
Intensità di scuotimento	Scuotimento moderato vicino all'epicentro
Sentito	0 rapporti
Fonte dati primaria	USGS (United States Geological Survey)
Vulcano più vicino	Clear Lake (224 km / 139 mi)
Luoghi vicini	49 km SO da Ferndale (pop: 1,370) \| Mappa \| Sismi nelle vicinanze 57 km SO da Fortuna (Humboldt County) (pop: 12,000) \| Mappa \| Sismi nelle vicinanze 72 km SO da Eureka (Humboldt County) (pop: 27,000) \| Mappa \| Sismi nelle vicinanze 81 km SO da Bayside (Humboldt County) (pop: 17,100) \| Mappa \| Sismi nelle vicinanze 82 km SO da Arcata (Humboldt County) (pop: 17,800) \| Mappa \| Sismi nelle vicinanze 88 km SO da McKinleyville (Humboldt County) (pop: 15,200) \| Mappa \| Sismi nelle vicinanze 200 km O da Redding (pop: 91,600) \| Mappa \| Sismi nelle vicinanze 256 km NO da Windsor (Sonoma County) (pop: 27,500) \| Mappa \| Sismi nelle vicinanze
Meteo all'epicentro al momento del sismo	Clear Sky 16.7°C (62 F), humidity: 83%, wind: 6 m/s (12 kts) from N
Energia sismica rilasciata stimata	1 x 10¹² joules (278 MWh, equivalent to 239 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.	Ubicazione	Fonte
4.8	13 km	37km W of Petrolia, CA	USGS
4.8	36 km	OFFSHORE NORTHERN CALIFORNIA	EMSC
4.8	13 km	44km W of Petrolia, CA	RaspberryShake
4.9	10 km	Near Coast Of Northern Calif.	IRIS
4.7	10 km	Near Coast of Northern California	GFZ

Most recent quakes Top 20 past 24 hrs Quakes in the US California

Seismograms

Seismic station: Marconi Conference Center, Marshall, CA, USA (MCCM/BK network) | Distance from quake: 289 km / 179 mi | Show on map | Station Info

Seismic station Marconi Conference Center, Marshall, CA, 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

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

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