Sismo debile mag. 2.8 - North Pacific Ocean, 66 km a sud ovest da Eureka, Contea di Humboldt County, Contea di Kern, Stati Uniti, lunedí, 05 aprile 2021 -

Sismo debile mag. 2.8 - North Pacific Ocean, 66 km a sud ovest da Eureka, Contea di Humboldt County, Contea di Kern, Stati Uniti, lunedí, 05 aprile 2021

Sismo debile magnitudine 2.8 at 19 km depth

5 Apr 20:30 UTC: Primo a segnalare: USGS dopo 3 minuti.
5 Apr 22:54: Magnitudine ricalcolata da 3.5 a 2.8. Profondità ricalcolata da 17.2 a 19.1 km (da 10.7 a 11.9 mi). Posizione dell'epicentro corretta di 2.8 km (1.7 mi) al ENE.
Update Mon, 5 Apr 2021, 20:36
Small magnitude 3.5 earthquake 42 miles southwest of Eureka, California, United States
3.5 quake 5 Apr 1:27 pm (GMT -7)
3.5 quake 5 Apr 1:27 pm (GMT -7)
The United States Geological Survey reported a magnitude 3.5 quake in the United States near Eureka, Humboldt County, California, only 9 minutes ago. The earthquake hit around noon on Monday 5 April 2021 at 1:27 pm local time at a shallow depth of 10.7 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.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 3.5 as well.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ferndale (pop. 1,400) located 27 miles from the epicenter, and Rio Dell (pop. 3,400) 31 miles away. In Fortuna (pop. 12,000, 32 miles away), Humboldt Hill (pop. 3,400, 37 miles away), Eureka (pop. 27,000, 42 miles away), Bayside (pop. 17,100, 48 miles away), Arcata (pop. 17,800, 49 miles away), and McKinleyville (pop. 15,200, 53 miles away), the quake was probably not felt.
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Earthquake data:

Data & ora: 5 Apr 2021 20:27:22 UTC -
Ora locale a epicentro: Monday, 5 Apr 2021 13:27 (GMT -7)
Magnitudine: 2.8
Profondità: 19.1 km
Epicentro latitudine / longitudine: 40.31417°N / 124.60617°W (North Pacific Ocean, Contea di Kern, Stati Uniti)
Vulcano più vicino: Clear Lake (218 km / 135 mi)
Nearby towns and cities:
41 km SO da Ferndale (pop: 1,370) --> Vedi sismi vicini
47 km OSO da Rio Dell (pop: 3,390) --> Vedi sismi vicini
49 km SO da Fortuna (Humboldt County) (pop: 12,000) --> Vedi sismi vicini
66 km SO da Eureka (Humboldt County) (pop: 27,000) --> Vedi sismi vicini
70 km ONO da Redway (pop: 1,230) --> Vedi sismi vicini
75 km SO da Bayside (Humboldt County) (pop: 17,100) --> Vedi sismi vicini
76 km SO da Arcata (Humboldt County) (pop: 17,800) --> Vedi sismi vicini
82 km SSO da McKinleyville (Humboldt County) (pop: 15,200) --> Vedi sismi vicini
190 km O da Redding (pop: 91,600) --> Vedi sismi vicini
250 km NO da Windsor (Sonoma County) (pop: 27,500) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Scattered Clouds 13.3°C (56 F), humidity: 76%, wind: 6 m/s (11 kts) from WNW
Fonte dati primaria: USGS (United States Geological Survey)
Stima dell'energia sismica liberata: 1 x 109 joules (278 kilowatt hours, equivalent to 0.239 tons of TNT) More info
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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.
2.819 km27km W of Petrolia, CA, USAUSGS

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
At magnitude 2.8, this quake might have been felt very close to the epicenter and under calm conditions.
65.2 km NE of epicenter [Map] / not felt (reported through our app)
Salem, OR (525.9 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 1-2 s
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