Terremoto leve mag. 3.0 - 18 miles SSE of Ukiah, Mendocino County, California, USA, viernes, 15 oct 2021 12:54 (GMT -7) -

Terremoto leve mag. 3.0 - 18 miles SSE of Ukiah, Mendocino County, California, USA, viernes, 15 oct 2021 12:54 (GMT -7)

Terremoto leve magnitud 3.0 at 4 km depth

15 Oct 19:56 UTC: Primero en informar: USGS después de 2 minutos.
16 Oct 01:48: Magnitud recalculada de 3.4 a 3.0. Profundidad recalculada de 0.3 a 4.4 km (de 0.2 a 2.7 mi).
Update Fri, 15 Oct 2021, 20:00
Small earthquake of magnitude 3.4 just reported 18 miles southeast of Ukiah, California, United States
3.4 quake 15 Oct 12:54 pm (GMT -7)
3.4 quake 15 Oct 12:54 pm (GMT -7)
An earthquake of magnitude 3.4 occurred only 6 minutes ago 18 miles southeast of Ukiah, California, United States, the United States Geological Survey reported.
The quake hit at a very shallow depth of 0.2 miles beneath the epicenter near Ukiah, Mendocino County, California, USA, around noon on Friday, October 15th, 2021, at 12:54 pm 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 European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.4 earthquake as well.
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 Hopland (pop. 760) located 5 miles from the epicenter, and Cloverdale (pop. 8,800) 9 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Kelseyville (pop. 3,400) located 11 miles from the epicenter, Ukiah (pop. 15,900) 18 miles away, Clearlake (pop. 15,200) 22 miles away, Russian River (pop. 11,700) 24 miles away, Russian River (pop. 11,700) 24 miles away, and Windsor (pop. 27,500) 29 miles away. In Santa Rosa (pop. 175,000, 38 miles away), the quake was probably not felt.

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Earthquake data

Fecha & hora: 15 Oct 2021 19:54:07 UTC -
Hora local al epicentro: viernes, 15 oct 2021 12:54 (GMT -7)
Magnitud: 3
Prof.: 4.4 km
Epicentro latitud / longitud: 38.92933°N / 123.03517°W (Condado de Mendocino, California, Estados Unidos)
Antipode: 38.929°S / 56.965°E
Volcán mas cercano: Clear Lake (24 km / 15 mi)
Nearby towns and cities:
9 km al SE de Hopland (pop: 756) --> ¡Vea sismos cercanos!
14 km al N de Cloverdale (Sonoma County) (pop: 8,810) --> ¡Vea sismos cercanos!
16 km al SO de Lakeport (pop: 4,810) --> ¡Vea sismos cercanos!
29 km al SSE de Ukiah (pop: 15,900) --> ¡Vea sismos cercanos!
36 km al O de Clearlake (Lake County) (pop: 15,200) --> ¡Vea sismos cercanos!
38 km al NNO de Russian River (Sonoma County) (pop: 11,700) --> ¡Vea sismos cercanos!
38 km al NNO de Russian River (pop: 11,700) --> ¡Vea sismos cercanos!
47 km al NNO de Windsor (Sonoma County) (pop: 27,500) --> ¡Vea sismos cercanos!
61 km al NNO de Santa Rosa (pop: 175,000) --> ¡Vea sismos cercanos!
139 km al ONO de Sacramento (pop: 490,700) --> ¡Vea sismos cercanos!
Weather at epicenter at time of quake:
Clear Sky 25.8°C (78 F), humidity: 25%, wind: 1 m/s (3 kts) from SSW
Fuente primaria de datos: USGS (United States Geological Survey)
Energía liberada estimada: 2 x 109 joules (554 kWh, equivalente a 0.477 toneladas de 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.
3.04.4 km14km N of Cloverdale, CAUSGS

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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North Lakeport, Lake, California (15.7 km NE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 1-2 s : in bed  
Lakeport / Weak shaking (MMI III) / complex motion difficult to describe / 2-5 s : Moderate jolt. One major and several minor lasting a few seconds  
Lakeport / Weak shaking (MMI III) / 1-2 s : A little shaky  
spring valley / Weak shaking (MMI III) / vibration and rolling / 1-2 s : shaking  
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