Terremoto moderado mag. 3.8 - 27 miles NNW of Santa Rosa, Sonoma County, California, USA, jueves, 25 feb. 2021 -

Terremoto moderado mag. 3.8 - 27 miles NNW of Santa Rosa, Sonoma County, California, USA, jueves, 25 feb. 2021

Terremoto moderado magnitud 3.8 at 3 km depth

25 Feb 19:34 UTC: Primero en informar: USGS después de 4 minutos.
25 Feb 20:42: Magnitud recalculada de 3.5 a 3.3. Profundidad recalculada de 1.9 a 2.6 km (de 1.2 a 1.6 mi).
26 Feb 16:34: Magnitud recalculada de 3.3 a 3.8.
Update Thu, 25 Feb 2021, 19:39
Magnitude 3.5 earthquake strikes near Santa Rosa, Sonoma County, California, USA
3.5 quake 25 Feb 11:30 am (GMT -8)
3.5 quake 25 Feb 11:30 am (GMT -8)
The United States Geological Survey reported a magnitude 3.5 quake in the United States near Santa Rosa, Sonoma County, California, only 9 minutes ago. The earthquake hit in the morning on Thursday 25 February 2021 at 11:30 am local time at a very shallow depth of 1.2 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 European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 3.5 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 Cobb (pop. 1,800) located 5 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Cloverdale (pop. 8,800) located 11 miles from the epicenter, Clearlake (pop. 15,200) 14 miles away, Windsor (pop. 27,500) 19 miles away, Santa Rosa (pop. 175,000) 27 miles away, Ukiah (pop. 15,900) 31 miles away, and Rohnert Park (pop. 42,400) 34 miles away. In Petaluma (pop. 60,400, 42 miles away), and Napa (pop. 80,400, 46 miles away), the quake was probably not felt.
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Earthquake data:

Fecha & hora: 25 Feb 2021 19:30:19 UTC -
Hora local al epicentro: jueves, 25 feb 2021 11:30 (GMT -8)
Magnitud: 3.8
Profundidad: 2.6 km
Epicentro latitud / longitud: 38.81783°N / 122.82067°W (Condado de Sonoma, Condado de Kern, Estados Unidos)
Volcán mas cercano: Clear Lake (17 km / 11 mi)
Nearby towns and cities:
8 km al O de Cobb (pop: 1,780) --> ¡Vea sismos cercanos!
17 km al E de Cloverdale (Sonoma County) (pop: 8,810) --> ¡Vea sismos cercanos!
23 km al SO de Clearlake (Lake County) (pop: 15,200) --> ¡Vea sismos cercanos!
23 km al N de Healdsburg (Sonoma County) (pop: 11,700) --> ¡Vea sismos cercanos!
23 km al N de Russian River (pop: 11,700) --> ¡Vea sismos cercanos!
30 km al N de Windsor (Sonoma County) (pop: 27,500) --> ¡Vea sismos cercanos!
43 km al NNO de Santa Rosa (pop: 175,000) --> ¡Vea sismos cercanos!
50 km al SE de Ukiah (pop: 15,900) --> ¡Vea sismos cercanos!
54 km al NNO de Rohnert Park (pop: 42,400) --> ¡Vea sismos cercanos!
118 km al ONO de Sacramento (pop: 490,700) --> ¡Vea sismos cercanos!
Weather at epicenter at time of quake:
Overcast Clouds 15.9°C (61 F), humidity: 28%, wind: 2 m/s (4 kts) from NW
Fuente primaria de datos: USGS (United States Geological Survey)
Energía liberada estimada: 3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 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.
MagnitudProfundidadUbicaciónFuente
3.82.6 km7km NW of The Geysers, CA, USAUSGS
3.33 kmNORTHERN CALIFORNIA, USAEMSC

User reports for this quake (6)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Calistoga, CA / Weak shaking (MMI III) : Quick rattle | 2 users found this interesting.  
21.9 km SSW of epicenter [Map] / Weak shaking (MMI III)
Healdsburg (22.1 km S of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump / 1-2 s
22.1 km S of epicenter [Map] / Very weak shaking (MMI II) / single lateral shake / very short : Felt more like a roll with a vertical bump followed by a very short shake (reported through our app)  
Pacifica, CA / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Felt it and my ceiling fan chandelier was swaying  
Town of Sebastopol California just outside of epic / not felt : No ground motion noticed downtown  
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