Terremoto moderato mag. 4.7 - 58 km a ovest da Paso Robles, Contea di San Luis Obispo County, Contea di Kern, Stati Uniti, lunedì, 25 ott 2021 16:42 (GMT -7) -

Terremoto moderato mag. 4.7 - 58 km a ovest da Paso Robles, Contea di San Luis Obispo County, Contea di Kern, Stati Uniti, lunedì, 25 ott 2021 16:42 (GMT -7)

Terremoto moderato magnitudine 4.7 at 8 km depth

25 Oct 23:46 UTC: Primo a segnalare: USGS dopo 4 minuti.
25 Oct 23:46: Magnitudine ricalcolata da 4.9 a 4.8. Profondità ricalcolata da 9.0 a 5.1 km (da 5.6 a 3.2 mi). Posizione dell'epicentro corretta di 4.1 km (2.6 mi) al SO.
25 Oct 23:48: Magnitudine ricalcolata da 4.8 a 4.7.
26 Oct 01:42: Profondità ricalcolata da 5.1 a 7.8 km (da 3.2 a 4.8 mi). Posizione dell'epicentro corretta di 0.5 km (0.3 mi) al E.
Update Mon, 25 Oct 2021, 23:54
Magnitude 4.7 earthquake strikes near Paso Robles, San Luis Obispo County, California, USA
4.7 quake 25 Oct 4:42 pm (GMT -7)
4.7 quake 25 Oct 4:42 pm (GMT -7)
An earthquake of magnitude 4.7 occurred in the afternoon on Monday, October 25th, 2021, at 4:42 pm local time near Paso Robles, San Luis Obispo County, California, USA, as reported by the United States Geological Survey.
According to preliminary data, the quake was located at a very shallow depth of 3.2 miles. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. 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 4.7 earthquake as well.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In San Simeon (pop. 460) located 11 miles from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Paso Robles (pop. 27,200) located 36 miles from the epicenter, Greenfield (pop. 17,200) 38 miles away, Atascadero (pop. 29,800) 41 miles away, Soledad (pop. 25,000) 45 miles away, and San Luis Obispo (pop. 47,300) 50 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Arroyo Grande (pop. 18,100) located 61 miles from the epicenter.
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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Earthquake data

Data & ora: 25 Oct 2021 23:42:35 UTC -
Ora locale a epicentro: lunedì, 25 ott 2021 16:42 (GMT -7)
Magnitudine: 4.7
Prof.: 7.8 km
Epicentro latitudine / longitudine: 35.77583°N / 121.30433°W (Contea di San Luis Obispo, Contea di Kern, Stati Uniti)
Antipode: 35.776°S / 58.696°E
Nearby towns and cities:
18 km NO da San Simeon (pop: 462) --> Vedi sismi vicini
58 km ONO da Paso Robles (San Luis Obispo County) (pop: 27,200) --> Vedi sismi vicini
61 km S da Greenfield (pop: 17,200) --> Vedi sismi vicini
66 km ONO da Atascadero (San Luis Obispo County) (pop: 29,800) --> Vedi sismi vicini
72 km S da Soledad (pop: 25,000) --> Vedi sismi vicini
80 km NO da San Luis Obispo (pop: 47,300) --> Vedi sismi vicini
94 km OSO da Coalinga (Fresno County) (pop: 16,600) --> Vedi sismi vicini
98 km NO da Arroyo Grande (pop: 18,100) --> Vedi sismi vicini
121 km NO da Santa Maria (pop: 105,100) --> Vedi sismi vicini
313 km S da Sacramento (pop: 490,700) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Clear Sky 14.6°C (58 F), humidity: 72%, wind: 5 m/s (9 kts) from WNW
Fonte dati primaria: USGS (United States Geological Survey)
Stima dell'energia sismica liberata: 7.1 x 1011 joules (197 MWh, equivalent to 169 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
4.77.8 km18km NW of San Simeon, CAUSGS
4.633 kmCENTRAL CALIFORNIAEMSC
4.810 kmCentral CaliforniaGFZ

User reports for this quake (163)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Grover Beach, California (95.4 km SE of epicenter) [Map] / Light shaking (MMI IV) / simple rolling (tilting sideways along one direction) / 1-2 s : Sitting on couch felt like my living room was rolling NE and back around. Creaking sounds in building. Heard sirens about 10 later. May not be related. | 2 users found this interesting.  
Paso Robles / Weak shaking (MMI III) / rattling, vibrating / 5-10 s : I was putting my shoes on to go for a walk and had to hold onto something-word windows rattled, hanging lamp was swaying | 2 users found this interesting.  
Paso Robles / Light shaking (MMI IV) / horizontal (sideways) swinging : Light shaking while sitting on my office chair. This felt stronger than the other more recent quakes in the area. | 2 users found this interesting.  
2161 Empire Grade, Ca (153.2 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 30-60 s : 2161 Empire Grade, Santa Cruz, CA. Watching a movie in my room. I felt shaking and my plants were shaking. | One user found this interesting.  
2161 Empire Grade, Ca (153.2 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 30-60 s : 2161 Empire Grade, Santa Cruz, CA. Watching a movie in my room. I felt shaking and my plants were shaking. | One user found this interesting.  
Atascadero, ca / Weak shaking (MMI III) / horizontal (sideways) swinging / 1-2 s : Mild shaking not very noticable | 3 users found this interesting.  
PASO ROBLES / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Felt like something bumped the bed from one direction and then a moment later from the other direction. That was it. Looked for swinging items but saw nothing. Other person in house was vacuuming and didn't feel anything. | One user found this interesting.  
San Luis Obispo / Weak shaking (MMI III) / complex motion difficult to describe / 1-2 s : Felt a vibration on the surface of my desk while being still and saw water moving in a cup near me. About 2 seconds long. | One user found this interesting.  
San Luis Obispo (78.5 km SE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : Sitting still on my couch, in my 3rd floor apartment. Small couch slid off edge of rug, hanging plants & lights swinging, pets spooked by movement  
93428 / Very weak shaking (MMI II) / single lateral shake / 1-2 s : felt upstairs but not downstairs 2-story residence | 2 users found this interesting.  
Arroyo Grande ca (101.3 km SE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s : Sitting on couch. Cat allerted also. | One user found this interesting.  
San Luis Obispo (79.3 km SE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : I was in my room sitting on my bed and felt like my bed was moving back and forth. | One user found this interesting.  
Carmel, CA (101.7 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : House creaked and cracked | One user found this interesting.  
King city California (47.3 km NNE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / very short : House shook livery shortly | One user found this interesting.  
380 Lark dr pasorobles ca 93446 (61.6 km ESE of epicenter) [Map] / Weak shaking (MMI III) / vibration and rolling / 5-10 s : Sitting in house good 5 to 10 seconds | One user found this interesting.  
San Luis Obispo, California (81.4 km SE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Felt in bes | One user found this interesting.  
Arroyo Grande (98.7 km SE of epicenter) [Map] / Weak shaking (MMI III) : Computer monitors shaking | One user found this interesting.  
Lockwood ca (28.8 km NE of epicenter) [Map] / Weak shaking (MMI III) / both vertical and horizontal swinging / 1-2 s : Roller | One user found this interesting.  
Monterey, CA (95.2 km NNW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s : sitting in my car in driveway | One user found this interesting.  
Marina, california (108.6 km NNW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Sitting in my office chair on second floor of my house getting a vibration | One user found this interesting.  
Atascadero,ca (73.4 km E of epicenter) [Map] / Very weak shaking (MMI II) : Weak shaking. Windows rattle. Lasting a few seconds | One user found this interesting.  
Santa Cruz California (147.8 km NNW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s : Sitting on couch felt swaying and heard settling from ceiling | One user found this interesting.  
Paso Robles (57.9 km ESE of epicenter) [Map] / Weak shaking (MMI III) / 2-5 s : Watching tv and saw and felt weak shaking | One user found this interesting.  
King City, Monterey, California (51.4 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 5-10 s : Felt my bed moving | One user found this interesting.  
Paso Robles / Light shaking (MMI IV) / horizontal (sideways) swinging : Light shaking while sitting on my office chair. This felt stronger than the other more recent quakes in the area.  
Standing in my drive way getting something out of / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Weak shaking was reaching for something in the back of the truck and felt it stopped for a sec to see it was going to happen thought to my self was that an earth quick and then just went back to doing what I was doing (reported through our app)  
Sherwood Drive, Cambria CA / Very weak shaking (MMI II) / single lateral shake / 1-2 s : House made creaking sound as if high gust wind occurred. Which was in forecast due to passing storm. Very weak shake.  
Paso Robles / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : I felt the whole office move. I was sitting down. My co worker didn't feel it. The qhole building swayed  
Oceano, CA / Very weak shaking (MMI II) / horizontal (sideways) swinging / very short : Felt like a truck was rolling by us in the RV | One user found this interesting.  
hills, 2 miles east of Cambria / Moderate shaking (MMI V) / horizontal (sideways) swinging / 5-10 s : light shaking long enough that I thought I'd better get out. House creaking. | One user found this interesting.  
Templeton / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Rumbling | One user found this interesting.  
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