Terremoto moderato mag. 4.0 - 48 km a nord ovest da El Sentro, Contea di Imperial County, Contea di Kern, Stati Uniti, mercoledì, 18 ago 2021 14:45 (GMT -7) -

Terremoto moderato mag. 4.0 - 48 km a nord ovest da El Sentro, Contea di Imperial County, Contea di Kern, Stati Uniti, mercoledì, 18 ago 2021 14:45 (GMT -7)

Terremoto moderato magnitudine 4.0 at 7 km depth

18 Aug 21:48 UTC: Primo a segnalare: EMSC dopo 3 minuti.
18 Aug 21:48: Ora utilizzando nuova fonte di dati: USGS
18 Aug 21:52: Magnitudine ricalcolata da 3.7 a 4.0.
18 Aug 22:11: Profondità ricalcolata da 8.8 a 7.1 km (da 5.5 a 4.4 mi).
Update Wed, 18 Aug 2021, 21:57
Magnitude 4.0 earthquake strikes near El Centro, Imperial County, California, USA
4.0 quake 18 Aug 2:45 pm (GMT -7)
4.0 quake 18 Aug 2:45 pm (GMT -7)
An earthquake of magnitude 4.0 occurred only 12 minutes ago 30 miles northwest of El Centro, California, United States, the United States Geological Survey reported.
The quake hit at a very shallow depth of 5.5 miles beneath the epicenter near El Centro, Imperial County, California, USA, early afternoon on Wednesday 18 August 2021 at 2:45 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 4.0 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 Salton City (pop. 3,800) located 16 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Brawley (pop. 25,900) located 26 miles from the epicenter, Calipatria (pop. 7,400) 26 miles away, Imperial (pop. 17,100) 27 miles away, El Centro (pop. 44,000) 30 miles away, Santa Isabel (pop. 29,300) 38 miles away, Calexico (pop. 40,100) 38 miles away, Coachella (pop. 44,600) 44 miles away, and La Quinta (pop. 40,500) 46 miles away.

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Earthquake data

Data & ora: 18 Aug 2021 21:45:14 UTC -
Ora locale a epicentro: mercoledì, 18 ago 2021 14:45 (GMT -7)
Magnitudine: 4
Prof.: 7.1 km
Epicentro latitudine / longitudine: 33.07333°N / 115.95983°W (Contea di Imperial, Contea di Kern, Stati Uniti)
Antipode: 33.073°S / 64.04°E
Vulcano più vicino: Salton Buttes (34 km / 21 mi)
Nearby towns and cities:
25 km S da Salton City (pop: 3,760) --> Vedi sismi vicini
41 km ONO da Brawley (Imperial County) (pop: 25,900) --> Vedi sismi vicini
42 km O da Calipatria (pop: 7,420) --> Vedi sismi vicini
44 km NO da Imperial (pop: 17,100) --> Vedi sismi vicini
48 km NO da El Sentro (pop: 44,000) --> Vedi sismi vicini
61 km NO da Santa Isabel (Baja California, Messico) (pop: 29,300) --> Vedi sismi vicini
61 km NO da Calexico (pop: 40,100) --> Vedi sismi vicini
70 km SSE da Coachella (pop: 44,600) --> Vedi sismi vicini
73 km SSE da La Quinta (pop: 40,500) --> Vedi sismi vicini
790 km SE da Sacramento (pop: 490,700) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Clear Sky 36.9°C (98 F), humidity: 30%, wind: 8 m/s (15 kts) from WSW
Fonte dati primaria: USGS (United States Geological Survey)
Stima dell'energia sismica liberata: 6.3 x 1010 joules (17.5 MWh, equivalent to 15.1 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.
4.07.1 km18km ESE of Ocotillo Wells, CAUSGS

User reports for this quake (10)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
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Addie hunt Palm desert California (79.8 km NNW of epicenter) [Map] / not felt / 2-5 s : Watched my Dr pepper in a glass shaking | 4 users found this interesting. (reported through our app)  
653 Baywood Street, Imperial, CA. / Light shaking (MMI IV) / both vertical and horizontal swinging / 5-10 s : I felt a swaying motion. | 3 users found this interesting.  
Hesperia (191.2 km NW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : I little jolt | 2 users found this interesting. (reported through our app)  
Pahrump NV / not felt : Don't think I felt it cats knock over something so I don't think it was from the quake. | One user found this interesting.  
Canoga Park, Los Angeles, California (275.1 km WNW of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Chatsworth, Los Angeles, California (275.5 km WNW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Las Vegas, nv. 89148 (340.1 km N of epicenter) [Map] / Very weak shaking (MMI II) / 2-5 s (reported through our app)
Palm Springs, ca (98.5 km NNW of epicenter) [Map] / not felt (reported through our app)
Tecate / Light shaking (MMI IV) / single lateral shake / 2-5 s
Westmorland, CA (31.9 km E of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging (reported through our app)
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