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Light mag. 3.8 earthquake - 28 mi west of El Sentro, Imperial County, California, USA, on Thursday, Dec 1, 2022 at 7:28 am (GMT -8) -

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Light mag. 3.8 earthquake - 28 mi west of El Sentro, Imperial County, California, USA, on Thursday, Dec 1, 2022 at 7:28 am (GMT -8) Light mag. 3.8 earthquake - 28 mi west of El Sentro, Imperial County, California, USA, on Thursday, Dec 1, 2022 at 7:28 am (GMT -8)

Light magnitude 3.8 earthquake at 11 km depth

1 Dec 15:30 UTC: First to report: USGS after 2 minutes.
1 Dec 15:35: Magnitude recalculated from 4.0 to 3.8.
1 Dec 16:15: Hypocenter depth recalculated from 11.2 to 10.5 km (from 7 to 6.5 mi). Epicenter location corrected by 0.8 km (0.5 mi) towards W.
Update Thu, 1 Dec 2022, 15:39

Small 3.8 quake hits near El Sentro, Imperial County, California, USA

3.8 quake 1 Dec 7:28 am (GMT -8)
3.8 quake 1 Dec 7:28 am (GMT -8)
Just 11 minutes ago, a 3.8-magnitude earthquake struck near El Sentro, Imperial County, California, USA. The tremor was recorded in the morning on Thursday, December 1st, 2022, at 7:28 am local time, at a shallow depth of 7 miles below the surface.
The event was filed by the United States Geological Survey, the first seismological agency to report it.
A second report was later issued by the citizen-seismograph network of RaspberryShake, which listed it as a magnitude 3.8 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 3.8.
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 Ocotillo (pop. 270) located 7 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Seeley (pop. 1,700) located 20 miles from the epicenter, Imperial (pop. 17,100) 27 miles away, El Sentro (pop. 44,000) 27 miles away, Santa Isabel (pop. 29,300) 30 miles away, Campo (pop. 2,700) 30 miles away, Heber (pop. 4,300) 30 miles away, Brawley (pop. 25,900) 31 miles away, and Calexico (pop. 40,100) 33 miles away.

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Earthquake details

Date & timeDec 1, 2022 15:28:29 UTC -
Local time at epicenterThursday, Dec 1, 2022 at 7:28 am (GMT -8)
StatusConfirmed
Magnitude3.8
Depth10.5 km
Epicenter latitude / longitude32.83617°N / 116.04033°W (Imperial, California, United States)
Antipode32.836°S / 63.96°E
Shaking intensityWeak shaking
Felt77 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoSalton Buttes (56 km / 35 mi)
Nearby towns and cities12 km (7 mi) NNW of Ocotillo (pop: 266) | Show on map | Quakes nearby
44 km (27 mi) W of Imperial (pop: 17,100) | Show on map | Quakes nearby
45 km (28 mi) W of El Sentro (pop: 44,000) | Show on map | Quakes nearby
49 km (30 mi) WNW of Santa Isabel (Baja California, Mexico) (pop: 29,300) | Show on map | Quakes nearby
50 km (31 mi) WSW of Brawley (Imperial County) (pop: 25,900) | Show on map | Quakes nearby
54 km (33 mi) WNW of Calexico (pop: 40,100) | Show on map | Quakes nearby
62 km (39 mi) ENE of Tecate (Baja California, Mexico) (pop: 64,800) | Show on map | Quakes nearby
806 km (501 mi) SE of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeScattered Clouds 8.2°C (47 F), humidity: 60%, wind: 3 m/s (6 kts) from WSW
Estimated seismic energy released3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 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.DepthLocationSource
3.810.5 km12km NNW of Ocotillo, CAUSGS
3.810 kmSOUTHERN CALIFORNIAEMSC
3.810.5 kmCalif.-Baja Calif. Border RegionRaspberryShake
4.210 kmCalif.-Baja Calif. Border RegionIRIS

Seismograms

Seismic station: In-Ko-Pah (IKP/CI network) | Distance from quake: 22 km / 13 mi | Show on map | Station Info
Seismic station In-Ko-Pah: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (78)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Mexicali (60.1 km ESE of epicenter) [Map] / Moderate shaking (MMI V) : I heard the crunch | 4 users found this interesting.  
Tijuana (82.7 km WSW of epicenter) [Map] / Light shaking (MMI IV) : Im sleeping when a rude shaking awake me, feels for around 2 seconds like if someone else pull you fast | 2 users found this interesting.  
Boulevard CA. (30 km SW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Very loud boom in the house and window shake | 3 users found this interesting.  
Colinas del Sol, Tijuana, Baja California (102.6 km WSW of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s : moved all my things and my bed ….. strong | 3 users found this interesting.  
Tijuana (85.8 km WSW of epicenter) [Map] / Weak shaking (MMI III) : Slight vibration, no trafic at all or Woofer in the area. Windows rattled. | 3 users found this interesting.  
Laguna woods / Weak shaking (MMI III) / rattling, vibrating / very short : Just a light shaking, couldn’t have been more than a 2.3, but I wondered where it was centered so called folks in LA who said they had not felt it. | One user found this interesting.  
Tijuana (84.4 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 1-2 s : Estaba acostado, y sentí el como se movió mi cama, puerta y ventana, fue lo único que alcancé a percibir y ver  
Tecate (60.9 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / 2-5 s : Estaba acostada y se sintió el movimiento telúrico, mi bebé estaba dormida y despertó con el movimiento  
San Diego Country Estates (near Ramona) California / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Bang and rumble | 2 users found this interesting.  
Tijuana / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Yes. The walls of the house trembled | 2 users found this interesting.  
Tijuana Baja California / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Light shaking with a cracking sound under the floor. | 2 users found this interesting.  
Tijuana / Light shaking (MMI IV) / single lateral shake / 2-5 s : As if someone had pushed me | 2 users found this interesting.  
Irvine California (149.9 km NW of epicenter) [Map] / Very weak shaking (MMI II) : Sitting in the couch | One user found this interesting.  
El Cajon, California (108.3 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 1-2 s : Laying down. Had been awake for 1/2 hour. El Cajon, California | One user found this interesting.  
PLAYAS DE ROSARITO (106.7 km WSW of epicenter) [Map] / Weak shaking (MMI III) : A lot of moving | One user found this interesting.  
Tijuana B.C (85.4 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Fuerte sacudida con vibración rapida | One user found this interesting.  
Tecate Baja California (53 km SSE of epicenter) [Map] / Weak shaking (MMI III) : Me desperto | One user found this interesting.  
near Rumorosa, Tecate, Baja California (24.2 km SSW of epicenter) [Map] / Weak shaking (MMI III) : Shook the whole RV | One user found this interesting.  
Mexicali, Baja California (66.1 km ESE of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 s : Low | One user found this interesting.  
Mexicali, Baja California / Light shaking (MMI IV) / single lateral shake / 2-5 s : It was a little shake in my bed. I was asleep, but yet it wake me up | One user found this interesting.  
Escondido / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Live top of a hill. Felt shaking, dishes and glasses rattling. | One user found this interesting.  
Mexicali / Light shaking (MMI IV) / single vertical bump / very short : Scared | One user found this interesting.  
San Diego (Bay Park) CA (2249.1 km S of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 5-10 s
Mexicali (62.4 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / 5-10 s
Rosarito (109.8 km WSW of epicenter) [Map] / Weak shaking (MMI III)
San diego (105.5 km W of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / very short
Laguna Niguel (172.4 km WNW of epicenter) [Map] / Weak shaking (MMI III)
Temecula, CA (128.4 km NW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / very short : Was woken up by light shaking and heard furniture but within 10 seconds it was gone  
Pine Valley (44.4 km W of epicenter) [Map] / Very weak shaking (MMI II) / vibration and rolling / 1-2 s
Chula Vista, Ca (94.7 km WSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Windows rattled, bed shook  
Tijuana, Baja California (92.4 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
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