Light mag. 4.1 earthquake - 6.9 mi north of Concord, Contra Costa County, California, USA, on Thursday, Jun 2, 2022 at 5:07 am (GMT -7) -

Light mag. 4.1 earthquake - 6.9 mi north of Concord, Contra Costa County, California, USA, on Thursday, Jun 2, 2022 at 5:07 am (GMT -7) Light mag. 4.1 earthquake - 6.9 mi north of Concord, Contra Costa County, California, USA, on Thursday, Jun 2, 2022 at 5:07 am (GMT -7)

Light magnitude 4.1 earthquake at 18 km depth

2 Jun 12:09 UTC: First to report: VolcanoDiscovery after 3 minutes.
2 Jun 12:10: Now using data updates from USGS
2 Jun 12:11: Hypocenter depth recalculated from 1.0 to 19.7 km (from 0.6 to 12.2 mi). Epicenter location corrected by 8 km (5 mi) towards SW.
2 Jun 15:00: Hypocenter depth recalculated from 19.7 to 18.4 km (from 12.2 to 11.4 mi). Epicenter location corrected by 2.6 km (1.6 mi) towards W.
Update Thu, 2 Jun 2022, 12:15
Moderate magnitude 4.1 earthquake 8 miles northeast of Concord, California, United States
4.1 quake 2 Jun 5:07 am (GMT -7)
4.1 quake 2 Jun 5:07 am (GMT -7)
The United States Geological Survey reported a magnitude 4.1 quake in the United States near Concord, Contra Costa County, California, only 8 minutes ago. The earthquake hit early morning on Thursday, June 2nd, 2022, at 5:07 am local time at a shallow depth of 12 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 citizen-seismograph network of RaspberryShake, which listed it as a magnitude 4.1 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.1.
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 Bay Point (pop. 21,500) located 4 miles from the epicenter, New York of the Pacific (pop. 69,400) 6 miles away, Concord (pop. 128,700) 8 miles away, Martinez (pop. 38,100) 9 miles away, Antioch (pop. 110,500) 11 miles away, Fairfield (pop. 113,000) 12 miles away, Walnut Creek (pop. 68,900) 13 miles away, and Vallejo (pop. 121,300) 15 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include San Francisco (pop. 864,800) located 32 miles from the epicenter, and Sacramento (pop. 490,700) 44 miles away.

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Earthquake data

Earthquake details

Date & timeJun 2, 2022 12:07:22 UTC -
Local time at epicenterThursday, Jun 2, 2022 at 5:07 am (GMT -7)
StatusConfirmed
Magnitude4.1
Depth18.4 km
Epicenter latitude / longitude38.0765°N / 122.00767°W (California, United States)
Antipode38.077°S / 57.992°E
Shaking intensityWeak shaking
Felt853 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoClear Lake (119 km / 74 mi)
Nearby towns and cities7 km (4 mi) NW of Bay Point (Contra Costa County) (pop: 21,500) | Show on map | Quakes nearby
11 km (7 mi) N of Concord (pop: 128,700) | Show on map | Quakes nearby
12 km (7 mi) WNW of New York of the Pacific (pop: 69,400) | Show on map | Quakes nearby
19 km (12 mi) WNW of Antioch (pop: 110,500) | Show on map | Quakes nearby
19 km (12 mi) S of Fairfield (pop: 113,000) | Show on map | Quakes nearby
22 km (14 mi) E of Vallejo (pop: 121,300) | Show on map | Quakes nearby
49 km (31 mi) NE of San Francisco (pop: 864,800) | Show on map | Quakes nearby
72 km (45 mi) SW of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 15.6°C (60 F), humidity: 58%, wind: 3 m/s (6 kts) from SW
Estimated seismic energy released8.9 x 1010 joules (24.8 megawatt hours, equivalent to 21.3 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
4.118 km7km NW of Bay Point, CAUSGS
4.110 kmNORTHERN CALIFORNIAEMSC
4.118 kmNorthern CaliforniaRaspberryShake

User reports for this quake (864)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Concord, Contra Costa, California (6.1 km SSW of epicenter) [Map] / Moderate shaking (MMI V) / vibration and rolling : Reading in bed. Loud crashing like noise, bed shaking from side to side felt like bed moved heavily in one direction near end, window blinds rattled, but nothing seemed disturbed afterwards. Shaking and rolling more than light, but less than moderate. | 4 users found this interesting.  
Travis AFB (21.4 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 10-15 s : Was legit almost a sleep and the whole building started shaking. Called and text a couple people and it was felt all across Fairfield,Vacaville,and Travis AFB. | 4 users found this interesting.  
Millbrae, ca (64.1 km SSW of epicenter) [Map] / Light shaking (MMI IV) / very short : Sitting in upper floor of house on top of a hill overlooking SFO. House shook 3-4 times, felt the floor move like it was bumping up and down, house creaked audibly a few times. Much louder and more movement than a large truck passing outside. | 3 users found this interesting.  
Fairfield (60.1 km ENE of epicenter) [Map] / Very weak shaking (MMI II) / 5-10 s : I was in my room, half-asleep at this time of day when the shaking occurred. Did not recognize it as an earthquake at first, but I could feel it as my mattress and the ground shook. | 2 users found this interesting.  
Vacaville ca (28.9 km N of epicenter) [Map] / Weak shaking (MMI III) / both vertical and horizontal swinging / 5-10 s : Just happened to wake up and felt a little bit of a shake and thought it was a washer then I felt a good vertical bump then horizontal swinging for a few seconds things in the house made noise and the dogs were barking | 2 users found this interesting.  
Fairfield, California 94533 (20.8 km N of epicenter) [Map] / Light shaking (MMI IV) / 1-2 s : Like the room shifted one way and then back to normal as if someone bumped into you but you held your ground and came back to your normal position. | 2 users found this interesting.  
San Mateo, CA (65.8 km SSW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Sitting in a lounge chair, about to go to bed! Vase started rattling, and my body felt shaking! ???????? | 2 users found this interesting.  
Suisun City Ca (18.8 km N of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s : A hard jolt. There was no shaking it was a jolt | 3 users found this interesting.  
San Mateo CA (61.7 km SSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s : o wuaw estubo fuerte, yo estaba dormida pero la grande sacudida me desperto, y tambien tengo pajaritos y creo se calleron ya que duermen congados o en columpios y asian un poco de ruido. | One user found this interesting.  
Napa (37.9 km NW of epicenter) [Map] / Very weak shaking (MMI II) / 1-2 s : I was awake laying in bed on the second floor of my home, and felt the bed make a brief shaking motion. | One user found this interesting.  
  • I felt the same as the above comment.
  • I felt the same as the above comment.
Antioch ca (21.1 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 1-2 s : I was asleep and heard a deep rumbling sound and heard the furniture in my room made loud sounds. A noticeable horizontal jerking motion could be felt as well. | One user found this interesting.  
Concord CA (8.1 km SSW of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 5-10 s : It just started out of nowhere, with the strongest shaking in the beginning and dying off, at first it felt like when a heavy truck passes by but then it felt like the ground was rolling back and forth | One user found this interesting.  
Bay Point , (6 km SE of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 1-2 s : In be# and it felt like someone pulled my bed from the footboard area 2x's. All the stuff on shelves rattled and the house creaked | One user found this interesting.  
Antioch (24.7 km ESE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : woke me up! i was sleeping and i started hearing my trinkets on my shelf rattle. it was a lot bigger than the last one i felt months Ago | One user found this interesting.  
Concord (14.1 km S of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating : I was awake, but still in bed. That earthquakes rolling seemed longer and louder that other earthquakes in the past few years. | One user found this interesting.  
Vacaville (29 km N of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 10-15 s : I just finished feeding my newborn, was laying down on my phone, heard vibration coming from the apartment upstairs and my bask started rattling w my bed. | One user found this interesting.  
Davis (57.1 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : Laying in bed and noticed shaking for a second. It stopped briefly and felt it again for a second or two | One user found this interesting.  
Redwood City (69.1 km SSW of epicenter) [Map] / Light shaking (MMI IV) : Moderate | 2 users found this interesting.  
Tiburon,CA (60.4 km W of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / very short : Like a brief bump on the house,like when your car is lightly rear ended,plus the house creaked | 2 users found this interesting.  
Danville (31.8 km S of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s : Very quick shake | 2 users found this interesting.  
Belmont (65.6 km SSW of epicenter) [Map] / Weak shaking (MMI III) : Like passing of a quick vehicle. Windows rattled | 2 users found this interesting.  
Pittsburg, ca (8.5 km SE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s : Laying in bed and everything sounded creeky | 2 users found this interesting.  
Sunnyvale (77.4 km S of epicenter) [Map] / Very weak shaking (MMI II) : Lying in bed, felt like the whole building moved because of a giant gust of wind | 2 users found this interesting.  
Fairfield, CA / Light shaking (MMI IV) / rattling, vibrating / 10-15 s : Felt like someone over loaded the laundry and it was rattling the whole 2nd floor. Then I thought maybe it was extremely windy outside, so I opened the windows but couldn’t see anything blowing like crazy. Then I thought maybe it was a heavy set person | One user found this interesting.  
Sax ca 95831 / Light shaking (MMI IV) / vibration and rolling / 10-15 s : In bed on second story home. Light with dangling crstals bumped into each other, ringing. Bed shook. Fekt like it almost stopped but continued again. | One user found this interesting.  
Pittsburg, Ca / Light shaking (MMI IV) / 2-5 s : We were in bed asleep Husband could hear it coming, bed shook real good. All our dogs started barking. | One user found this interesting. (reported through our app)  
Suisun city / Light shaking (MMI IV) / rattling, vibrating / very short : It almost feels like a percussion boom… like an explosion. The window that was open a few inches near my bed rattled. | One user found this interesting.  
Concord, CA / Light shaking (MMI IV) / single vertical bump / very short : Woke me up. Thought someone bumped hard into building and then my birds panicked so had to comfort them | One user found this interesting.  
68.5 km SSW of epicenter [Map] / Light shaking (MMI IV) / both vertical and horizontal swinging / 15-20 s : Light shaking then 10-ish seconds later a larger strong jolt that rattle the furniture for 4-5 second  
antioch ca (24 km ESE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 5-10 s : i felt the bed shaking and my headboard was rattling on the wall. I also heard my door rattling which sounded like someone knocking.  
Redwood City (68.5 km SSW of epicenter) [Map] / Light shaking (MMI IV) : was in bed trying to fall asleep when the room started shaking/vibrating. earthquake started and ended in a few seconds.  
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