Event status: unconfirmed [?]

Unconfirmed earthquake or seismic-like event: 5.6 mi southeast of Antioch, Contra Costa Comitatus County, California, USA, 30 Jun 1:50 am (GMT -7) -

Unconfirmed earthquake or seismic-like event: 5.6 mi southeast of Antioch, Contra Costa Comitatus County, California, USA, 30 Jun 1:50 am (GMT -7)
30 Jun 08:53 UTC: First to report: VolcanoDiscovery after 3 minutes.
Date & time: Jun 30, 2021 08:50:14 UTC -
Local time at epicenter: 30 Jun 1:50 am (GMT -7)
Magnitude: 3.4?
Depth: 10.0 km
Epicenter latitude / longitude: 37.93249°N / 121.76041°W (Contra Costa County, California, United States)
Antipode: 37.932°S / 58.24°E
Nearest volcano: Clear Lake (153 km / 95 mi)
Nearby towns and cities:
6 km (4 mi) W of Brentwood (pop: 59,000) --> See nearby quakes!
8 km (5 mi) SSW of Oakley (pop: 39,800) --> See nearby quakes!
9 km (6 mi) SSE of Antioch (pop: 110,500) --> See nearby quakes!
15 km (9 mi) SE of New York of the Pacific (pop: 69,400) --> See nearby quakes!
24 km (15 mi) E of Concord (pop: 128,700) --> See nearby quakes!
26 km (16 mi) NE of San Ramon (pop: 76,100) --> See nearby quakes!
27 km (17 mi) E of Walnut Creek (pop: 68,900) --> See nearby quakes!
28 km (17 mi) N of Livermore (pop: 88,100) --> See nearby quakes!
41 km (25 mi) NE of Hayward (pop: 158,300) --> See nearby quakes!
76 km (47 mi) SSW of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 16.9°C (62 F), humidity: 64%, wind: 13 m/s (26 kts) from SW
Primary data source: VolcanoDiscovery
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User reports for this quake (26)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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near Galt, Sacramento, California (57.7 km ENE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 20-30 s : Laying in bed, almost asleep at about 2:15am. Felt minor shaking, though it was just the dog scravking but then it wemt on for serveral second afn i realized the dog wasnt in the room. Then jumped online to see if i was crazy or if a quale had happened. | 3 users found this interesting.  
San Francisco, California (60.9 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : vibrating and shaking | One user found this interesting.  
San Ramon / Weak shaking (MMI III) / single vertical bump / very short : Quick, and light shake. | One user found this interesting.  
San Ramon / Very weak shaking (MMI II) / single vertical bump / very short : Felt single jolt | One user found this interesting.  
Pleasanton, Alameda, California (30.4 km SSW of epicenter) [Map] / Weak shaking (MMI III) / single vertical bump
Oakland / not felt
Dublin / Weak shaking (MMI III) / single vertical bump / 1-2 s : Felt a jolt. My (very light) clothes hamper fell over on its side.  
San ramon / Light shaking (MMI IV) / 2-5 s
West End, Oakland, California (43.5 km WSW of epicenter) [Map] / not felt : N/A. I didn't feel it even though I was awake by 8:10 a.m. (reported through our app)  
San Ramon / Very weak shaking (MMI II) / rattling, vibrating / very short : Very short 2 sec of house creaking & light tremor.  
94582 / Light shaking (MMI IV) / very short
Dublin / Light shaking (MMI IV) / single vertical bump / 2-5 s : quick vertical shake rattling but not too strong  
San ramon / Light shaking (MMI IV) / 2-5 s
san ramon / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
Fremont / Very weak shaking (MMI II) / very short : Felt I was shaking and got up and sat. Observed even bed was shaking.  
Dublin / Light shaking (MMI IV) / single vertical bump / 2-5 s : quick vertical shake rattling but not too strong  
Tracy,CA / not felt : Not close  
antioch (9.4 km NNW of epicenter) [Map] / Light shaking (MMI IV) / very short : Quick shake that woke me up this morning.  
FREMONT (46.5 km SSW of epicenter) [Map] / not felt (reported through our app)
94582 / Light shaking (MMI IV) / very short
CASTRO VALLEY / Very weak shaking (MMI II) / rattling, vibrating / very short
Dublin, ca / Very weak shaking (MMI II)
San ramon, ca / Very weak shaking (MMI II) / single lateral shake / 1-2 s
Dixon / Very weak shaking (MMI II) / single vertical bump / very short
dublin / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
San ramon, ca (26.5 km SW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / 2-5 s
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