Moderate mag. 4.2 earthquake - 27 mi north of Santa Rosa, Sonoma County, California, USA, on Tuesday, Jun 28, 2022 at 4:57 am (GMT -7) -

Moderate mag. 4.2 earthquake - 27 mi north of Santa Rosa, Sonoma County, California, USA, on Tuesday, Jun 28, 2022 at 4:57 am (GMT -7) Moderate mag. 4.2 earthquake - 27 mi north of Santa Rosa, Sonoma County, California, USA, on Tuesday, Jun 28, 2022 at 4:57 am (GMT -7)

Moderate magnitude 4.2 earthquake at 1 km depth

28 Jun 12:01 UTC: First to report: USGS after 4 minutes.
28 Jun 12:03: Magnitude recalculated from 3.8 to 4.2.
28 Jun 16:32: Hypocenter depth recalculated from 0.3 to 0.5 km (from 0.2 to 0.3 mi).
Update Tue, 28 Jun 2022, 12:09
Moderate magnitude 4.2 earthquake 27 miles north of Santa Rosa, California, United States
4.2 quake 28 Jun 4:57 am (GMT -7)
4.2 quake 28 Jun 4:57 am (GMT -7)
Just 11 minutes ago, a 4.2-magnitude earthquake struck near Santa Rosa, Sonoma County, California, USA. The tremor was recorded early morning on Tuesday, June 28th, 2022, at 4:57 am local time, at a very shallow depth of 0.2 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 4.2 earthquake as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.2.
Based on the preliminary seismic data, the quake should have been widely felt by almost everyone in the area of the epicenter. It might have caused light to moderate damage.
Moderate shaking probably occurred in Cobb (pop. 1,800) located 2 miles from the epicenter.
Weak shaking might have been felt in Clearlake (pop. 15,200) located 11 miles from the epicenter, Russian River (pop. 11,700) 17 miles away, Russian River (pop. 11,700) 17 miles away, Windsor (pop. 27,500) 20 miles away, and Santa Rosa (pop. 175,000) 27 miles away.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Ukiah (pop. 15,900) located 33 miles from the epicenter, Rohnert Park (pop. 42,400) 34 miles away, and Petaluma (pop. 60,400) 42 miles away.
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Earthquake data

Earthquake details

Date & timeJun 28, 2022 11:57:40 UTC -
Local time at epicenterTuesday, Jun 28, 2022 at 4:57 am (GMT -7)
Depth0.5 km
Epicenter latitude / longitude38.83017°N / 122.74717°W (Lake, California, United States)
Antipode38.83°S / 57.253°E
Shaking intensityLight shaking
Felt8 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoClear Lake (16 km / 10 mi)
Nearby towns and cities2 km (1 mi) WNW of Cobb (pop: 1,780) | Show on map | Quakes nearby
17 km (10 mi) W of Hidden Valley Lake (pop: 5,580) | Show on map | Quakes nearby
18 km (11 mi) SW of Clearlake (Lake County) (pop: 15,200) | Show on map | Quakes nearby
27 km (17 mi) NNE of Russian River (Sonoma County) (pop: 11,700) | Show on map | Quakes nearby
27 km (17 mi) NNE of Russian River (pop: 11,700) | Show on map | Quakes nearby
32 km (20 mi) N of Windsor (Sonoma County) (pop: 27,500) | Show on map | Quakes nearby
43 km (27 mi) N of Santa Rosa (pop: 175,000) | Show on map | Quakes nearby
112 km (70 mi) WNW of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 11.4°C (53 F), humidity: 31%, wind: 3 m/s (5 kts) from NW
Estimated seismic energy released1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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.
4.20.5 km2km WNW of Cobb, CAUSGS
4.20.5 kmNorthern CaliforniaRaspberryShake

User reports for this quake (11)

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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Mark as helpful or interesting.
Send your own user report!
West Sacramento, CA / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : Light, continuous shaking. I felt multiple smaller quakes a few times during the night. There was a big one felt at 1:55pm yesterday… | 9 users found this interesting.  
Loch Lomond, Ca (6.4 km NE of epicenter) [Map] / Light shaking (MMI IV) / complex motion difficult to describe / 1-2 s : Strong jolt like my 6’ male partner sitting very hard with his whole weight on the bed while I was sleeping. Woke me up. | 3 users found this interesting.  
Mountain home ranch rd. / Very weak shaking (MMI II) / single vertical bump / very short : Very short, quick, light shaking. | 2 users found this interesting. (reported through our app)  
Kelseyville / Light shaking (MMI IV) / horizontal (sideways) swinging / 20-30 s : It was decent small light shake and the house rumbled a bit causing bags to fall over. | One user found this interesting.  
Roseville, Placer, California (126.7 km E of epicenter) [Map] / not felt (reported through our app)
Silver Peak NV / not felt (reported through our app)
Little River CA / Light shaking (MMI IV) / single lateral shake / very short : felt house move sise-to-side (a tiny house on a trailer frame)  
San leandro / not felt (reported through our app)
Vacaville, CA / Very weak shaking (MMI II) / 1-2 s
cobb, CA / Moderate shaking (MMI V)
Geyserville, CA / Weak shaking (MMI III) / vibration and rolling / 1-2 s
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