Light mag. 3.4 earthquake - 25 mi north of Santa Rosa, Sonoma County, California, USA, on Saturday, Apr 30, 2022 at 8:17 pm (GMT -7) -

Light mag. 3.4 earthquake - 25 mi north of Santa Rosa, Sonoma County, California, USA, on Saturday, Apr 30, 2022 at 8:17 pm (GMT -7) Light mag. 3.4 earthquake - 25 mi north of Santa Rosa, Sonoma County, California, USA, on Saturday, Apr 30, 2022 at 8:17 pm (GMT -7)

Light magnitude 3.4 earthquake at 3 km depth

1 May 03:20 UTC: First to report: RaspberryShake after 2 minutes.
1 May 03:22: Now using data updates from USGS
Update Sun, 1 May 2022, 03:30
Magnitude 3.4 earthquake strikes near Windsor, Sonoma County, California, USA
3.4 quake 30 Apr 8:17 pm (GMT -7)
3.4 quake 30 Apr 8:17 pm (GMT -7)
A magnitude 3.4 earthquake near Windsor, Sonoma County, California, USA, was reported only 13 minutes ago by the United States Geological Survey, considered the key international and national agency that monitors seismic activity in the US. The earthquake occurred at a very shallow depth of 1.7 miles beneath the epicenter in the evening on Saturday, April 30th, 2022, at 8:17 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.
Our monitoring service identified a second report from the citizen-seismograph network of RaspberryShake which listed the quake at magnitude 3.4 as well. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 3.4.
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 Cobb (pop. 1,800) located 5 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Cloverdale (pop. 8,800) located 11 miles from the epicenter, Russian River (pop. 11,700) 13 miles away, Russian River (pop. 11,700) 13 miles away, Clearlake (pop. 15,200) 15 miles away, Windsor (pop. 27,500) 17 miles away, and Santa Rosa (pop. 175,000) 25 miles away. In Rohnert Park (pop. 42,400, 32 miles away), and Napa (pop. 80,400, 45 miles away), the quake was probably not felt.

Download the Volcanoes & Earthquakes app and get one of the fastest seismic alerts online:
Android | iOS

Earthquake data

Earthquake details

Date & timeMay 1, 2022 03:17:37 UTC -
Local time at epicenterSaturday, Apr 30, 2022 at 8:17 pm (GMT -7)
StatusConfirmed
Magnitude3.4
Depth2.8 km
Epicenter latitude / longitude38.799°N / 122.8125°W (Sonoma, California, United States)
Antipode38.799°S / 57.188°E
Shaking intensityLight shaking
Felt4 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoClear Lake (19 km / 12 mi)
Nearby towns and cities8 km (5 mi) WSW of Cobb (pop: 1,780) | Show on map | Quakes nearby
18 km (11 mi) E of Cloverdale (Sonoma County) (pop: 8,810) | Show on map | Quakes nearby
22 km (13 mi) NNE of Russian River (Sonoma County) (pop: 11,700) | Show on map | Quakes nearby
22 km (13 mi) NNE of Russian River (pop: 11,700) | Show on map | Quakes nearby
24 km (15 mi) SW of Clearlake (Lake County) (pop: 15,200) | Show on map | Quakes nearby
28 km (17 mi) N of Windsor (Sonoma County) (pop: 27,500) | Show on map | Quakes nearby
41 km (25 mi) NNW of Santa Rosa (pop: 175,000) | Show on map | Quakes nearby
52 km (32 mi) N of Rohnert Park (pop: 42,400) | Show on map | Quakes nearby
72 km (45 mi) NW of Napa (pop: 80,400) | Show on map | Quakes nearby
117 km (73 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: 63%, wind: 4 m/s (7 kts) from WNW
Estimated seismic energy released7.9 x 109 joules (2.21 megawatt hours, equivalent to 1.9 tons of TNT) | about seismic energy
Show interactive Map
[smaller] [bigger]
If you felt this quake (or if you were near the epicenter), please share your experience and submit a short "I felt it" report! Other users would love to hear about it!
If you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable to earthquake science, seismic hazard analysis and mitigation efforts. You can use your device location or the map to indicate where you were during the earthquake. Thank you!

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
3.42.8 km5km WNW of The Geysers, CAUSGS
3.05 kmNORTHERN CALIFORNIAEMSC
3.42.8 kmNorthern CaliforniaRaspberryShake

User reports for this quake (4)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Translate
Porterville ca (447.2 km SE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s
Geyserville / Weak shaking (MMI III) / very short
Geyserville / Light shaking (MMI IV) / 1-2 s
Geyserville / Weak shaking (MMI III) / very short
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area

Try our free app!
Volcanoes & Earthquakes - new app for Android
Android | iOS version
Why is there advertising on this site?
Support us - Help us upgrade our services!
We truly love working to bring you the latest volcano and earthquake data from around the world. Maintaining our website and our free apps does require, however, considerable time and resources.
We need financing to increase hard- and software capacity as well as support our editor team. We're aiming to achieve uninterrupted service wherever an earthquake or volcano eruption unfolds, and your donations can make it happen! Every donation will be highly appreciated. If you find the information useful and would like to support our team in integrating further features, write great content, and in upgrading our soft- and hardware, please make a donation (PayPal or Online credit card payment).

Planned features:
  • Improved multilanguage support
  • Tsunami alerts
  • Faster responsiveness
Thanks to your past donations, these features have been added recently:
  • Earthquake archive from 1900 onwards
  • Detailed quake stats
  • Additional seismic data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Sources: VolcanoDiscovery / VolcanoAdventures and other sources as noted.
Use of material: Most text and images on our websites are owned by us. Re-use is generally not permitted without authorization. Contact us for licensing rights.
Volcanoes & Earthquakes
VolcanoDiscovery Home
Adventure & Study Travel
Tours to Volcanoes and Volcanic Areas: walking tours, photo tours, study tours Get our newsletter!
Company info
Contact | Legal info | Terms & conditions
Follow us
Follow us on facebook Follow us on Instagram Follow us on Twitter Visit our Youtube channel
EN | DE | EL | ES | FR | IT | RU
VolcanoDiscovery GmbH, Germany, Reg. nr.: HRB 103744, EU Tax Id: DE 310 395 322 owned and created by
Dr. Tom Pfeiffer, volcanologist, volcano photographer, tour organizer member of
IAVCEI
Volcanological Society
Ecotourism Greece
Insured by R+V
VolcanoDiscovery © 2004- All Rights Reserved | Privacy - cookie settings