Mag. 4.2 earthquake - 1km WSW of The Geysers, CA (USA), on 2019-11-03 12:34:57 -08:00 -

Mag. 4.2 earthquake  - 1km WSW of The Geysers, CA (USA), on 2019-11-03 12:34:57 -08:00

Light magnitude 4.2 earthquake at 3 km depth

3 Nov 20:39 UTC: First to report: USGS after 4 minutes.
Nov 3 20:40: Magnitude recalculated from 3.9 to 4.1.
Nov 3 21:08: Magnitude recalculated from 4.1 to 4.2.
Hypocenter depth recalculated from 2.2 to 3.1 km.
Date & time: 3 Nov 2019 08:34:57 UTC -
Local time at epicenter: 2019-11-03 12:34:57 -08:00
Magnitude: 4.2
Depth: 3.1 km
Epicenter latitude / longitude: 38.775°N / 122.767°W (United States)
Nearest volcano: Clear Lake (22 km / 14 mi)
Nearby towns and cities:
6 km (4 mi) SW of Cobb (pop: 1,780)
18 km (11 mi) WSW of Hidden Valley Lake (pop: 5,580)
20 km (13 mi) NNE of Healdsburg (Sonoma County) (pop: 11,700)
22 km (14 mi) E of Cloverdale (Sonoma County) (pop: 8,810)
24 km (15 mi) SSW of Clearlake (Lake County) (pop: 15,200)
37 km (23 mi) N of Santa Rosa (pop: 175,000)
113 km (70 mi) W of Sacramento (pop: 490,700)
115 km (72 mi) NNW of San Francisco (pop: 864,800)
Primary data source: USGS
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
[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!
Also if you did NOT feel the quake although you were in the area, please report it! Your contribution is valuable also to earthquake science and earthquake 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.
MagnitudeDepthLocationSource
M 4.23.1 km1km WSW of The Geysers, CA (USA)USGS
M 4.12 kmNorthern California (USA)EMSC

User reports for this quake (12)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Contribute:
Leave a comment if you find a particular report interesting or want to add to it.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Denver Colorado / Moderate shaking (MMI V) : n
Geysers, CA / Violent shaking (MMI IX)
Concord, CA (109.4 km SE of epicenter) [Map] / not felt (reported through our app)
Healdsburg Ca / Light shaking (MMI IV)
Healdsburg (United States of America, 21 km SW of epicenter) : Definitely felt it (reported through EMSC)
Galt (United States of America, 141 km SE of epicenter) : Felt a rolling motion (reported through EMSC)
Sacramento (United States of America, 113 km E of epicenter) : Room shook while i was watching TV (reported through EMSC)
Sacramento (United States of America, 110 km E of epicenter) : I felt a few slight bumps while laying on my bed - thought earthquake? Noted the time, checked this site just now and yep it was what I thought it was. (reported through EMSC)
Reno (United States of America, 269 km E of epicenter) : Felt a rumble (reported through EMSC)
San Mateo (United States of America, 143 km S of epicenter) : didn't feel it (reported through EMSC)
Santa Rosa (United States of America, 38 km S of epicenter) : This CANNOT be right- I could maybe see many of us sleeping through the 7AM 3.9 yesterday due to exhaustion or such after returning from wildfire evacs, but nobody even noticing a 4.1 in early afternoon on a Sunday??? When we are directly downstream of the faultlines and energy?? And most people would catch a mid 3 normally? Something is off here; lifetime N CA earthquake zones resident for nearly 60 years and not worried about most quakes, let alone at The Geysers pressure release points, and there is no way this is accurate data reporting. JS (reported through EMSC)
Middletown (United States of America, 14 km E of epicenter) : Could hear it coming, and it lasted for a while. (reported through EMSC)
Volcanoes & Earthquakes - new app for Android

Earlier earthquakes in the same area

Mag. 4.2 earthquake - 1km WSW of The Geysers, CA (USA), on 2019-11-03 12:34:57 -08:00
Volcanoes & Earthquakes - new app for Android
 

More on VolcanoDiscovery

 
Why is there advertising on this site?

Support us!

Maintaining the website and our free apps is a time- and cost-intensive effort.
If you find the information useful and would like to support our team to develop further features and get the upgraded ad-free version, consider making a donation (PayPal or Online cc payment).
Planned features:
  • Weather reports
  • Tsunami alerts
  • Design upgrades
Thanks to your past donations, these features have been added recently:
  • Earthquake archive back to 1900
  • Additional data sources
Download and Upgrade the Volcanoes & Earthquakes app to get one of the fastest seismic and volcano alerts online:
Android | IOS
Thank you!
Copyrights: VolcanoDiscovery and other sources as noted.
Use of material: Most texts and images, in particular photographs, on this website are protected by copyright. Further reproduction and use of without authorization is usually not consented. If you are not sure or need licensing rights for photographs, for example for publications and commercial use, please contact us.