Moderate mag. 3.7 earthquake - Mono County, 39 mi southeast of South Lake Tahoe, El Dorado County, California, USA, on 15 Jul 7:18 am (GMT -7) -

This quake was likely an aftershock of the 6.0 quake Antelope Valley, CA, July, 8 2021 22:49 GMT, which had occurred 7 days earlier.
Moderate mag. 3.7 earthquake - Mono County, 39 mi southeast of South Lake Tahoe, El Dorado County, California, USA, on 15 Jul 7:18 am (GMT -7)

Moderate magnitude 3.7 earthquake at 5 km depth

15 Jul 14:22 UTC: First to report: USGS after 4 minutes.
15 Jul 14:23: Magnitude recalculated from 4.0 to 3.8.
15 Jul 14:43: Magnitude recalculated from 3.8 to 3.7.
16 Jul 11:18: Hypocenter depth recalculated from 3.2 to 4.8 km (from 2 to 3 mi). Epicenter location corrected by 1 km (0.6 mi) towards WSW.
Date & time: Jul 15, 2021 14:18:29 UTC -
Local time at epicenter: 15 Jul 7:18 am (GMT -7)
Magnitude: 3.7
Depth: 4.8 km
Epicenter latitude / longitude: 38.52183°N / 119.485°W (Mono, California, United States)
Antipode: 38.522°S / 60.515°E
Nearest volcano: Mono Lake (70 km / 43 mi)
Nearby towns and cities:
1 km (1 mi) NW of Walker (pop: 721) --> See nearby quakes!
24 km (15 mi) S of Topaz Ranch Estates (Nevada) (pop: 1,500) --> See nearby quakes!
32 km (20 mi) SSW of Smith Valley (Nevada) (pop: 1,600) --> See nearby quakes!
46 km (29 mi) SSE of Gardnerville Ranchos (Nevada) (pop: 11,300) --> See nearby quakes!
62 km (39 mi) SSE of Johnson Lane (Douglas County, Nevada) (pop: 6,490) --> See nearby quakes!
63 km (39 mi) SE of South Lake Tahoe (El Dorado County) (pop: 21,700) --> See nearby quakes!
115 km (71 mi) SSE of Sparks (Nevada) (pop: 96,100) --> See nearby quakes!
116 km (72 mi) SSE of Reno (Nevada) (pop: 241,400) --> See nearby quakes!
148 km (92 mi) E of Folsom (pop: 76,400) --> See nearby quakes!
175 km (109 mi) E of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 15.1°C (59 F), humidity: 47%, wind: 2 m/s (4 kts) from ENE
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 2.2 x 1010 joules (6.22 megawatt hours, equivalent to 5.35 tons of TNT) More info
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.
3.74.8 km32km SSW of Smith Valley, NVUSGS

User reports for this quake (9)

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.
Flag as inappropriate.
Mark as helpful or interesting.
Send your own user report!
Carson City, Nevada (75.5 km NNW of epicenter) [Map] / Weak shaking (MMI III) / vibration and rolling / 10-15 s : Gentle swaying felt like a large truck drove down the road | One user found this interesting. (reported through our app)  
New Pine Creek, or (392.2 km N of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating : Felt about a 1.5 1.8 in northern, or. | One user found this interesting.  
Gardnerville / Light shaking (MMI IV) / simple rolling (tilting sideways along one direction) / very short : Noise beforehand. Low rumble. Then the rolls | One user found this interesting.  
Las Vegas, NV / Very weak shaking (MMI II) / 5-10 s : I was upstairs in bed in SW Las Vegas and felt my bed shaking. | One user found this interesting.  
Foresthill / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : I was in bed and my bed started shaking. | One user found this interesting.  
Sacramento airport / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s
South Lake Tahoe / Very weak shaking (MMI II) / 2-5 s : Very slight shaking  
South Lake Tahoe / Very weak shaking (MMI II) / single lateral shake / 2-5 s
gardnerville, nv / Very weak shaking (MMI II) / 1-2 s
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!
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.