Moderate mag. 4.6 earthquake - Mono County, 38 mi southeast of South Lake Tahoe, El Dorado County, California, USA, on 8 Jul 6:46 pm (GMT -7) -

This quake was likely an aftershock of the 5.2 quake Mono County, 38 mi southeast of South Lake Tahoe, El Dorado County, California, USA, July, 8 2021 22:50 GMT, which had occurred 2 hours and 56 minutes earlier.
Moderate mag. 4.6 earthquake - Mono County, 38 mi southeast of South Lake Tahoe, El Dorado County, California, USA, on 8 Jul 6:46 pm (GMT -7)

Moderate magnitude 4.6 earthquake at 4 km depth

9 Jul 01:49 UTC: First to report: VolcanoDiscovery after 3 minutes.
9 Jul 01:50: Now using data updates from USGS
... [show all] ...
10 Jul 01:28: Hypocenter depth recalculated from 8.3 to 3.7 km (from 5.2 to 2.3 mi). Epicenter location corrected by 0.9 km (0.6 mi) towards SW.
Update Fri, 9 Jul 2021, 01:54
Moderate 4.5 quake hits near South Lake Tahoe, El Dorado County, California, USA
4.5 quake 8 Jul 6:46 pm (GMT -7)
4.5 quake 8 Jul 6:46 pm (GMT -7)
The United States Geological Survey reported a magnitude 4.5 quake in the United States near South Lake Tahoe, El Dorado County, California, only 8 minutes ago. The earthquake hit early evening on Thursday 8 July 2021 at 6:46 pm local time at a very shallow depth of 5.2 miles. 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 European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.9.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Walker (pop. 720) located 3 miles from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Topaz Ranch Estates (pop. 1,500) located 15 miles from the epicenter, Smith Valley (pop. 1,600) 21 miles away, Gardnerville Ranchos (pop. 11,300) 28 miles away, Gardnerville (pop. 5,700) 32 miles away, Gardnerville (pop. 5,700) 32 miles away, South Lake Tahoe (pop. 21,700) 38 miles away, and Johnson Lane (pop. 6,500) 38 miles away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.
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Earthquake data

Date & time: Jul 9, 2021 01:46:00 UTC -
Local time at epicenter: 8 Jul 6:46 pm (GMT -7)
Magnitude: 4.6
Depth: 3.7 km
Epicenter latitude / longitude: 38.50867°N / 119.53433°W (Mono, California, United States)
Antipode: 38.509°S / 60.466°E
Nearest volcano: Mono Lake (72 km / 45 mi)
Nearby towns and cities:
5 km (3 mi) W of Walker (pop: 721) --> See nearby quakes!
25 km (16 mi) S of Topaz Ranch Estates (Nevada) (pop: 1,500) --> See nearby quakes!
35 km (22 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!
61 km (38 mi) SE of South Lake Tahoe (El Dorado County) (pop: 21,700) --> See nearby quakes!
62 km (39 mi) SSE of Johnson Lane (Douglas County, Nevada) (pop: 6,490) --> See nearby quakes!
81 km (50 mi) S of Nevada City (Lyon County) (pop: 8,960) --> See nearby quakes!
96 km (59 mi) ESE of Pollock Pines (El Dorado County) (pop: 6,870) --> See nearby quakes!
171 km (106 mi) E of Sacramento (pop: 490,700) --> See nearby quakes!
197 km (122 mi) N of Fresno (pop: 520,100) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 28.9°C (84 F), humidity: 18%, wind: 6 m/s (12 kts) from SW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 5 x 1011 joules (139 megawatt hours, equivalent to 120 tons of TNT) More info
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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
4.63.7 km30km SE of Markleeville, CAUSGS
4.38 kmCENTRAL CALIFORNIAEMSC
4.310 kmCalifornia-Nevada Border RegionGFZ

User reports for this quake (35)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Jenn we were upstairs in our house in Pollock Pine (72.9 km NNW of epicenter) [Map] / Strong shaking (MMI VI) / both vertical and horizontal swinging / 15-20 s : It was the strongest EQ I have ever been in. I have lived n CA. 58 years. We were 59 miles from the Epicenter. It was strong enough to knock things down. | 4 users found this interesting. (reported through our app)  
  • Always one person in CA who reports a quake way higher than anyone else.
Rocklin, CA / Light shaking (MMI IV) / both vertical and horizontal swinging : Sitting in my car parked in lot. Vehicle was moving front to back and side to side. The Ross store windows appeared to be waving. | 2 users found this interesting.  
Modesto (162.1 km SW of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 2-5 s : In the pool, sloshing and waves, outdoor light fixtures and umbrellas moving. Heard some kind of sound first then immediate movement. | One user found this interesting.  
Suisun / Light shaking (MMI IV) / complex motion difficult to describe / 2-5 s : I was sitting at my desk and you wouldn’t chair and the chair felt like it was dumping a little bit and I looked around and noticed things swinging slightly. | One user found this interesting.  
San Francisco (271.2 km WSW of epicenter) [Map] / Light shaking (MMI IV) / both vertical and horizontal swinging / 5-10 s : 2 short wavy jolts, each for several seconds | One user found this interesting. (reported through our app)  
Luther Rd., Auburn, CA (142.3 km WNW of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 10-15 s : I felt light shaking/movement. | One user found this interesting. (reported through our app)  
Citrus Heights, CA / Weak shaking (MMI III) / vibration and rolling / 5-10 s : I noticed while sitting still I began feeling dizzy. When looking around I saw some items were shaking on my table.  
Folsom / Weak shaking (MMI III) : Glasses rattling and felt when sitting on couch on third floor. | One user found this interesting.  
Reno (117.1 km NNW of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s (reported through our app)
Gardnerville, Douglas, Nevada (52 km NNW of epicenter) [Map] / Weak shaking (MMI III) / 2-5 s (reported through our app)
bakersfield (354.9 km S of epicenter) [Map] / Very weak shaking (MMI II) / single lateral shake / very short (reported through our app)
St Thomas Aquinas Church Reno, NV (123.9 km NNE of epicenter) [Map] / not felt (reported through our app)
Modesto, Stanislaus, California (159.3 km SW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s (reported through our app)
SILVER PEAK NV (185.8 km ESE of epicenter) [Map] / not felt (reported through our app)
Stockton, San Joaquin, California (165 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / vibration and rolling / 2-5 s (reported through our app)
Gardnerville (51.6 km NNW of epicenter) [Map] / Light shaking (MMI IV) / 5-10 s (reported through our app)
Smith, Lyon, Nevada (37.2 km NE of epicenter) [Map] / Light shaking (MMI IV) / simple rolling (tilting sideways along one direction) / 5-10 s (reported through our app)
Garden Acres, San Joaquin, California (160.8 km WSW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 s
Stockton, San Joaquin, California (167.8 km WSW of epicenter) [Map] / not felt (reported through our app)
El Dorado, Calaveras, California (96.4 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s
Pollock Pines (96.1 km WNW of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Stockton (165 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / simple rolling (tilting sideways along one direction) / 2-5 s (reported through our app)
Hughson, Stanislaus, California (154.1 km SW of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 1-2 s (reported through our app)
Denair, Ca (152.6 km SW of epicenter) [Map] / Weak shaking (MMI III) / complex rolling (tilting in multiple directions) / 5-10 s
LAS VEGAS (453.7 km ESE of epicenter) [Map] / not felt (reported through our app)
Oakley, CA (198.8 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : A quick set of small bumps  
Arnold, California (76.5 km WSW of epicenter) [Map] / Moderate shaking (MMI V) / both vertical and horizontal swinging / 20-30 s : Back and forth rolling shake.  
Minden, Douglas, Nevada (54.2 km NNW of epicenter) [Map] / Very weak shaking (MMI II) : House creaked and couch shook  
Sonora, CA (91.6 km SW of epicenter) [Map] / Light shaking (MMI IV) / vibration and rolling / 10-15 s
Manteca / Light shaking (MMI IV)
Manteca, Ca / Weak shaking (MMI III) / horizontal (sideways) swinging / 5-10 s : Light swaying, didn’t last long  
Pine Grove Ca 95665 / Weak shaking (MMI III) / horizontal (sideways) swinging / 20-30 s
El Dorado Hills / not felt
Grass Valley / Very weak shaking (MMI II)
Camino, ca / Weak shaking (MMI III)
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