Moderate mag. 3.9 earthquake - Mono County, 43 mi southeast of South Lake Tahoe, El Dorado County, California, USA, on 8 Jul 5:05 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 1 hour and 15 minutes earlier.
Moderate mag. 3.9 earthquake - Mono County, 43 mi southeast of South Lake Tahoe, El Dorado County, California, USA, on 8 Jul 5:05 pm (GMT -7)

Moderate magnitude 3.9 earthquake at 5 km depth

9 Jul 00:09 UTC: First to report: EMSC after 4 minutes.
9 Jul 00:09: Now using data updates from USGS
9 Jul 09:02: Magnitude recalculated from 4.0 to 3.9. Hypocenter depth recalculated from 5.5 to 4.8 km (from 3.4 to 3 mi).
Update Fri, 9 Jul 2021, 00:15
Magnitude 4.0 earthquake strikes near South Lake Tahoe, El Dorado County, California, USA
4.0 quake 8 Jul 5:05 pm (GMT -7)
4.0 quake 8 Jul 5:05 pm (GMT -7)
An earthquake of magnitude 4.0 occurred only 10 minutes ago 43 miles southeast of South Lake Tahoe, California, United States, the United States Geological Survey reported.
The quake hit at a very shallow depth of 3.4 miles beneath the epicenter near South Lake Tahoe, El Dorado County, California, USA, in the afternoon on Thursday 8 July 2021 at 5:05 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 European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.0 as well.
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 4 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 19 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Smith Valley (pop. 1,600) located 24 miles from the epicenter, Gardnerville Ranchos (pop. 11,300) 33 miles away, Gardnerville (pop. 5,700) 37 miles away, Gardnerville (pop. 5,700) 37 miles away, South Lake Tahoe (pop. 21,700) 43 miles away, and Carson City (pop. 54,500) 52 miles away.
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Earthquake data

Date & time: Jul 9, 2021 00:05:21 UTC -
Local time at epicenter: 8 Jul 5:05 pm (GMT -7)
Magnitude: 3.9
Depth: 4.8 km
Epicenter latitude / longitude: 38.45633°N / 119.4825°W (Mono, California, United States)
Antipode: 38.456°S / 60.518°E
Nearest volcano: Mono Lake (64 km / 40 mi)
Nearby towns and cities:
7 km (4 mi) S of Walker (pop: 721) --> See nearby quakes!
31 km (19 mi) S of Topaz Ranch Estates (Nevada) (pop: 1,500) --> See nearby quakes!
38 km (24 mi) SSW of Smith Valley (Nevada) (pop: 1,600) --> See nearby quakes!
53 km (33 mi) SSE of Gardnerville Ranchos (Nevada) (pop: 11,300) --> See nearby quakes!
69 km (43 mi) SE of South Lake Tahoe (El Dorado County) (pop: 21,700) --> See nearby quakes!
82 km (51 mi) SSE of Carson City (Nevada) (pop: 54,500) --> See nearby quakes!
122 km (76 mi) SSE of Sparks (Nevada) (pop: 96,100) --> See nearby quakes!
123 km (76 mi) SSE of Reno (Nevada) (pop: 241,400) --> See nearby quakes!
161 km (100 mi) NE of Modesto (pop: 211,300) --> See nearby quakes!
176 km (109 mi) E of Sacramento (pop: 490,700) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 28.7°C (84 F), humidity: 15%, wind: 8 m/s (15 kts) from SW
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) More info
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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.
3.94.8 km31km NW of Bridgeport, CAUSGS

User reports for this quake (6)

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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South Lake Tahoe CA / Very weak shaking (MMI II) / single vertical bump / very short : Thought it was n aftershock from the big one we felt almost 30 minutes ago. There have been at least 5 smaller little shakes since CRE the 5.9 very close to us. Everything shook. Scary | 2 users found this interesting.  
Pollock Pines, El Dorado, California (99.7 km WNW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating : shaking  
SILVER PEAK NV (179.2 km ESE of epicenter) [Map] / not felt (reported through our app)
Visalia (237.5 km S of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 2-5 s (reported through our app)
Stockton,CA (164.8 km WSW of epicenter) [Map] / Very weak shaking (MMI II) / single vertical bump / very short : Smooth shaking (reported through our app)  
Valley Cottage / Weak shaking (MMI III) / rattling, vibrating / 1-2 s
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