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Light mag. 3.4 earthquake - 12 mi southeast of Mammoth Lakes, Mono County, California, USA, on Saturday, May 21, 2022 at 6:30 pm (GMT -7) -

Light mag. 3.4 earthquake - 12 mi southeast of Mammoth Lakes, Mono County, California, USA, on Saturday, May 21, 2022 at 6:30 pm (GMT -7) Light mag. 3.4 earthquake - 12 mi southeast of Mammoth Lakes, Mono County, California, USA, on Saturday, May 21, 2022 at 6:30 pm (GMT -7)

Light magnitude 3.4 earthquake at 5 km depth

22 May 01:35 UTC: First to report: VolcanoDiscovery after 5 minutes.
22 May 01:35: Now using data updates from EMSC
22 May 01:35: Now using data updates from USGS
Update Sun, 22 May 2022, 01:39
Small earthquake of magnitude 3.4 just reported 12 miles southeast of Mammoth Lakes, California, United States
3.4 quake 21 May 6:30 pm (GMT -7)
3.4 quake 21 May 6:30 pm (GMT -7)
A magnitude 3.4 earthquake near Mammoth Lakes, Mono County, California, USA, was reported only 9 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 3.3 miles beneath the epicenter early evening on Saturday, May 21st, 2022, at 6:30 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 Aspen Springs (pop. 65) located 6 miles from the epicenter.
Other towns or cities near the epicenter where the quake might have been felt as very weak shaking include Mammoth Lakes (pop. 7,900) located 12 miles from the epicenter, Dixon Lane-Meadow Creek (pop. 2,600) 24 miles away, and Bishop (pop. 3,800) 26 miles away. In Big Pine (pop. 1,800, 38 miles away), the quake was probably not felt.

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Earthquake data

Earthquake details

Date & timeMay 22, 2022 01:30:30 UTC -
Local time at epicenterSaturday, May 21, 2022 at 6:30 pm (GMT -7)
StatusConfirmed
Magnitude3.4
Depth5.3 km
Epicenter latitude / longitude37.51867°N / 118.82283°W (Mono, California, United States)
Antipode37.519°S / 61.177°E
Shaking intensityWeak shaking
Felt5 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoLong Valley (21 km / 13 mi)
Nearby towns and cities10 km (7 mi) WSW of Aspen Springs (pop: 65) | Show on map | Quakes nearby
20 km (12 mi) SE of Mammoth Lakes (pop: 7,950) | Show on map | Quakes nearby
39 km (24 mi) WNW of Dixon Lane-Meadow Creek (pop: 2,650) | Show on map | Quakes nearby
110 km (68 mi) NE of Clovis (pop: 104,200) | Show on map | Quakes nearby
111 km (69 mi) NE of Sanger (Fresno County) (pop: 25,000) | Show on map | Quakes nearby
120 km (75 mi) NE of Fresno (pop: 520,100) | Show on map | Quakes nearby
126 km (78 mi) ENE of Madera (pop: 64,200) | Show on map | Quakes nearby
262 km (163 mi) ESE of Sacramento (pop: 490,700) | Show on map | Quakes nearby
Weather at epicenter at time of quakeClear Sky 12.9°C (55 F), humidity: 20%, wind: 6 m/s (12 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
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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
3.45.3 km14km WSW of Toms Place, CAUSGS
3.05 kmCENTRAL CALIFORNIAEMSC
3.45.3 kmCalifornia-Nevada Border RegionRaspberryShake

User reports for this quake (5)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Mammoth Lakes, Mono, California (21.1 km NW of epicenter) [Map] / Weak shaking (MMI III) : Shook the house | One user found this interesting.  
Mammoth Lakes, Mono, California (21.1 km NW of epicenter) [Map] / Weak shaking (MMI III) : Shook the house | One user found this interesting.  
Pine flat lake / Weak shaking (MMI III) / complex motion difficult to describe : We were on the lake in a boat slip and all the boats surrounding is and our boat bobbed up and down for no apparent reason, no waves etc. Then we found out about the earthquake at Mammoth  
Convict Lake, CA / Very weak shaking (MMI II) / rattling, vibrating / very short : Light vibrating | One user found this interesting.  
Mammoth Lakes, Mono, California (21.1 km NW of epicenter) [Map] / Weak shaking (MMI III) : Shook the house  
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