Information about the earthquake: mag of light. 3.5 earthquake
Magnitude earthquake 3.5 to 10 km deep
October 8 00:18 UTC: First to report: USGS after 4 minutes.
October 8 03:18: Magnitude recalculated from 3.7 to 3.5.
October 8 04:32: Depth of the hypocenter recalculated from 7.9 to 9.6 km (4.9 to 6 mi). Epicenter location corrected 0.7 km (0.4 mi) towards E.
Updated Fri Oct 8, 2021, 12:24 AM
A small earthquake of magnitude 3.7 has just been reported 31 miles north of Mammoth Lakes, California, United States
3.7 earthquake October 7 17:13 (GMT -7)
A magnitude 3.7 earthquake occurred on the afternoon of Thursday, October 7, 2021 at 5:13 p.m. local time near Mammoth Lakes in Mono County, California, United States, as reported the United States Geological Survey.
According to preliminary data, the earthquake was located at a very shallow depth of 4.9 miles. Shallow earthquakes are felt more strongly than deep ones because they are closer to the surface. The exact magnitude, epicenter and depth of the quake could be revised in the coming hours or minutes, as seismologists review the data and refine their calculations, or when other agencies release their report.
A second report was then published by the Euro-Mediterranean Seismological Center (EMSC), which classified it as a magnitude 3.8 earthquake.
Based on preliminary seismic data, the quake should not have caused significant damage, but was likely felt by many as a slight vibration in the epicenter area.
Weak tremors may have been felt in Mono City (170 inhabitants) located 18 km from the epicenter.
Other towns or cities near the epicenter where the quake could have been felt as very weak tremors include Mammoth Lakes (pop. 7,900) located 31 miles from the epicenter and Hawthorne (pop. 3,300) at 35 miles.
If you were or still are in this area during the earthquake help others with your comments and report it here.
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Earthquake data
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Date and hour : October 8, 2021 12:13:49 AM UTC –
Local time at epicenter: Thursday October 7, 2021 5:13 pm (GMT -7)
Size: 3.5
Depth: 9.6 km
Latitude / longitude of epicenter: 38.10183 ° N / 118.95333 ° W↗ 
(Mono, California, United States)
Antipode: 38.102 ° S / 61.047 ° E↗
Nearest volcano: Mono Lake (13 km / 8 mi)
Nearby towns and villages:
18 km (11 mi) ENE of Mono-city (pop: 172) -> See nearby earthquakes!
50 km (31 mi) N of Mammoth Lakes (pop: 7,950) -> Observe the earthquakes nearby!
55 km (34 mi) SSO of Hawthorn (Nevada) (pop: 3,270) -> Observe the earthquakes nearby!
93 km (58 mi) NNW of Dixon Lane-Meadow Creek (pop: 2,650) -> Watch the earthquakes nearby!
129 km (80 mi) southeast of South Lake Tahoe (El Dorado County) (pop: 21,700) -> Observe the earthquakes nearby!
138 km (86 mi) to SSE of Carson City, Nevada (pop: 54,500) -> Observe the earthquakes nearby!
157 km (97 mi) NNE of Clovis (pop: 104,200) -> Observe the earthquakes nearby!
160 km (99 mi) northeast of Madeira (pop: 64,200) -> Observe the earthquakes nearby!
161 km (100 mi) NE of Merced (pop: 82,400) -> See nearby earthquakes!
228 km (142 mi) ESE of Sacramento (pop: 490,700) -> See earthquakes nearby!
Broken clouds
16.4 ° C (62 F), humidity: 20%, wind: 7 m / s (14 kts) from SSWMain data source: USGS (United States Geological Survey)
Estimated energy released: 1.1 x 10ten joules (3.12 megawatt hours, equivalent to 2.68 tonnes of TNT) Find out more
If you did NOT feel the earthquake although you are in the area, please report it! Your contribution is valuable to earthquake science, seismic risk analysis and mitigation efforts. You can use your device’s location or the map to show where you were during the earthquake. Thank you!
Data for the same earthquake reported by different agencies
Info: The more agencies report the same earthquake and publish similar data, the more confidence you can have in the data. It normally takes up to a few hours for the seismic parameters to be calculated with near optimum accuracy.
| Mag. | Depth | Site | Source |
| 3.5 | 9.6 km | 13 km on the southeast of Bodie, CA | USGS |
| 3.4 | 8 km | CENTRAL CALIFORNIA | EMSC |
Previous earthquakes in the same region
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