QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

17km NW of Bridgeport, CA

· 3.9 km deep · released about 62 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alpine County 47 kmDouglas County 63 kmMono County 66 kmTuolumne County 67 kmLyon County 73 kmMineral County 83 kmCarson City 93 kmMariposa County 102 kmCalaveras County 107 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.2 (md)
Depth
3.9 km below the surface
Felt
no reports yet
Nearest
Alpine County, 47 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1826 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 38.3797, -119.3497. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alpine County, CA 47 km (29 mi) SE of here earthquakes near Alpine County
Douglas County, NV 63 km (39 mi) SSE of here earthquakes near Douglas County
Mono County, CA 66 km (41 mi) NW of here earthquakes near Mono County
Tuolumne County, CA 67 km (42 mi) NE of here earthquakes near Tuolumne County
Lyon County, NV 73 km (45 mi) S of here earthquakes near Lyon County
Mineral County, NV 83 km (51 mi) W of here earthquakes near Mineral County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

60 earthquakes have been recorded within 50 km since this one.

  1. 2.1 13km SSE of Bodie, CA
  2. 2.1 30km SSW of Smith Valley, NV
  3. 1.6 33km SE of Markleeville, CA
  4. 1.6 29km ESE of Markleeville, CA
  5. 2.3 28km ESE of Markleeville, CA
  6. 1.7 13km SSE of Bodie, CA
  7. 1.6 17 km ENE of Mono City, California
  8. 3.3 28km SE of Markleeville, CA
  9. 1.9 13km SSE of Bodie, CA
  10. 1.7 13km SSE of Bodie, CA
  11. 1.6 13km SSE of Bodie, CA
  12. 1.6 18 km ENE of Mono City, California
  13. 2.4 13km SSE of Bodie, CA
  14. 2.3 14km S of Bodie, CA
  15. 2.2 28km SE of Markleeville, CA

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 6.0 on 2021-07-08 — it released about 480,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.