QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

14km SSE of Bridgeport, CA

· -1.3 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 37 kmTuolumne County 68 kmAlpine County 76 kmMineral County 80 kmMariposa County 88 kmDouglas County 93 kmLyon County 99 kmMadera County 114 kmCalaveras County 119 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
-1.3 km below the surface
Felt
no reports yet
Nearest
Mono County, 37 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1182 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 60 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 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 38.1318, -119.1952. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 37 km (23 mi) NW of here earthquakes near Mono County
Tuolumne County, CA 68 km (43 mi) E of here earthquakes near Tuolumne County
Alpine County, CA 76 km (47 mi) SE of here earthquakes near Alpine County
Mineral County, NV 80 km (50 mi) WSW of here earthquakes near Mineral County
Mariposa County, CA 88 km (55 mi) NE of here earthquakes near Mariposa County
Douglas County, NV 93 km (58 mi) SSE of here earthquakes near Douglas County

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

Aftershocks so far

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

  1. 2.3 9 km NW of Bridgeport, CA
  2. 2.8 8 km NW of Bridgeport, CA
  3. 2.6 8 km NW of Bridgeport, CA
  4. 1.6 28 km ESE of Bodie, CA
  5. 1.5 30 km SW of Hawthorne, Nevada
  6. 2.2 California-Nevada border region
  7. 2.4 30 km ENE of Bridgeport, California
  8. 3.2 29 km ENE of Bridgeport, California
  9. 1.6 30 km ENE of Bridgeport, California
  10. 2.1 30 km SW of Hawthorne, Nevada
  11. 1.5 30 km SW of Hawthorne, Nevada
  12. 1.9 30 km SSW of Hawthorne, Nevada
  13. 1.6 29 km SW of Hawthorne, Nevada
  14. 1.6 6 km E of Walker, California
  15. 1.5 12 km WNW of Bridgeport, California

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 500,000 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.