QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

6km SE of Bridgeport, CA

· 8.4 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 43 kmAlpine County 70 kmTuolumne County 72 kmMineral County 75 kmDouglas County 85 kmLyon County 89 kmMariposa County 96 kmCarson City 115 kmCalaveras County 120 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 1.9 (md)
Depth
8.4 km below the surface
Felt
no reports yet
Nearest
Mono County, 43 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1371 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 38.2188, -119.1852. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 43 km (27 mi) NW of here earthquakes near Mono County
Alpine County, CA 70 km (43 mi) SE of here earthquakes near Alpine County
Tuolumne County, CA 72 km (45 mi) ENE of here earthquakes near Tuolumne County
Mineral County, NV 75 km (46 mi) WSW of here earthquakes near Mineral County
Douglas County, NV 85 km (53 mi) SSE of here earthquakes near Douglas County
Lyon County, NV 89 km (56 mi) S of here earthquakes near Lyon County

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

Aftershocks so far

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

  1. 2.4 5km W of Walker, CA
  2. 1.7 14km NNE of Lee Vining, CA
  3. 2.5 27km SE of Bodie, CA
  4. 2.0 29km SE of Bodie, CA
  5. 1.5 12 km ENE of Bridgeport, California
  6. 2.3 13km SW of Walker, CA
  7. 2.8 28 km WSW of Hawthorne, Nevada
  8. 1.5 24 km E of Mono City, California
  9. 1.8 27 km WSW of Hawthorne, Nevada
  10. 1.5 5 km SW of Coleville, California
  11. 2.0 24km SE of Bodie, CA
  12. 1.5 37km SE of Bodie, CA
  13. 2.2 7km WNW of Walker, CA
  14. 2.3 5km WNW of Walker, CA
  15. 2.1 5km WNW of Walker, 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 1,400,000 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.