QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

20km SSW of Bridgeport, CA

· 7.4 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 40 kmTuolumne County 60 kmAlpine County 75 kmMariposa County 79 kmMineral County 90 kmDouglas County 96 kmLyon County 105 kmMadera County 106 kmCalaveras County 112 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 1.7 (md)
Depth
7.4 km below the surface
Felt
no reports yet
Nearest
Mono County, 40 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2875 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 38.0842, -119.2832. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 40 km (25 mi) WNW of here earthquakes near Mono County
Tuolumne County, CA 60 km (37 mi) E of here earthquakes near Tuolumne County
Alpine County, CA 75 km (46 mi) SE of here earthquakes near Alpine County
Mariposa County, CA 79 km (49 mi) NE of here earthquakes near Mariposa County
Mineral County, NV 90 km (56 mi) WSW of here earthquakes near Mineral County
Douglas County, NV 96 km (59 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

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

  1. 1.9 20km SE of Bodie, CA
  2. 1.6 22 km E of Mono City, California
  3. 1.6 23 km E of Mono City, California
  4. 1.8 20km SE of Bodie, CA
  5. 2.1 19km SE of Bodie, CA
  6. 2.7 20km SE of Bodie, CA
  7. 2.3 21km SE of Bodie, CA
  8. 1.5 20 km ENE of Mono City, California
  9. 1.5 23 km E of Mono City, California
  10. 1.8 29 km WSW of Hawthorne, Nevada
  11. 1.6 35 km NE of Mono City, California
  12. 2.6 29 km WSW of Hawthorne, Nevada
  13. 2.2 30 km SW of Hawthorne, Nevada
  14. 1.5 21km SSE of Bodie, CA
  15. 1.6 21km SE of Bodie, 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 5.6 on 2016-12-28 — it released about 620,000 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.