QuakeIndex

Earthquake · automatic estimate, may change

M 1.5ml

5 km NNE of Bridgeport, California

· 7.3 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 52 kmAlpine County 63 kmMineral County 72 kmTuolumne County 74 kmDouglas County 76 kmLyon County 80 kmMariposa County 102 kmCarson City 106 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 1.5 (ml)
Depth
7.3 km below the surface
Felt
no reports yet
Nearest
Mono County, 52 km SSE
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 1721 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 38.3024, -119.2001. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 52 km (32 mi) NNW of here earthquakes near Mono County
Alpine County, CA 63 km (39 mi) SE of here earthquakes near Alpine County
Mineral County, NV 72 km (45 mi) WSW of here earthquakes near Mineral County
Tuolumne County, CA 74 km (46 mi) ENE of here earthquakes near Tuolumne County
Douglas County, NV 76 km (47 mi) SSE of here earthquakes near Douglas County
Lyon County, NV 80 km (50 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

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

  1. 1.6 4 km SW of Walker, California
  2. 2.2 3km W of Walker, CA
  3. 2.2 6km NW of Walker, CA
  4. 2.8 6km WNW of Bodie, CA
  5. 2.8 6km WNW of Bodie, CA
  6. 3.5 6km WNW of Bodie, CA
  7. 1.5 1 km N of Walker, California
  8. 2.2 6km WNW of Walker, CA
  9. 2.2 5km WNW of Walker, CA
  10. 1.5 4 km W of Walker, California
  11. 2.8 8km NNE of Walker, CA
  12. 2.2 6km SSW of Walker, CA
  13. 2.2 5km WSW of Walker, CA
  14. 2.0 5km W of Walker, CA
  15. 2.4 6km NW 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 5,600,000 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.