QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

7 km N of Bridgeport, CA

Yes. A magnitude 2.0 earthquake was recorded 7 km N of Bridgeport, CA, at 1:27 pm PST on 15 December 2025 (21:27 UTC), 12 km deep.

· 12 km deep · released about 32 lb of TNT

10 km30 km60 km120 km N Mono County 54 kmAlpine County 61 kmMineral County 73 kmDouglas County 73 kmTuolumne County 73 kmLyon County 78 kmCarson City 103 kmMariposa County 103 kmCalaveras County 118 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 2.0 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Mono County, 54 km SSE
Nearest mapped fault
Smith Valley fault, 9 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 320 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 11 km (7 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 32 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 470,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 330,000× the energy of this one
  3. Around the size people start to feel M 3.0 30× the energy of this one
  4. This earthquake M 2.0 about 32 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.

For this area

The largest earthquake within 50 km since 2016 was M 6.0 on 2021-07-08 — about 930,000 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 5.8 3 km NE of Mono City, California · 30 km SSE of this epicentre
  2. 5.2 23 km S of Walker, California · 25 km W of this epicentre
  3. 5.2 21 km S of Hawthorne, Nevada · 48 km E of this epicentre
  4. 5.2 31 km ENE of Mono City, California · 40 km ESE of this epicentre
  5. 5.1 23 km E of Bridgeport, California · 22 km ESE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 38.3230, -119.2175. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Mono County, CA 54 km (34 mi) SSE earthquakes near Mono County
Alpine County, CA 61 km (38 mi) WNW earthquakes near Alpine County
Mineral County, NV 73 km (45 mi) ENE earthquakes near Mineral County
Douglas County, NV 73 km (45 mi) NNW earthquakes near Douglas County
Tuolumne County, CA 73 km (46 mi) WSW earthquakes near Tuolumne County
Lyon County, NV 78 km (48 mi) N earthquakes near Lyon 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. 1.6 25 km SSW of Hawthorne, Nevada
  2. 1.7 25 km SSW of Hawthorne, Nevada
  3. 2.6 25 km SSW of Hawthorne, Nevada
  4. 2.1 24 km SSW of Hawthorne, Nevada
  5. 2.6 24 km SSW of Hawthorne, Nevada
  6. 2.4 25 km SSW of Hawthorne, Nevada
  7. 2.1 25 km SSW of Hawthorne, Nevada
  8. 1.6 30 km ENE of Bridgeport, California
  9. 2.2 18 km NE of Dardanelle, CA
  10. 1.9 13 km WNW of Walker, CA
  11. 1.9 27 km SE of Bodie, CA
  12. 2.2 13 km SW of Walker, CA
  13. 1.6 26 km SW of Walker Lake, Nevada
  14. 2.2 5 km SSW of Walker, CA
  15. 2.1 6 km SSW 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.

On USGS

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