QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

22km N of Bridgeport, CA

· 10 km deep · released about 190 lb of TNT

10 km30 km60 km120 km N Alpine County 50 kmDouglas County 59 kmLyon County 64 kmMono County 69 kmMineral County 74 kmTuolumne County 78 kmCarson City 89 kmStorey County 112 kmMariposa County 113 km
Distance rings around the epicentre, with the nearest towns at their true direction. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.5 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Alpine County, 50 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2280 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 80,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 57,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.1× the energy of this one
  4. This earthquake M 2.5 about 190 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 38.4508, -119.2657. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alpine County, CA 50 km (31 mi) ESE of here earthquakes near Alpine County
Douglas County, NV 59 km (36 mi) SSE of here earthquakes near Douglas County
Lyon County, NV 64 km (40 mi) S of here earthquakes near Lyon County
Mono County, CA 69 km (43 mi) NNW of here earthquakes near Mono County
Mineral County, NV 74 km (46 mi) W of here earthquakes near Mineral County
Tuolumne County, CA 78 km (48 mi) NE of here earthquakes near Tuolumne County

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

Aftershocks so far

No further earthquakes have been recorded within 50 km since this one.

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 40,000 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.