QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

9km W of Toms Place, CA

· 8.0 km deep · released about 610 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 42 kmMadera County 94 kmMariposa County 100 kmEsmeralda County 104 kmMineral County 112 kmTuolumne County 117 kmFresno County 117 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 2.9 (md)
Depth
8.0 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Mono County, 42 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1912 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 5 people have reported feeling it to USGS.

How big was it?

This earthquake released about 610 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 25,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 610 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 37.5482, -118.7782. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 42 km (26 mi) SSE of here earthquakes near Mono County
Madera County, CA 94 km (58 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 100 km (62 mi) E of here earthquakes near Mariposa County
Esmeralda County, NV 104 km (65 mi) WSW of here earthquakes near Esmeralda County
Mineral County, NV 112 km (70 mi) SSW of here earthquakes near Mineral County
Tuolumne County, CA 117 km (73 mi) ESE of here earthquakes near Tuolumne 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. 2.9 40km NNE of Toms Place, CA
  2. 1.8 41km NNE of Toms Place, CA
  3. 2.2 39km NNE of Toms Place, CA
  4. 1.7 40km NNE of Toms Place, CA
  5. 2.5 40km NNE of Toms Place, CA
  6. 2.3 40km NNE of Toms Place, CA
  7. 2.0 40km NNE of Toms Place, CA
  8. 2.3 40km NNE of Toms Place, CA
  9. 2.8 39km NNE of Toms Place, CA
  10. 1.7 14km W of Toms Place, CA
  11. 2.2 39km NNE of Toms Place, CA
  12. 2.1 17km WSW of Toms Place, CA
  13. 1.8 2km E of Mammoth Lakes, CA
  14. 1.7 6km SE of Round Valley, CA
  15. 2.5 11km WSW of Toms Place, 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 4.4 on 2020-02-01 — it released about 200 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.