QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

15km WSW of Toms Place, CA

· 7.5 km deep · released about 1,500 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 46 kmMadera County 87 kmMariposa County 95 kmFresno County 110 kmEsmeralda County 110 kmTuolumne County 115 kmMineral 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 3.1 (ml)
Depth
7.5 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Mono County, 46 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1709 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,500 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 230,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,200× the energy of this one
  4. This earthquake M 3.1 about 1,500 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.6× more

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 37.5060, -118.8358. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 46 km (28 mi) S of here earthquakes near Mono County
Madera County, CA 87 km (54 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 95 km (59 mi) E of here earthquakes near Mariposa County
Fresno County, CA 110 km (68 mi) NE of here earthquakes near Fresno County
Esmeralda County, NV 110 km (68 mi) WSW of here earthquakes near Esmeralda County
Tuolumne County, CA 115 km (71 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

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

  1. 2.0 17km WSW of Toms Place, CA
  2. 1.5 15km WSW of Toms Place, CA
  3. 1.7 16km WSW of Toms Place, CA
  4. 2.3 17km WSW of Toms Place, CA
  5. 1.8 15km SW of Toms Place, CA
  6. 1.6 2km WNW of Dixon Lane-Meadow Creek, CA
  7. 1.5 31km SSW of Round Valley, CA
  8. 2.4 1km ENE of Bishop, CA
  9. 1.9 17km WSW of Toms Place, CA
  10. 2.4 6km N of Round Valley, CA
  11. 2.5 16km WSW of Toms Place, CA
  12. 1.8 9km NNW of West Bishop, CA
  13. 2.6 9km ENE of Round Valley, CA
  14. 2.0 30km ENE of Shaver Lake, CA
  15. 1.6 17km 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 83 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.