QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4ml

14km WSW of Toms Place, CA

· 4.9 km deep · released about 2.2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 44 kmMadera County 89 kmMariposa County 96 kmEsmeralda County 109 kmFresno County 112 kmTuolumne County 114 kmMineral County 116 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 3.4 (ml)
Depth
4.9 km below the surface
Felt
27 reports · strongest reported intensity V
Measured shaking
intensity III (ShakeMap)
Nearest
Mono County, 44 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1877 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 27 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 78,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,500× the energy of this one
  4. This earthquake M 3.4 about 2.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.6× 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 37.5227, -118.8263. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 44 km (27 mi) S of here earthquakes near Mono County
Madera County, CA 89 km (55 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 96 km (60 mi) E of here earthquakes near Mariposa County
Esmeralda County, NV 109 km (68 mi) WSW of here earthquakes near Esmeralda County
Fresno County, CA 112 km (70 mi) NE of here earthquakes near Fresno County
Tuolumne County, CA 114 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

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

  1. 1.6 40km NNE of Toms Place, CA
  2. 2.2 2km SSE of Round Valley, CA
  3. 2.2 9km WSW of Toms Place, CA
  4. 1.6 17 km NNW of Sunny Slopes, California
  5. 1.5 3km SSE of Bishop, CA
  6. 1.9 1km SSE of Dixon Lane-Meadow Creek, CA
  7. 1.6 22km NE of North Fork, CA
  8. 1.6 16km WSW of Toms Place, CA
  9. 1.6 0km ENE of Bishop, CA
  10. 1.9 9km WSW of Round Valley, CA
  11. 1.6 12km SE of Mammoth Lakes, CA
  12. 1.8 22km SSE of Mammoth Lakes, CA
  13. 2.4 38km NNE of Toms Place, CA
  14. 2.1 6km ESE of Round Valley, CA
  15. 2.1 7km E of Round Valley, 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 29 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.