QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

16km SW of Toms Place, CA

· 3.1 km deep · released about 1.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 49 kmMadera County 87 kmMariposa County 97 kmFresno County 109 kmEsmeralda County 110 kmTuolumne 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 3.3 (md)
Depth
3.1 km below the surface
Felt
14 reports · strongest reported intensity III
Nearest
Mono County, 49 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2735 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 14 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 130,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 5,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,000× the energy of this one
  4. This earthquake M 3.3 about 1.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.8× 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 37.4743, -118.8187. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 49 km (31 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 97 km (60 mi) E of here earthquakes near Mariposa County
Fresno County, CA 109 km (67 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 118 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. 1.7 16km SSW of Mammoth Lakes, CA
  2. 1.7 5km E of Mammoth Lakes, CA
  3. 1.5 14km W of Toms Place, CA
  4. 1.6 25km SW of Toms Place, CA
  5. 1.5 10km WSW of Wilkerson, CA
  6. 1.6 10km WSW of Wilkerson, CA
  7. 1.8 14km SW of Toms Place, CA
  8. 1.7 15km SE of Mammoth Lakes, CA
  9. 1.8 15km SE of Mammoth Lakes, CA
  10. 1.6 4km E of Mammoth Lakes, CA
  11. 2.3 13km ESE of Mammoth Lakes, CA
  12. 2.1 27km SSW of Mammoth Lakes, CA
  13. 1.7 24km SW of Toms Place, CA
  14. 2.2 15km SW of Toms Place, CA
  15. 1.5 13km W 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 4.8 on 2016-02-16 — it released about 160 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.