QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

9km SSE of Mammoth Lakes, CA

· 8.9 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 39 kmMadera County 83 kmMariposa County 87 kmTuolumne County 104 kmFresno County 110 kmMineral County 115 kmEsmeralda 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 2.2 (md)
Depth
8.9 km below the surface
Felt
no reports yet
Nearest
Mono County, 39 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1476 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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 37.5657, -118.9265. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 39 km (24 mi) S of here earthquakes near Mono County
Madera County, CA 83 km (51 mi) ENE of here earthquakes near Madera County
Mariposa County, CA 87 km (54 mi) E of here earthquakes near Mariposa County
Tuolumne County, CA 104 km (65 mi) ESE of here earthquakes near Tuolumne County
Fresno County, CA 110 km (69 mi) NE of here earthquakes near Fresno County
Mineral County, NV 115 km (71 mi) SSW of here earthquakes near Mineral 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. 1.7 17km NNW of Dixon Lane-Meadow Creek, CA
  2. 2.2 17km NNW of Dixon Lane-Meadow Creek, CA
  3. 2.6 7km N of Round Valley, CA
  4. 1.7 4km SW of Toms Place, CA
  5. 2.6 6km E of Round Valley, CA
  6. 2.6 6km E of Round Valley, CA
  7. 1.7 6km E of Mammoth Lakes, CA
  8. 1.6 6km WNW of Round Valley, CA
  9. 1.5 18km SSE of Mammoth Lakes, CA
  10. 2.2 4km WNW of Dixon Lane-Meadow Creek, CA
  11. 2.5 24km ENE of Oakhurst, CA
  12. 1.5 32km NE of North Fork, CA
  13. 1.5 6km E of Mammoth Lakes, CA
  14. 1.5 6km E of Mammoth Lakes, CA
  15. 1.7 29km NE of Oakhurst, 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 2,100 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.