QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

20 km ESE of Yosemite Valley, CA

· 1.7 km deep · released about 54 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 46 kmMariposa County 52 kmTuolumne County 63 kmMadera County 68 kmAlpine County 107 kmFresno County 111 kmCalaveras County 117 kmMineral County 120 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
1.7 km below the surface
Felt
no reports yet
Nearest
Mono County, 46 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 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 54 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 5.8 280,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 54 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 37.7293, -119.3490. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 46 km (29 mi) WSW of here earthquakes near Mono County
Mariposa County, CA 52 km (33 mi) ENE of here earthquakes near Mariposa County
Tuolumne County, CA 63 km (39 mi) ESE of here earthquakes near Tuolumne County
Madera County, CA 68 km (42 mi) NNE of here earthquakes near Madera County
Alpine County, CA 107 km (66 mi) SSE of here earthquakes near Alpine County
Fresno County, CA 111 km (69 mi) NNE of here earthquakes near Fresno County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 1.6 14 km SE of Yosemite Valley, CA
  2. 2.1 16 km SE of Yosemite Valley, CA
  3. 2.2 22 km SE of Yosemite Valley, CA
  4. 1.9 20 km ENE of Wawona, California
  5. 1.5 12 km SE of Yosemite Valley, CA
  6. 2.0 22 km SE of Yosemite Valley, CA
  7. 1.9 12 km S of Mammoth Lakes, CA
  8. 2.6 17 km SSE of Mammoth Lakes, CA
  9. 2.1 12 km NE of Lee Vining, CA
  10. 1.6 9 km WSW of Mammoth Lakes, CA
  11. 1.6 5 km NE of Oakhurst, CA
  12. 1.7 12 km SE of Mammoth Lakes, CA
  13. 1.6 5 km NE of Oakhurst, CA
  14. 2.8 16 km SSE of Mammoth Lakes, CA
  15. 1.9 15 km SE of Mammoth Lakes, 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 2,300 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.