QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

3km ENE of Mammoth Lakes, CA

· -1.1 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 31 kmMariposa County 86 kmMadera County 86 kmTuolumne County 99 kmMineral County 107 kmEsmeralda County 116 kmFresno County 117 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 1.9 (md)
Depth
-1.1 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Mono County, 31 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1825 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 37.6455, -118.9428. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 31 km (19 mi) S of here earthquakes near Mono County
Mariposa County, CA 86 km (53 mi) E of here earthquakes near Mariposa County
Madera County, CA 86 km (54 mi) NE of here earthquakes near Madera County
Tuolumne County, CA 99 km (62 mi) ESE of here earthquakes near Tuolumne County
Mineral County, NV 107 km (67 mi) SSW of here earthquakes near Mineral County
Esmeralda County, NV 116 km (72 mi) W of here earthquakes near Esmeralda 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 7km NNW of Lee Vining, CA
  2. 1.6 14km WNW of Toms Place, CA
  3. 1.8 18km WSW of Toms Place, CA
  4. 2.4 17km WSW of Toms Place, CA
  5. 1.9 15km SE of Yosemite Valley, CA
  6. 2.3 42km S of Qualeys Camp, NV
  7. 1.6 32km NE of North Fork, CA
  8. 1.7 42km S of Qualeys Camp, NV
  9. 1.7 8km E of Mammoth Lakes, CA
  10. 3.1 15km WSW of Toms Place, CA
  11. 2.6 15km WSW of Toms Place, CA
  12. 2.0 10km WSW of Toms Place, CA
  13. 2.9 10km WSW of Toms Place, CA
  14. 1.7 6km NNW of West Bishop, CA
  15. 1.6 13km E 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 5.2 on 2020-04-11 — it released about 89,000 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.