QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

5 km NNE of Round Valley, California

· 11 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mono County 56 kmEsmeralda County 90 kmMadera County 108 kmMineral County 117 kmMariposa County 119 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 1.8 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Mono County, 56 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3009 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 37.4695, -118.5730. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mono County, CA 56 km (35 mi) SSE of here earthquakes near Mono County
Esmeralda County, NV 90 km (56 mi) WSW of here earthquakes near Esmeralda County
Madera County, CA 108 km (67 mi) ENE of here earthquakes near Madera County
Mineral County, NV 117 km (73 mi) S of here earthquakes near Mineral County
Mariposa County, CA 119 km (74 mi) E of here earthquakes near Mariposa County
Fresno County, CA 124 km (77 mi) NE of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.8 9 km SSW of Mammoth Lakes, California
  2. 1.5 10 km WSW of Aspen Springs, California
  3. 1.7 12 km SE of Mammoth Lakes, California
  4. 1.5 12 km SE of Mammoth Lakes, California
  5. 2.4 3 km ENE of Dixon Lane-Meadow Creek, California
  6. 1.8 12 km SE of Mammoth Lakes, California
  7. 1.8 11 km WSW of Aspen Springs, California
  8. 1.6 4 km SSE of Mesa, California
  9. 2.9 26 km S of Mammoth Lakes, California
  10. 1.7 26 km S of Mammoth Lakes, California
  11. 1.9 5 km WNW of Round Valley, California
  12. 1.6 26 km WSW of Wilkerson, California
  13. 1.6 27 km WSW of Wilkerson, California
  14. 1.6 14 km SW of Aspen Springs, California
  15. 2.3 11 km WNW of Aspen Springs, California

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 30,000 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.