QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

26km SW of Big Pine, CA

· 7.2 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tulare County 91 kmMono County 104 kmFresno County 105 kmMadera County 111 kmInyo County 112 kmEsmeralda County 115 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
7.2 km below the surface
Felt
no reports yet
Nearest
Tulare County, 91 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2505 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 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× 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 37.0220, -118.5172. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tulare County, CA 91 km (57 mi) NNE of here earthquakes near Tulare County
Mono County, CA 104 km (65 mi) SSE of here earthquakes near Mono County
Fresno County, CA 105 km (65 mi) ENE of here earthquakes near Fresno County
Madera County, CA 111 km (69 mi) E of here earthquakes near Madera County
Inyo County, CA 112 km (69 mi) WNW of here earthquakes near Inyo County
Esmeralda County, NV 115 km (71 mi) SW of here earthquakes near Esmeralda County

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

Aftershocks so far

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

  1. 1.6 2km S of Round Valley, CA
  2. 2.4 20km S of Big Pine, CA
  3. 2.1 29km ESE of Big Pine, CA
  4. 1.6 2km NW of Round Valley, CA
  5. 2.4 19km S of Big Pine, CA
  6. 1.9 2km E of Round Valley, CA
  7. 1.5 2km SSW of Bishop, CA
  8. 1.6 5km SE of Round Valley, CA
  9. 1.6 7km ESE of Round Valley, CA
  10. 3.3 6km E of Independence, CA
  11. 1.5 7km SE of Round Valley, CA
  12. 2.2 3km E of Round Valley, CA
  13. 2.1 3km E of Round Valley, CA
  14. 2.7 3km E of Round Valley, CA
  15. 3.4 5km NNW of Round Valley, 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 29,000 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.