QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

26km N of Yucca Valley, CA

· 9.4 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 63 kmRiverside County 81 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 1.5 (ml)
Depth
9.4 km below the surface
Felt
1 report
Nearest
San Bernardino County, 63 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 34.3472, -116.4733. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 63 km (39 mi) SSW of here earthquakes near San Bernardino County
Riverside County, CA 81 km (50 mi) NNW of here earthquakes near Riverside County
Orange County, CA 141 km (88 mi) ENE of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 1.6 7km NW of Big Bear City, CA
  2. 2.2 7km NW of Big Bear City, CA
  3. 2.0 11km NNE of Big Bear City, CA
  4. 1.8 8km ESE of Lucerne Valley, CA
  5. 1.8 23km WSW of Ludlow, CA
  6. 1.8 4km N of Big Bear City, CA
  7. 3.0 11km ENE of Cabazon, CA
  8. 2.2 8km SSW of Joshua Tree, CA
  9. 2.0 7km NNW of Big Bear City, CA
  10. 1.8 10km N of Cabazon, CA
  11. 2.0 18km W of Ludlow, CA
  12. 1.7 14km SSE of Big Bear Lake, CA
  13. 2.4 14km E of Desert Hot Springs, CA
  14. 1.9 4km S of Morongo Valley, CA
  15. 1.6 11km S of Joshua Tree, 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 4.5 on 2018-05-08 — it released about 27,000 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.