QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

3km NNW of Yucca Valley, CA

· 6.7 km deep · released about 1,200 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 61 kmSan Bernardino County 83 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 3.1 (ml)
Depth
6.7 km below the surface
Felt
103 reports · strongest reported intensity IV
Nearest
Riverside County, 61 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1441 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 103 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 280,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,800× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× more

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 34.1387, -116.4442. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 61 km (38 mi) NW of here earthquakes near Riverside County
San Bernardino County, CA 83 km (52 mi) SSW of here earthquakes near San Bernardino County

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

Aftershocks so far

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

  1. 2.4 10km NNW of Idyllwild, CA
  2. 3.5 10km NNW of Idyllwild, CA
  3. 1.8 8km N of Big Bear City, CA
  4. 1.7 5km N of Cabazon, CA
  5. 2.1 8km N of Big Bear City, CA
  6. 2.9 13km N of Indio, CA
  7. 1.9 10km S of Big Bear City, CA
  8. 1.8 11km NNE of Banning, CA
  9. 1.7 17km NNE of Indio, CA
  10. 1.9 7km ESE of Cabazon, CA
  11. 1.6 3km WSW of Yucca Valley, CA
  12. 1.9 36km WSW of Ludlow, CA
  13. 1.5 13km NNE of Thousand Palms, CA
  14. 2.0 19km N of Twentynine Palms, CA
  15. 2.0 13km SE of Big Bear City, 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 130 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.