QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

13km N of Cabazon, CA

· 13 km deep · released about 610 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 82 kmOrange County 98 kmSan Bernardino County 108 kmSan Diego County 112 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 2.9 (ml)
Depth
13 km below the surface
Felt
9 reports · strongest reported intensity III
Nearest
Riverside County, 82 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2984 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 9 people have reported feeling it to USGS.

How big was it?

This earthquake released about 610 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 25,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 610 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 34.0312, -116.8077. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 82 km (51 mi) WNW of here earthquakes near Riverside County
Orange County, CA 98 km (61 mi) ENE of here earthquakes near Orange County
San Bernardino County, CA 108 km (67 mi) SSW of here earthquakes near San Bernardino County
San Diego County, CA 112 km (70 mi) N of here earthquakes near San Diego County

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

Aftershocks so far

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

  1. 1.7 6km NW of Highland, CA
  2. 1.7 6km NW of San Jacinto, CA
  3. 2.0 6km NW of Highland, CA
  4. 1.8 13km NNE of Banning, CA
  5. 3.0 4km WNW of Cabazon, CA
  6. 1.6 6km SSW of Redlands, CA
  7. 1.9 6km NW of San Jacinto, CA
  8. 1.5 9km NW of Garnet, CA
  9. 2.0 8km SE of Valle Vista, CA
  10. 1.7 3km SE of Loma Linda, CA
  11. 2.1 10km NNW of Big Bear Lake, CA
  12. 1.6 10km NNW of Big Bear Lake, CA
  13. 1.8 13km NNE of Thousand Palms, CA
  14. 1.5 16km N of Cabazon, CA
  15. 1.5 8km ENE of Cabazon, 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 270 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.