QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

11km WNW of Lake Elsinore, CA

· 9.2 km deep · released about 860 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 32 kmLos Angeles County 93 kmSan Diego County 98 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 3.0 (ml)
Depth
9.2 km below the surface
Felt
159 reports · strongest reported intensity III
Measured shaking
intensity III (ShakeMap)
Nearest
Orange County, 32 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 773 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 159 people have reported feeling it to USGS.

How big was it?

This earthquake released about 860 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 390,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 860 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 33.7077, -117.4373. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 32 km (20 mi) E of here earthquakes near Orange County
Los Angeles County, CA 93 km (58 mi) SE of here earthquakes near Los Angeles County
San Diego County, CA 98 km (61 mi) NW 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

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

  1. 1.5 5 km SE of Home Gardens, CA
  2. 2.1 4 km SE of Loma Linda, CA
  3. 2.4 2 km ESE of Loma Linda, CA
  4. 1.7 3 km ENE of Colton, CA
  5. 1.6 4 km SE of Home Gardens, CA
  6. 1.5 2 km NNW of Fontana, CA
  7. 2.1 9 km WSW of Corona, CA
  8. 3.1 2 km NW of Fontana, CA
  9. 1.6 8 km SSE of Home Gardens, CA
  10. 1.6 4 km ESE of Home Gardens, CA
  11. 1.7 8 km SSW of Calimesa, CA
  12. 1.6 5 km S of Redlands, CA
  13. 1.6 2 km N of Loma Linda, CA
  14. 1.7 5 km SSE of Home Gardens, CA
  15. 1.6 2 km NNW of Fontana, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.