QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

3km NNE of Gardena, CA

· 11 km deep · released about 590 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 31 kmOrange County 55 kmVentura County 92 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
11 km below the surface
Felt
185 reports · strongest reported intensity IV
Measured shaking
intensity V (ShakeMap)
Nearest
Los Angeles County, 31 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3576 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 185 people have reported feeling it to USGS.

How big was it?

This earthquake released about 590 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 26,000× 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 590 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 33.9153, -118.2947. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 31 km (20 mi) S of here earthquakes near Los Angeles County
Orange County, CA 55 km (34 mi) WNW of here earthquakes near Orange County
Ventura County, CA 92 km (57 mi) ESE of here earthquakes near Ventura County

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

Aftershocks so far

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

  1. 1.6 1km ESE of Hawthorne, CA
  2. 1.9 1km SSE of View Park-Windsor Hills, CA
  3. 2.0 10km S of Malibu Beach, CA
  4. 1.6 18km WSW of Manhattan Beach, CA
  5. 2.7 1km E of Brea, CA
  6. 1.9 1km ENE of Brea, CA
  7. 1.5 7km WSW of Huntington Beach, CA
  8. 1.5 11km SW of Huntington Beach, CA
  9. 2.8 2km SSE of Malibu, CA
  10. 1.8 4km ESE of Marina del Rey, CA
  11. 1.7 4km NW of Lake View Terrace, CA
  12. 1.8 2km W of Pasadena, CA
  13. 1.5 10km S of Rancho Palos Verdes, CA
  14. 1.6 2km SSE of Duarte, CA
  15. 2.1 3km W of East Los Angeles, 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.