QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

4km S of Marina del Rey, CA

· 13 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 32 kmOrange County 69 kmVentura County 78 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 2.1 (ml)
Depth
13 km below the surface
Felt
35 reports · strongest reported intensity IV
Nearest
Los Angeles County, 32 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2788 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 35 people have reported feeling it to USGS.

How big was it?

This earthquake released about 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 33.9467, -118.4440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 32 km (20 mi) SSW of here earthquakes near Los Angeles County
Orange County, CA 69 km (43 mi) WNW of here earthquakes near Orange County
Ventura County, CA 78 km (49 mi) SE of here earthquakes near Ventura County

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

Aftershocks so far

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

  1. 2.6 2km NNE of Gardena, CA
  2. 2.5 13km S of Rancho Palos Verdes, CA
  3. 1.6 9km S of Malibu Beach, CA
  4. 1.6 9km S of Malibu Beach, CA
  5. 1.9 1km N of Caltech, Pasadena, CA
  6. 1.9 2km SSE of View Park-Windsor Hills, CA
  7. 1.9 7km SSW of Agoura Hills, CA
  8. 1.5 0km NNW of Paramount, CA
  9. 1.9 1km N of Huntington Park, CA
  10. 1.8 1km SW of Norwalk, CA
  11. 1.8 1km ENE of Gardena, CA
  12. 1.8 6km WSW of Huntington Beach, CA
  13. 1.6 2km NNW of Valinda, CA
  14. 1.7 1km ENE of Bellflower, CA
  15. 1.9 2km SSW of La Canada Flintridge, 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.