QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

3km S of Gardena, CA

· 14 km deep · released about 130 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 38 kmOrange County 53 kmVentura County 94 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 2.4 (ml)
Depth
14 km below the surface
Felt
226 reports · strongest reported intensity III
Nearest
Los Angeles County, 38 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1464 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 226 people have reported feeling it to USGS.

How big was it?

This earthquake released about 130 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 83,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.4× the energy of this one
  4. This earthquake M 2.4 about 130 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 33.8603, -118.3097. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 38 km (23 mi) S of here earthquakes near Los Angeles County
Orange County, CA 53 km (33 mi) WNW of here earthquakes near Orange County
Ventura County, CA 94 km (58 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

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

  1. 1.6 2km ENE of La Habra, CA
  2. 2.8 15km S of Malibu Beach, CA
  3. 2.9 17km S of Malibu Beach, CA
  4. 3.6 16km S of Malibu Beach, CA
  5. 4.2 16km S of Malibu Beach, CA
  6. 2.3 2km NNE of Sherman Oaks, CA
  7. 1.7 4km NW of Diamond Bar, CA
  8. 2.1 18km S of San Pedro, CA
  9. 1.5 4km NNW of Diamond Bar, CA
  10. 1.7 12km SSW of Rancho Palos Verdes, CA
  11. 1.8 22km SSE of San Pedro, CA
  12. 2.0 4km WSW of Marina del Rey, CA
  13. 2.0 22km SSW of Seal Beach, CA
  14. 1.7 9km S of San Pedro, CA
  15. 2.6 2km S of Placentia, 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 2020-09-19 — it released about 1,500 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.