QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

2km ENE of Lennox, CA

· 20 km deep · released about 1,100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 29 kmOrange County 59 kmVentura County 87 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
20 km below the surface
Felt
1055 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
Nearest
Los Angeles County, 29 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 423 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1055 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,100 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 6.7 320,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 10,000× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 33.9422, -118.3348. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 29 km (18 mi) SSW of here earthquakes near Los Angeles County
Orange County, CA 59 km (37 mi) WNW of here earthquakes near Orange County
Ventura County, CA 87 km (54 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. 1.8 3km WNW of Lennox, CA
  2. 2.1 0km N of Lennox, CA
  3. 2.3 1km N of Lennox, CA
  4. 1.9 6km WSW of Malibu Beach, CA
  5. 2.4 2km E of Commerce, CA
  6. 1.5 1km SE of Marina del Rey, CA
  7. 1.5 18km S of Malibu Beach, CA
  8. 1.7 16km S of Malibu Beach, CA
  9. 1.9 3km WNW of Lennox, CA
  10. 2.2 1km NNW of Lennox, CA
  11. 1.6 1km SE of Lennox, CA
  12. 2.1 1km SSW of Inglewood, CA
  13. 2.3 1km NE of Lennox, CA
  14. 1.6 2km NW of Lennox, CA
  15. 1.6 2km WSW of Inglewood, 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 180 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.