QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

14km N of Avalon, CA

· 5.8 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 55 kmLos Angeles County 82 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 2.3 (ml)
Depth
5.8 km below the surface
Felt
no reports yet
Nearest
Orange County, 55 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2280 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 33.4640, -118.3187. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 55 km (34 mi) WSW of here earthquakes near Orange County
Los Angeles County, CA 82 km (51 mi) S of here earthquakes near Los Angeles County
Ventura County, CA 125 km (77 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

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

  1. 2.5 5km WSW of Hermosa Beach, CA
  2. 3.5 5km WSW of Hermosa Beach, CA
  3. 1.7 6km WSW of Manhattan Beach, CA
  4. 2.6 7km WSW of Hermosa Beach, CA
  5. 1.6 3km ESE of Garden Grove, CA
  6. 2.3 30 km WSW of Avalon, California
  7. 1.8 31km E of Avalon, CA
  8. 2.0 3km SW of San Pedro, CA
  9. 1.9 6km W of Manhattan Beach, CA
  10. 1.7 5km WSW of Hermosa Beach, CA
  11. 2.4 6km WSW of Manhattan Beach, CA
  12. 2.6 17km S of San Pedro, CA
  13. 1.6 1km E of Rolling Hills, CA
  14. 2.2 22km SSE of San Pedro, CA
  15. 1.7 20km SSW of Rancho Palos Verdes, 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.