QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

18km NNE of Avalon, CA

· 9.6 km deep · released about 380 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 47 kmLos Angeles County 80 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 2.7 (ml)
Depth
9.6 km below the surface
Felt
no reports yet
Nearest
Orange County, 47 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2985 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 380 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 40,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 29,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 380 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 33.4813, -118.2240. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 47 km (29 mi) WSW of here earthquakes near Orange County
Los Angeles County, CA 80 km (49 mi) S of here earthquakes near Los Angeles County
Ventura County, CA 129 km (80 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

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

  1. 1.6 4km NNW of Signal Hill, CA
  2. 1.9 1km N of Lawndale, CA
  3. 2.0 4km SSW of La Mirada, CA
  4. 2.3 3km SW of La Mirada, CA
  5. 1.6 9km WSW of Hermosa Beach, CA
  6. 1.6 7km SE of San Pedro, CA
  7. 2.4 16km NNE of Avalon, CA
  8. 1.8 7km SE of San Pedro, CA
  9. 2.2 15km NNE of Avalon, CA
  10. 1.7 7km ESE of San Pedro, CA
  11. 1.9 9km SW of Newport Beach, CA
  12. 1.9 10km SW of Newport Beach, CA
  13. 2.1 9km SW of Newport Beach, CA
  14. 1.5 3km WSW of Willowbrook, CA
  15. 2.3 3km W of San Pedro, 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.