QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

44km SE of Avalon, CA

· 13 km deep · released about 160 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 68 kmSan Diego County 112 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 2.5 (ml)
Depth
13 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Orange County, 68 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1330 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 8 people have reported feeling it to USGS.

How big was it?

This earthquake released about 160 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 92,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 65,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.8× the energy of this one
  4. This earthquake M 2.5 about 160 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 33.0872, -117.9728. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 68 km (42 mi) SSW of here earthquakes near Orange County
San Diego County, CA 112 km (69 mi) W of here earthquakes near San Diego County

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

Aftershocks so far

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

  1. 1.5 44 km SE of Avalon, CA
  2. 1.9 14 km S of Newport Beach, CA
  3. 1.7 46 km ENE of San Clemente Is. (SE tip), CA
  4. 2.7 22 km SSW of Newport Beach, CA
  5. 2.2 21 km E of Avalon, CA
  6. 2.2 45 km WSW of Carlsbad, CA
  7. 1.8 28 km WSW of Carlsbad, CA
  8. 1.6 29 km SSW of San Clemente, CA
  9. 2.0 6 km S of Avalon, CA
  10. 1.5 31 km WSW of Camp Pendleton South, CA
  11. 2.0 43 km ENE of San Clemente Is. (SE tip), CA
  12. 1.6 43 km ENE of San Clemente Is. (SE tip), CA
  13. 2.0 42 km ENE of San Clemente Is. (SE tip), CA
  14. 2.6 42 km ENE of San Clemente Is. (SE tip), CA
  15. 1.8 37 km W of La Jolla, 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.