QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

25 km SE of San Clemente Is. (SE tip), CA

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

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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
28 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Orange County, 121 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 603 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 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 32.6395, -118.1877. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 121 km (75 mi) SSW of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 2.2 48 km WSW of Encinitas, CA
  2. 2.5 12 km SSE of San Clemente Is. (SE tip), CA
  3. 2.1 69 km SE of San Clemente Is. (SE tip), CA
  4. 1.7 40 km ENE of San Clemente Is. (SE tip), CA
  5. 1.6 48 km ENE of San Clemente Is. (SE tip), CA
  6. 1.9 33 km ENE of San Clemente Is. (SE tip), CA
  7. 2.4 33 km ENE of San Clemente Is. (SE tip), CA
  8. 2.5 32 km ENE of San Clemente Is. (SE tip), CA
  9. 2.9 10 km WNW of San Clemente Is. (SE tip), CA
  10. 1.8 45 km W of La Jolla, CA
  11. 2.0 63 km WSW of Coronado, CA
  12. 1.9 27 km NE of San Clemente Is. (SE tip), CA
  13. 3.2 72 km SE of San Clemente Is. (SE tip), CA
  14. 2.6 68 km SE of San Clemente Is. (SE tip), CA
  15. 2.6 25 km ESE of San Clemente Is. (SE tip), 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 4.4 on 2024-01-15 — it released about 130 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.