QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

16km W of Camp Pendleton South, CA

· 14 km deep · released about 380 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 53 kmSan Diego County 76 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
14 km below the surface
Felt
8 reports · strongest reported intensity III
Nearest
Orange County, 53 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2289 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 8 people have reported feeling it to USGS.

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 33.2318, -117.5563. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 53 km (33 mi) SSE of here earthquakes near Orange County
San Diego County, CA 76 km (47 mi) WNW of here earthquakes near San Diego County
Los Angeles County, CA 126 km (78 mi) SSE of here earthquakes near Los Angeles County

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

Aftershocks so far

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

  1. 1.7 38km WSW of Carlsbad, CA
  2. 2.0 38km WSW of Carlsbad, CA
  3. 1.8 28km SW of Dana Point, CA
  4. 2.5 22km W of La Jolla, CA
  5. 1.5 38km W of La Jolla, CA
  6. 1.9 23km WSW of Dana Point, CA
  7. 1.7 16km S of San Clemente, CA
  8. 1.8 39km WSW of Carlsbad, CA
  9. 1.6 29km WSW of Camp Pendleton South, CA
  10. 2.0 30km SW of Dana Point, CA
  11. 1.7 30km SW of Dana Point, CA
  12. 2.1 39km WSW of Encinitas, CA
  13. 1.9 13km W of Carlsbad, CA
  14. 2.7 43km WSW of Encinitas, CA
  15. 1.8 2km WNW of Murrieta, 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.