QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

8km SSW of Carlsbad, CA

· 13 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 56 kmOrange County 75 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 1.5 (ml)
Depth
13 km below the surface
Felt
no reports yet
Nearest
San Diego County, 56 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 33.0912, -117.3768. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 56 km (35 mi) W of here earthquakes near San Diego County
Orange County, CA 75 km (47 mi) SSE of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 2.2 28km SW of La Jolla, CA
  2. 1.7 6km NNW of Lakeside, CA
  3. 1.6 42km WSW of Carlsbad, CA
  4. 2.3 45km WSW of Carlsbad, CA
  5. 1.6 47km WSW of Carlsbad, CA
  6. 1.6 9km E of Pala, CA
  7. 1.6 6km NNW of Lakeside, CA
  8. 2.1 5km ESE of Temecula, CA
  9. 1.8 10km ENE of Pala, CA
  10. 1.5 6km NNW of Lakeside, CA
  11. 2.3 2km S of San Pasqual, CA
  12. 1.6 6km NNW of Lakeside, CA
  13. 1.5 6km NNW of Lakeside, CA
  14. 1.8 18km SW of La Jolla, CA
  15. 1.6 6km NNW of Lakeside, 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.