QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

16km WSW of La Jolla, CA

· 16 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 66 kmOrange County 106 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 1.8 (ml)
Depth
16 km below the surface
Felt
no reports yet
Nearest
San Diego County, 66 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1654 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 32.7718, -117.4188. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 66 km (41 mi) WSW of here earthquakes near San Diego County
Orange County, CA 106 km (66 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

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

  1. 2.0 5 km S of National City, CA
  2. 1.7 21 km WNW of La Jolla, CA
  3. 1.6 29 km WSW of Coronado, CA
  4. 1.6 14 km WSW of Coronado, CA
  5. 1.5 6 km ESE of Bostonia, CA
  6. 1.6 6 km SE of Bostonia, CA
  7. 3.1 41 km WSW of Carlsbad, CA
  8. 1.5 1km ESE of San Ysidro, CA
  9. 1.6 45 km WSW of Coronado, CA
  10. 1.5 5km NE of Rancho San Diego, CA
  11. 1.8 23 km WSW of Encinitas, CA
  12. 1.8 3km NE of Rancho San Diego, CA
  13. 1.5 9km SSW of Escondido, CA
  14. 2.4 45km WSW of Coronado, CA
  15. 1.6 6km E of Chula Vista, 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.