QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

6km N of La Jolla, CA

· 13 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 49 kmOrange County 97 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
13 km below the surface
Felt
no reports yet
Nearest
San Diego County, 49 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2896 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 32.9032, -117.2823. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 49 km (31 mi) WSW of here earthquakes near San Diego County
Orange County, CA 97 km (61 mi) SSE of here earthquakes near Orange County
Riverside County, CA 150 km (93 mi) SW of here earthquakes near Riverside 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. 1.5 7km SE of Bonita, CA
  2. 2.2 41km WSW of Carlsbad, CA
  3. 1.6 45km WSW of Carlsbad, CA
  4. 1.6 40km WSW of Carlsbad, CA
  5. 1.5 7km SE of Bonita, CA
  6. 1.6 6km SE of Bonita, CA
  7. 1.8 39km WSW of Carlsbad, CA
  8. 1.5 7km WSW of Pala, CA
  9. 1.6 33km WSW of Coronado, CA
  10. 2.1 26km SW of Carlsbad, CA
  11. 1.6 6km ESE of Chula Vista, CA
  12. 1.6 17km SW of La Jolla, CA
  13. 1.6 5km W of Chula Vista, CA
  14. 1.9 13km WSW of Coronado, CA
  15. 1.6 4km NNE of Imperial Beach, 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.