QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

2km SSW of Encinitas, CA

· 13 km deep · released about 180 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 49 kmOrange County 85 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 2.5 (ml)
Depth
13 km below the surface
Felt
65 reports · strongest reported intensity IV
Nearest
San Diego County, 49 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2150 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 65 people have reported feeling it to USGS.

How big was it?

This earthquake released about 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 83,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 59,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.2× the energy of this one
  4. This earthquake M 2.5 about 180 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 33.0187, -117.3050. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 49 km (31 mi) W of here earthquakes near San Diego County
Orange County, CA 85 km (53 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

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

  1. 1.6 6km NNW of Lakeside, CA
  2. 1.8 10km NNW of Alpine, CA
  3. 1.9 10km SSW of San Diego Country Estates, CA
  4. 2.0 14km SW of Coronado, CA
  5. 1.6 9km W of Palomar Observatory, CA
  6. 1.6 9km W of Palomar Observatory, CA
  7. 2.1 10km W of Palomar Observatory, CA
  8. 1.6 6km NNW of Lakeside, CA
  9. 1.9 30km WSW of La Jolla, CA
  10. 2.5 12km WSW of Coronado, CA
  11. 2.0 3km SSW of La Jolla, CA
  12. 1.9 25km WSW of Carlsbad, CA
  13. 2.1 26km WSW of Carlsbad, CA
  14. 3.1 26km WSW of Carlsbad, CA
  15. 1.6 13km SW of Coronado, 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.