QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

2km S of San Pasqual, CA

· 16 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 18 kmOrange County 102 kmRiverside County 115 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 2.3 (ml)
Depth
16 km below the surface
Felt
160 reports · strongest reported intensity III
Nearest
San Diego County, 18 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2984 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 160 people have reported feeling it to USGS.

How big was it?

This earthquake released about 82 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 82 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 33.0715, -116.9557. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 18 km (11 mi) WNW of here earthquakes near San Diego County
Orange County, CA 102 km (63 mi) SE of here earthquakes near Orange County
Riverside County, CA 115 km (71 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

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

  1. 2.0 9km NE of Aguanga, CA
  2. 1.7 8km NE of Aguanga, CA
  3. 2.4 8km NE of Aguanga, CA
  4. 2.7 8km NE of Aguanga, CA
  5. 1.6 9km E of Pala, CA
  6. 2.0 4km W of Palomar Observatory, CA
  7. 1.6 9km NE of Aguanga, CA
  8. 1.5 9km NE of Aguanga, CA
  9. 1.8 11km ENE of Aguanga, CA
  10. 1.8 8km NE of Aguanga, CA
  11. 1.5 10km ENE of Aguanga, CA
  12. 2.5 8km NE of Aguanga, CA
  13. 2.9 8km NE of Aguanga, CA
  14. 1.8 14km NE of Julian, 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.