QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

24km E of Pine Valley, CA

· 8.1 km deep · released about 9.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 51 kmImperial County 89 kmRiverside County 103 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 1.7 (ml)
Depth
8.1 km below the surface
Felt
no reports yet
Nearest
San Diego County, 51 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3377 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 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 32.8340, -116.2775. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 51 km (32 mi) ESE of here earthquakes near San Diego County
Imperial County, CA 89 km (55 mi) WSW of here earthquakes near Imperial County
Riverside County, CA 103 km (64 mi) SSW of here earthquakes near Riverside County

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

Aftershocks so far

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

  1. 2.4 12km ENE of Ocotillo Wells, CA
  2. 2.5 12km ENE of Ocotillo Wells, CA
  3. 1.9 8km ENE of Ocotillo Wells, CA
  4. 2.7 9km ENE of Ocotillo Wells, CA
  5. 2.1 26km SE of Campo, CA
  6. 1.8 7km E of Borrego Springs, CA
  7. 1.6 17km SSW of Ocotillo Wells, CA
  8. 2.4 11km ESE of Ocotillo Wells, CA
  9. 1.6 11km ESE of Ocotillo Wells, CA
  10. 1.6 16km ESE of Julian, CA
  11. 1.6 16km ESE of Julian, CA
  12. 1.8 27km SSW of Ocotillo Wells, CA
  13. 1.8 27km SSW of Ocotillo Wells, CA
  14. 2.6 10km SE of Ocotillo Wells, CA
  15. 1.5 16km ENE of Ocotillo, 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.