QuakeIndex

Earthquake · automatic estimate, may change

M 1.8ml

23km SSW of La Quinta, CA

· 7.5 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 48 kmSan Diego County 61 kmImperial County 112 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
7.5 km below the surface
Felt
no reports yet
Nearest
Riverside County, 48 km NE
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 2623 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 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 33.4887, -116.4355. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 48 km (30 mi) WSW of here earthquakes near Riverside County
San Diego County, CA 61 km (38 mi) NNE of here earthquakes near San Diego County
Imperial County, CA 112 km (70 mi) WNW of here earthquakes near Imperial County

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

Aftershocks so far

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

  1. 1.7 9km SW of Salton City, CA
  2. 1.7 8km NNE of Borrego Springs, CA
  3. 1.6 8km ENE of Julian, CA
  4. 1.7 4km S of Idyllwild, CA
  5. 1.5 12km SSW of Idyllwild, CA
  6. 2.5 5km SSW of Idyllwild, CA
  7. 1.9 12km NE of Indio, CA
  8. 1.7 4km ESE of Lake Henshaw, CA
  9. 1.6 6km SW of Salton City, CA
  10. 1.6 9km SE of Valle Vista, CA
  11. 2.1 4km ENE of Ocotillo Wells, CA
  12. 1.6 8km ESE of Valle Vista, CA
  13. 1.9 11km NE of Ocotillo Wells, CA
  14. 1.8 4km S of Garnet, CA
  15. 1.9 8km ENE of Julian, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.2 on 2016-06-10 — it released about 130,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.