QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

8 km S of Yucca Valley, CA

· 8.1 km deep · released about 17 lb of TNT

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10 km30 km60 km120 km N Riverside County 53 kmSan Bernardino County 94 kmSan Diego County 117 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
8.1 km below the surface
Felt
no reports yet
Nearest
Riverside County, 53 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 885 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 17 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 5.8 870,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 620,000× the energy of this one
  3. Around the size people start to feel M 3.0 55× the energy of this one
  4. This earthquake M 1.8 about 17 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 34.0385, -116.4380. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 53 km (33 mi) NW of here earthquakes near Riverside County
San Bernardino County, CA 94 km (58 mi) SSW of here earthquakes near San Bernardino County
San Diego County, CA 117 km (73 mi) NNE of here earthquakes near San Diego County
Imperial County, CA 150 km (93 mi) NW of here earthquakes near Imperial County

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

Aftershocks so far

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

  1. 1.9 4 km NNE of Beaumont, CA
  2. 2.5 3 km SW of Banning, CA
  3. 1.5 7 km NNE of Beaumont, CA
  4. 1.7 4 km NNE of Beaumont, CA
  5. 1.9 6 km N of Beaumont, CA
  6. 2.4 15 km E of Desert Hot Springs, CA
  7. 1.8 29 km NNE of Joshua Tree, CA
  8. 1.7 15 km E of Desert Hot Springs, CA
  9. 1.9 4 km NNE of Beaumont, CA
  10. 2.7 16 km N of Indio, CA
  11. 2.2 5 km NE of Cabazon, CA
  12. 2.5 7 km S of Banning, CA
  13. 1.8 1 km WSW of Banning, CA
  14. 1.8 9 km SW of Morongo Valley, CA
  15. 1.7 23 km SSE of Twentynine Palms, 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 4.5 on 2018-05-08 — it released about 9,400 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.