QuakeIndex

quarry blast · reviewed by a seismologist

M 2.3ml

20km SW of Primm, NV

· -1.3 km deep · released about 79 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 91 kmClark County 95 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
-1.3 km below the surface
Felt
no reports yet
Nearest
San Bernardino County, 91 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2221 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 79 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 5.8 190,000× 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 79 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 35.4703, -115.5245. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 91 km (56 mi) NE of here earthquakes near San Bernardino County
Clark County, NV 95 km (59 mi) SSW of here earthquakes near Clark County

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

Aftershocks so far

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

  1. 1.6 31 km S of Sandy Valley, Nevada
  2. 1.6 45 km SSE of Sandy Valley, Nevada
  3. 1.5 24 km ENE of Kelso, CA
  4. 1.5 18 km E of Goodsprings, Nevada
  5. 1.6 36 km SSE of Sandy Valley, Nevada
  6. 2.0 32 km SSE of Goodsprings, Nevada
  7. 2.0 27 km E of Goodsprings, Nevada
  8. 1.5 44 km S of Sandy Valley, Nevada
  9. 1.6 42 km S of Goodsprings, Nevada
  10. 1.6 35 km S of Sandy Valley, Nevada
  11. 2.6 20 km SW of Primm, NV
  12. 1.5 13 km S of Primm, NV
  13. 1.8 32 km SW of Sandy Valley, Nevada
  14. 1.8 2 km NNE of Goodsprings, Nevada
  15. 1.6 17 km ENE of Baker, California

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.