QuakeIndex

quarry blast · reviewed by a seismologist

M 1.5ml

13 km S of Primm, NV

· -1.2 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 87 kmSan Bernardino County 101 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 1.5 (ml)
Depth
-1.2 km below the surface
Felt
no reports yet
Nearest
Clark County, 87 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 384 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 35.4932, -115.3958. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Clark County, NV 87 km (54 mi) SSW of here earthquakes near Clark County
San Bernardino County, CA 101 km (62 mi) NE of here earthquakes near San Bernardino County

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

Aftershocks so far

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

  1. 1.7 14 km S of Enterprise, Nevada
  2. 1.6 31 km S of Sandy Valley, Nevada
  3. 1.6 45 km SSE of Sandy Valley, Nevada
  4. 1.5 24 km ENE of Kelso, CA
  5. 1.5 18 km E of Goodsprings, Nevada
  6. 1.6 36 km SSE of Sandy Valley, Nevada
  7. 2.0 32 km SSE of Goodsprings, Nevada
  8. 2.0 27 km E of Goodsprings, Nevada
  9. 1.5 44 km S of Sandy Valley, Nevada
  10. 2.1 14 km SSE of Enterprise, Nevada
  11. 1.6 42 km S of Goodsprings, Nevada
  12. 1.6 35 km S of Sandy Valley, Nevada
  13. 2.6 20 km SW of Primm, NV

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.