QuakeIndex

quarry blast · reviewed by a seismologist

M 2.2ml

19km SW of Primm, NV

87 km (54 mi) SSW of Las Vegas, NV

· -1.3 km deep · released about 69 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 91 kmClark County 94 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 2.2 (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 2690 days ago

A magnitude 2.2 earthquake was recorded 19km SW of Primm, NV at 20:29 UTC on 2019-05-22. 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 69 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 220,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 69 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 35.4822, -115.5278. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
San Bernardino County, CA 91 km (57 mi) SW earthquakes near San Bernardino County
Clark County, NV 94 km (58 mi) NNE earthquakes near Clark County

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

Aftershocks so far

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

  1. 1.6 39 km SSE of Sandy Valley, 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. 1.6 42 km S of Goodsprings, Nevada
  11. 1.6 35 km S of Sandy Valley, Nevada
  12. 2.6 20 km SW of Primm, NV
  13. 1.5 13 km S of Primm, NV
  14. 1.8 32 km SW of Sandy Valley, Nevada
  15. 1.8 2 km NNE of Goodsprings, Nevada

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.