QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

19km E of Boron, CA

· 1.6 km deep · released about 44 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 115 kmSan Bernardino County 116 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 2.1 (ml)
Depth
1.6 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Los Angeles County, 115 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2984 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 34.9827, -117.4440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 115 km (72 mi) NE of here earthquakes near Los Angeles County
San Bernardino County, CA 116 km (72 mi) W of here earthquakes near San Bernardino County
Kern County, CA 124 km (77 mi) ESE of here earthquakes near Kern 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. 1.7 5km NW of Boron, CA
  2. 1.7 16km NNE of Apple Valley, CA
  3. 1.9 5km NNW of Boron, CA
  4. 1.9 5km NNW of Boron, CA
  5. 2.0 8km ESE of Barstow, CA
  6. 1.5 5km NNW of Boron, CA
  7. 1.9 6km N of Boron, CA
  8. 2.6 2km WNW of Adelanto, CA
  9. 2.4 41km E of Johannesburg, CA
  10. 1.5 17km NNE of Apple Valley, CA
  11. 1.7 5km N of Boron, CA
  12. 1.6 15km SW of Johannesburg, CA
  13. 2.1 10km ENE of Barstow, CA
  14. 1.7 5km NNW of Boron, CA
  15. 1.9 13km NE of Barstow, 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.

On USGS

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