QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

15km NE of Barstow, CA

· 2.1 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 69 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
2.1 km below the surface
Felt
no reports yet
Nearest
San Bernardino County, 69 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2001 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 37 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 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 35.0028, -116.9165. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 69 km (43 mi) WNW 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

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

  1. 2.2 8km ENE of Barstow, CA
  2. 2.1 10km E of Barstow, CA
  3. 1.7 16km NNE of Barstow, CA
  4. 1.8 32km SE of Johannesburg, CA
  5. 1.6 20km NNE of Barstow, CA
  6. 1.6 13km NNE of Barstow, CA
  7. 2.2 15km NNE of Barstow, CA
  8. 1.9 23km E of Barstow, CA
  9. 1.8 20km SSE of Barstow, CA
  10. 2.0 18km NE of Barstow, CA
  11. 1.6 29km SE of Johannesburg, CA
  12. 1.5 8km ESE of Barstow, CA
  13. 2.2 29km E of Barstow, CA
  14. 2.4 16km NNE of Barstow, CA
  15. 1.5 29km E 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2020-01-25 — it released about 6,900 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.