QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

20km SW of Fort Irwin, CA

· 5.4 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 70 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 1.9 (ml)
Depth
5.4 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
San Bernardino County, 70 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 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 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 35.1528, -116.8627. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 70 km (44 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

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

  1. 1.9 23km SSE of Fort Irwin, CA
  2. 2.0 35km NW of Fort Irwin, CA
  3. 1.6 35km E of Barstow, CA
  4. 1.6 16km NNE of Barstow, CA
  5. 1.8 27km ENE of Barstow, CA
  6. 2.1 33km E of Barstow, CA
  7. 2.1 39km NNW of Barstow, CA
  8. 2.5 34km E of Barstow, CA
  9. 2.1 33km E of Barstow, CA
  10. 3.1 34km E of Barstow, CA
  11. 3.1 33km E of Barstow, CA
  12. 2.1 13km ENE of Barstow, CA
  13. 3.3 26km ENE of Barstow, CA
  14. 2.1 26km ENE of Barstow, CA
  15. 1.9 4km ENE 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.