QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

17km S of Fort Irwin, CA

· 7.6 km deep · released about 9.6 lb of TNT

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10 km30 km60 km120 km N San Bernardino County 53 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 1.7 (ml)
Depth
7.6 km below the surface
Felt
no reports yet
Nearest
San Bernardino County, 53 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2543 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 9.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 35.1087, -116.6775. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 53 km (33 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

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

  1. 3.5 23km NW of Ludlow, CA
  2. 2.1 24km W of Ludlow, CA
  3. 1.8 27km NW of Ludlow, CA
  4. 1.6 20km ENE of Barstow, CA
  5. 1.6 22km ENE of Barstow, CA
  6. 1.8 6km ENE of Barstow, CA
  7. 2.6 25km WNW of Ludlow, CA
  8. 1.6 32km E of Barstow, CA
  9. 2.0 17km S of Fort Irwin, CA
  10. 1.8 39km NNW of Barstow, CA
  11. 1.8 22km NNE of Barstow, CA
  12. 1.5 40km NNW of Barstow, CA
  13. 3.9 40km NNW of Barstow, CA
  14. 1.5 14km S of Fort Irwin, CA
  15. 1.6 14km S of Fort Irwin, 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.