QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

11km SW of Lamont, CA

· 13 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 30 kmVentura County 93 kmTulare County 118 kmSanta Barbara County 120 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 3.1 (ml)
Depth
13 km below the surface
Felt
15 reports · strongest reported intensity III
Nearest
Kern County, 30 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1499 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 15 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 260,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,200× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× more

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 35.1837, -118.9880. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 30 km (18 mi) SW of here earthquakes near Kern County
Ventura County, CA 93 km (58 mi) N of here earthquakes near Ventura County
Tulare County, CA 118 km (73 mi) S of here earthquakes near Tulare County
Santa Barbara County, CA 120 km (74 mi) NE of here earthquakes near Santa Barbara County
Kings County, CA 124 km (77 mi) SE of here earthquakes near Kings County
Los Angeles County, CA 128 km (80 mi) NNW of here earthquakes near Los Angeles County

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

Aftershocks so far

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

  1. 1.8 13km NNW of Grapevine, CA
  2. 1.9 27km SSW of Bodfish, CA
  3. 1.8 14km SSW of Maricopa, CA
  4. 1.9 6km S of Frazier Park, CA
  5. 2.4 4km S of Frazier Park, CA
  6. 1.9 10km WSW of Grapevine, CA
  7. 2.2 12km NNW of Grapevine, CA
  8. 1.7 15km NE of Lebec, CA
  9. 1.6 10km NNW of Grapevine, CA
  10. 1.8 12km NNW of Grapevine, CA
  11. 1.6 14km W of Tehachapi, CA
  12. 1.9 12km NNW of Grapevine, CA
  13. 2.7 13km NNW of Grapevine, CA
  14. 1.8 12km NNW of Grapevine, CA
  15. 1.9 13km NNW of Grapevine, 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

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