QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Lamont, CA

No earthquake was likely felt in Lamont in the 24 hours to 7:39 am PST (15:39 UTC). The last one was M 2.8, 10 km (6 mi) SW, at 2:35 am PDT on 29 July 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near Lamont

This page: a magnitude 1.5 earthquake was recorded 21 km (13 mi) northeast of Lamont, CA, at 4:09 am PST on 27 November 2023 (12:09 UTC), 6.9 km deep.

USGS: 22 km NE of Lamont, CA

27 km (17 mi) E of Bakersfield, CA

4:09 am PST, Nov 27, 2023 · · 6.9 km deep · released about 5.6 lb of TNT

10 km30 km60 km120 km N Kern County 6 kmTulare County 92 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
4:09 am PST on 27 November 2023 ()
Where
21 km (13 mi) northeast of Lamont, CA · earthquakes near Lamont
Magnitude
M 1.5 (ml)
Depth
6.9 km below the surface
Felt
no reports yet
Nearest
Kern County, 6 km SSE
Nearest mapped fault
Edison fault, 10 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1079 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 7 km (4 mi) from the epicentre. In Lamont, 21 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Arvin, Weedpatch, Bakersfield, Oildale, Bear Valley Springs.

How big was it?

This earthquake released about 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.0 on 2021-08-27 — about 5,400 times the energy of this one.

Before 2016, the USGS record lists 22 earthquakes of M5 or more within 50 km; the five largest:

  1. 5.8 Near Bakersfield, California · 12 km SSW of this epicentre
  2. 5.7 11km N of Lamont, CA · 14 km WSW of this epicentre
  3. 5.6 19km N of Tehachapi, CA · 28 km ESE of this epicentre
  4. 5.6 14km NNW of Tehachapi, CA · 28 km SE of this epicentre
  5. 5.5 13km ENE of Grapevine, CA · 46 km S of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 35.3992, -118.7503. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kern County, CA 6 km (4 mi) SSE earthquakes near Kern County
Tulare County, CA 92 km (57 mi) N earthquakes near Tulare County
Ventura County, CA 121 km (75 mi) SSW earthquakes near Ventura County
Kings County, CA 122 km (76 mi) NW earthquakes near Kings County
Santa Barbara County, CA 152 km (94 mi) SW earthquakes near Santa Barbara County

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

Aftershocks so far

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

  1. 2.2 25 km SSW of Bodfish, CA
  2. 2.3 23 km NNW of Tehachapi, CA
  3. 1.7 25 km S of Bodfish, CA
  4. 1.6 14 km ENE of Lake Isabella, CA
  5. 1.6 14 km ENE of Lake Isabella, CA
  6. 3.3 14 km ESE of Wofford Heights, CA
  7. 2.1 14 km ESE of Wofford Heights, CA
  8. 1.6 20 km NNW of Tehachapi, CA
  9. 1.6 26 km NE of Lamont, CA
  10. 1.8 23 km NNW of Tehachapi, CA
  11. 1.5 25 km NE of Arvin, CA
  12. 1.8 33 km SE of Bodfish, CA
  13. 1.7 25 km NE of Arvin, CA
  14. 2.3 25 km NE of Arvin, CA
  15. 1.9 12 km SE of Bodfish, 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.