QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

Earthquake near Tehachapi, CA

No earthquake was likely felt in Tehachapi in the 24 hours to 12:16 pm PST (20:16 UTC). The last one was M 4.3, 61 km (38 mi) ENE, at 9:40 am PDT on 13 July 2026, estimated intensity III (weak) in town; 1,090 felt reports to USGS. Every earthquake near Tehachapi

This page: a magnitude 1.9 earthquake was recorded 23 km (15 mi) north-northwest of Tehachapi, CA, at 4:15 pm PDT on 30 June 2021 (23:15 UTC), 3.9 km deep.

USGS: 24km NNW of Tehachapi, CA

42 km (26 mi) E of Bakersfield, CA · 145 km (90 mi) N of Los Angeles, CA

4:15 pm PDT, Jun 30, 2021 · · 3.9 km deep · released about 19 lb of TNT

10 km30 km60 km120 km N Kern County 14 kmTulare County 103 kmVentura County 118 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
4:15 pm PDT on 30 June 2021 ()
Where
23 km (15 mi) north-northwest of Tehachapi, CA · earthquakes near Tehachapi
Magnitude
M 1.9 (ml)
Depth
3.9 km below the surface
Felt
no reports yet
Nearest
Kern County, 14 km WNW
Nearest mapped fault
Edison fault, 6 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 1960 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 14 km (9 mi) from the epicentre. In Tehachapi, 23 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: Bear Valley Springs, Golden Hills, Arvin, Stallion Springs.

How big was it?

This earthquake released about 19 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 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 20 earthquakes of M5 or more within 50 km; the five largest:

  1. 5.8 Near Bakersfield, California · 21 km W of this epicentre
  2. 5.7 11km N of Lamont, CA · 29 km W of this epicentre
  3. 5.7 12km NW of California City, California · 48 km ESE of this epicentre
  4. 5.6 19km N of Tehachapi, CA · 10 km E of this epicentre
  5. 5.6 14km NNW of Tehachapi, CA · 10 km SE 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 35.3165, -118.5748. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Kern County, CA 14 km (9 mi) WNW earthquakes near Kern County
Tulare County, CA 103 km (64 mi) N earthquakes near Tulare County
Ventura County, CA 118 km (73 mi) SSW earthquakes near Ventura County
Kings County, CA 140 km (87 mi) NW earthquakes near Kings County

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

Aftershocks so far

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

  1. 1.6 25km SE of Bodfish, CA
  2. 2.6 25km SE of Bodfish, CA
  3. 1.6 12km SE of Tehachapi, CA
  4. 1.5 17km ENE of Lebec, CA
  5. 1.8 13km SE of Bodfish, CA
  6. 1.6 22km NNW of Tehachapi, CA
  7. 1.8 13km W of Mojave, CA
  8. 1.6 13km SE of Bodfish, CA
  9. 1.9 12km ESE of Bodfish, CA
  10. 1.9 10km SE of Bodfish, CA
  11. 3.7 14km W of Mojave, CA
  12. 2.0 15km NNW of Tehachapi, CA
  13. 1.8 16km NW of Tehachapi, CA
  14. 1.9 12km SE of Bodfish, CA
  15. 1.6 13km 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.