Earthquake · reviewed by a seismologist
M 1.8ml
Earthquake near Tehachapi, CA
No earthquake was likely felt in Tehachapi in the 24 hours to 5:39 am PST (13:39 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 1.8 earthquake was recorded 24 km (15 mi) north-northwest of Tehachapi, CA, at 10:10 pm PDT on 20 April 2021 (05:10 UTC), 5.0 km deep.
USGS: 24km NNW of Tehachapi, CA
41 km (25 mi) E of Bakersfield, CA · 144 km (90 mi) N of Los Angeles, CA
- When
- 10:10 pm PDT on 20 April 2021 ()
- Where
- 24 km (15 mi) north-northwest of Tehachapi, CA · earthquakes near Tehachapi
- Magnitude
- M 1.8 (ml)
- Depth
- 5.0 km below the surface
- Felt
- no reports yet
- Nearest
- Kern County, 13 km WNW
- Nearest mapped fault
- Edison fault, 4 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 2031 days ago
Earthquake alerts for Tehachapi, CA
Get a notification in this browser when USGS records an earthquake near Tehachapi, CA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 12 km (7 mi) from the epicentre. In Tehachapi, 24 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, Lamont.
How big was it?
This earthquake released about 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
- Magna, Utah 2020 M 5.7 840,000× the energy of this one
- Around the size people start to feel M 3.0 75× the energy of this one
- This earthquake M 1.8 about 13 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 21 earthquakes of M5 or more within 50 km; the five largest:
- 5.8 Near Bakersfield, California · 19 km W of this epicentre
- 5.7 11km N of Lamont, CA · 28 km WNW of this epicentre
- 5.7 12km NW of California City, California · 49 km ESE of this epicentre
- 5.6 19km N of Tehachapi, CA · 11 km E of this epicentre
- 5.6 14km NNW of Tehachapi, CA · 11 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 35.3082, -118.5927. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kern County, CA | 13 km (8 mi) | WNW | earthquakes near Kern County |
| Tulare County, CA | 104 km (64 mi) | N | earthquakes near Tulare County |
| Ventura County, CA | 117 km (72 mi) | SSW | earthquakes near Ventura County |
| Kings County, CA | 139 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
38 earthquakes have been recorded within 50 km since this one.
- 2.0 14km NNW of Grapevine, CA
- 2.2 13km SE of Bodfish, CA
- 2.0 13km SE of Bodfish, CA
- 1.9 12km SE of Bodfish, CA
- 1.5 13km SE of Bodfish, CA
- 1.8 30km ESE of Lake Isabella, CA
- 3.1 13km SE of Bodfish, CA
- 2.2 13km SE of Bodfish, CA
- 1.6 12km SE of Bodfish, CA
- 1.8 13km SE of Bodfish, CA
- 1.8 13km SE of Bodfish, CA
- 4.0 13km SE of Bodfish, CA
- 1.5 22km SE of Bodfish, CA
- 1.7 22km ESE of Bodfish, CA
- 1.8 15km ESE of Arvin, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.