Earthquake · reviewed by a seismologist
M 2.8ml
Earthquake near Lamont, CA
No earthquake was likely felt in Lamont in the 24 hours to 7:03 am PST (15:03 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 2.8 earthquake was recorded 7 km (4 mi) south of Lamont, CA, at 8:25 pm PDT on 20 July 2018 (03:25 UTC), 17 km deep. 1 person has reported feeling it to USGS.
USGS: 7km S of Lamont, CA
20 km (13 mi) SSE of Bakersfield, CA · 139 km (86 mi) NNW of Los Angeles, CA
- When
- 8:25 pm PDT on 20 July 2018 ()
- Where
- 7 km (4 mi) south of Lamont, CA · earthquakes near Lamont
- Magnitude
- M 2.8 (ml)
- Depth
- 17 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Kern County, 24 km NE
- Nearest mapped fault
- White Wolf 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 3030 days ago
Earthquake alerts for Lamont, CA
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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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 23 km (14 mi) from the epicentre. In Lamont, 7 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.
Likely felt in: Lamont 7 km, intensity II · Arvin 8 km, intensity II · Bakersfield 21 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
- Magna, Utah 2020 M 5.7 19,000× the energy of this one
- Around the size people start to feel M 3.0 1.7× the energy of this one
- This earthquake M 2.8 about 550 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 30 earthquakes of M5 or more within 50 km; the five largest:
- 7.5 The 1952 Kern County, California Earthquake · 28 km SSW of this epicentre
- 6.0 Tejon Pass, California · 33 km S of this epicentre
- 5.8 Near Bakersfield, California · 15 km NE of this epicentre
- 5.8 13km WNW of Grapevine, CA · 29 km SSW of this epicentre
- 5.7 11km N of Lamont, CA · 18 km N 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 35.1997, -118.9170. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Kern County, CA | 24 km (15 mi) | NE | earthquakes near Kern County |
| Ventura County, CA | 96 km (59 mi) | SSW | earthquakes near Ventura County |
| Tulare County, CA | 115 km (72 mi) | N | earthquakes near Tulare County |
| Santa Barbara County, CA | 126 km (78 mi) | SW | earthquakes near Santa Barbara County |
| Kings County, CA | 127 km (79 mi) | NW | earthquakes near Kings County |
| Los Angeles County, CA | 127 km (79 mi) | SSE | earthquakes near Los Angeles County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 1.8 23km ENE of Arvin, CA
- 1.8 10km W of Pine Mountain Club, CA
- 1.6 6km NNE of Tehachapi, CA
- 1.7 20km NNW of Tehachapi, CA
- 2.8 16km NNW of Grapevine, CA
- 2.1 24km NNW of Tehachapi, CA
- 2.0 15km NW of Grapevine, CA
- 1.7 7km NW of Pine Mountain Club, CA
- 1.8 25km ENE of Maricopa, CA
- 1.5 15km WNW of Grapevine, CA
- 1.7 18km NNW of Tehachapi, CA
- 1.7 24km ENE of Maricopa, CA
- 1.9 14km WNW of Pine Mountain Club, CA
- 1.7 14km S of Bodfish, CA
- 1.8 22km SSW 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
- 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.