Earthquake · reviewed by a seismologist
M 3.1ml
Earthquake near Compton, CA
No earthquake was likely felt in Compton in the 24 hours to 2:58 am PST (10:58 UTC). The last one was M 1.8, 6 km (4 mi) W, at 2:31 pm PDT on 31 October 2026, estimated intensity II (weak) in town. Every earthquake near Compton
This page: a magnitude 3.1 earthquake was recorded 4 km (2 mi) south-southeast of Compton, CA, at 12:13 am PDT on 6 September 2026 (07:13 UTC), 16 km deep. 1,125 people have reported feeling it to USGS.
USGS: 4 km SSE of Compton, CA
25 km (16 mi) SE of Los Angeles, CA · in Compton, CA
- When
- 12:13 am PDT on 6 September 2026 ()
- Where
- 4 km (2 mi) south-southeast of Compton, CA · earthquakes near Compton
- Magnitude
- M 3.1 (ml)
- Depth
- 16 km below the surface
- Felt
- 1,125 reports · strongest reported intensity III
- Measured shaking
- intensity III (ShakeMap)
- Nearest
- Los Angeles County, 37 km N
- Nearest mapped fault
- Puente Hills blind thrust system, 7 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 56 days ago
Earthquake alerts for Compton, CA
Get a notification in this browser when USGS records an earthquake near Compton, 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 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 37 km (23 mi) from the epicentre. In Compton, 4 km away, the estimate is intensity III (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: Compton 4 km, intensity III · Paramount 5 km, intensity III · Lakewood 7 km, intensity III · Willowbrook 7 km, intensity III · Lynwood 7 km, intensity III · Carson 8 km, intensity III · Signal Hill 8 km, intensity III · Bellflower 9 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1,200 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.
- Northridge, California 1994 M 6.7 280,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
- Magna, Utah 2020 M 5.7 8,800× the energy of this one
- This earthquake M 3.1 about 1,200 lb of TNT
- Around the size people start to feel M 3.0 this one released 1.3× 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.
For this area
The largest earthquake within 50 km since 2016 was M 4.5 on 2020-09-19 — about 160 times the energy of this one.
Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 49 km NW of this epicentre
- 6.4 The 1933 Long Beach, California Earthquake · 32 km SE of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 25 km NNE of this epicentre
- 5.8 The 1991 Sierra Madre, California Earthquake · 49 km NNE of this epicentre
- 5.4 5km S of Chino Hills, CA · 42 km ENE 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 33.8645, -118.2095. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 37 km (23 mi) | N | earthquakes near Los Angeles County |
| Orange County, CA | 45 km (28 mi) | ESE | earthquakes near Orange County |
| Ventura County, CA | 101 km (63 mi) | WNW | earthquakes near Ventura County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 0.9 3 km NE of Montebello, CA
- 1.3 3 km ENE of Sunland, CA
- 0.9 1 km SSW of Pasadena, CA
- 2.2 3 km SSE of Costa Mesa, CA
- 3.6 6 km WSW of Hermosa Beach, CA
- 1.5 9 km ESE of Yorba Linda, CA
- 1.4 1 km NNE of Silver Lake, CA
- 1.3 8 km S of Chino Hills, CA
- 1.0 9 km E of Yorba Linda, CA
- 1.5 10 km ENE of North Tustin, CA
- 1.2 5 km NE of Bradbury, CA
- 1.2 10 km E of Yorba Linda, CA
- 1.6 4 km SW of Paramount, CA
- 2.9 4 km SSE of Compton, CA
- 1.6 1 km NE of La Habra, 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.