M2.9 earthquake 4 km S of East Rancho Dominguez, California, United States
A magnitude 2.9 earthquake struck 4 km S of East Rancho Dominguez, California, United States at 13:32 local time (20:32 UTC) on 17 Sept 2026, at a depth of 13 km, according to USGS.
516 reports to USGS “Did You Feel It?”
Data: USGS · updated 2026-09-20 06:21 UTC · reviewed
- Magnitude
- 2.9micro
local magnitude (Richter) (ml) - Depth
- 13.2 km
- Status
- Reviewed
- Origin time
- 2026-09-17 20:32:29 UTC
- Local: 17 Sept 2026, 13:32:29 (America/Los Angeles)
- Epicentre
- 33.865° N, 118.207° W
Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map
Nearby places
| Place | Distance | Est. shaking |
|---|---|---|
| East Rancho DominguezCalifornia, United States · pop. 15,135 | 4 km | IIIWeak |
| ComptonCalifornia, United States · pop. 98,462 | 4 km | IIIWeak |
| ParamountCalifornia, United States · pop. 55,412 | 5 km | IIIWeak |
| LynwoodCalifornia, United States · pop. 71,989 | 7 km | IIWeak |
| LakewoodCalifornia, United States · pop. 81,611 | 7 km | IIWeak |
| Long BeachCalifornia, United States · pop. 474,140 | 11 km | IIWeak |
| Los AngelesCalifornia, United States · pop. 3,820,914 | 21 km | IIWeak |
| AnaheimCalifornia, United States · pop. 350,742 | 28 km | INot felt |
Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more. Likely felt out to about 7 km.
Every agency's solution
Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS · CI, which has been reviewed by an analyst.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGS · CIheadlineSouthern California Seismic Network via U.S. Geological Survey | 2.9 ml | 13.2 km | 33.86° N, 118.21° W | – | Reviewed |
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How big was it?
Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.
It released roughly the energy of 388 kg of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 13 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.
M2.9 releases about 36× the energy of M1.9, and its waves are about 11× taller on a seismogram. Energy: 388 kg of TNT vs 11 kg of TNT.
Each square is the energy of one M1.9. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
9 later earthquakes within 30 km; the largest was M3.6 46 days ago. 2 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M2.9
9 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 228.57 | 1.4 | 6 |
| 235.13 | 3.6 | 12 |
| 394.79 | 0.9 | 17 |
| 420.54 | 1.2 | 21 |
| 429.87 | 0.7 | 13 |
| 515.20 | 3.2 | 12 |
| 594.94 | 1.4 | 8 |
| 628.08 | 0.5 | 11 |
| 685.73 | 1.7 | 7 |
- 3.67 km WSW of Hermosa Beach, California, United States09-27 15:40
- 3.2Near Signal Hill, California, United States10-09 07:44
- 1.711 km SSW of Long Beach, California, United States10-16 10:16
- 1.44 km E of Santa Monica, California, United States10-12 15:28
- 1.44 km S of Glendale, California, United States09-27 09:06
- 1.2Near Pico Rivera, California, United States10-05 09:04
- 0.9Near South San Gabriel, California, United States10-04 07:20
- 0.7Near South Pasadena, California, United States10-05 18:24
- 0.55 km ENE of Los Angeles, California, United States10-14 00:37
Did you feel it?
Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.
Reports close 14 days after an earthquake.
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Event id ci41334231. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · CI (usgs:ci41334231). Cite as: SeismoAtlas, “M2.9 earthquake 4 km S of East Rancho Dominguez, California, United States”, https://seismoatlas.com/earthquake/ci41334231-m2-9-earthquake-4-km-s-of-east-rancho-dominguez-california-united-states, data from USGS.
JSON: /api/v1/events/ci41334231. SeismoAtlas is not an official warning service.