M3.0 earthquake 146 km WSW of Coronado, California, United States
A magnitude 3.0 earthquake struck 146 km WSW of Coronado, California, United States at 04:54 local time (11:54 UTC) on 28 Oct 2026, at a depth of 10 km, according to USGS.
Data: USGS · updated 2026-10-29 09:49 UTC · reviewed
- Magnitude
- 3.0minor
local magnitude (Richter) (ml) - Depth
- 10 km
- Status
- Reviewed
- Origin time
- 2026-10-28 11:54:13 UTC
- Local: 28 Oct 2026, 04:54:13 (America/Los Angeles)
- Epicentre
- 32.234° N, 118.640° 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 |
|---|---|---|
| CoronadoCalifornia, United States · pop. 24,812 | 146 km | INot felt |
| Imperial BeachCalifornia, United States · pop. 27,408 | 149 km | INot felt |
| San DiegoCalifornia, United States · pop. 1,404,452 | 149 km | INot felt |
| Chula VistaCalifornia, United States · pop. 265,757 | 153 km | INot felt |
| TijuanaBaja California, Mexico · pop. 1,922,523 | 157 km | INot felt |
| Long BeachCalifornia, United States · pop. 474,140 | 176 km | INot felt |
| IrvineCalifornia, United States · pop. 256,927 | 177 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 12 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, which has been reviewed by an analyst.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGSheadlineUSGS NEIC via U.S. Geological Survey | 3.0 ml | 10 km | 32.23° N, 118.64° W | – | Reviewed |
How big was it?
Often felt by people at rest close to the epicentre, rarely causes damage.
It released roughly the energy of 477 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 10 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.
M3.0 releases about 32× the energy of M2.0, and its waves are about 10× taller on a seismogram. Energy: 477 kg of TNT vs 15 kg of TNT.
Each square is the energy of one M2.0. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
No later earthquakes have been recorded within 30 km so far. Aftershock rates usually fall off roughly in proportion to 1/time.
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.
Reports on SeismoAtlas
No reports yet.
Event id us7000ttng. First recorded here 29 Oct 2026, 09:54:44 UTC. Solutions: USGS (usgs:us7000ttng). Cite as: SeismoAtlas, “M3.0 earthquake 146 km WSW of Coronado, California, United States”, https://seismoatlas.com/earthquake/us7000ttng-m3-0-earthquake-146-km-wsw-of-coronado-california-united-states, data from USGS.
JSON: /api/v1/events/us7000ttng. SeismoAtlas is not an official warning service.