M3.9 earthquake – Chile-Argentina Border Region
A magnitude 3.9 earthquake struck in the Chile-Argentina Border region at 02:10 local time (05:10 UTC) on 11 Nov 2026, at a depth of 186 km, according to GFZ. The solution is preliminary and may be revised.
Data: GFZ · updated 2026-11-11 05:10 UTC · automatic solution
- Magnitude
- 3.9minor
local magnitude (Richter) (ML) - Depth
- 185.5 km
- Status
- Automatic
- Origin time
- 2026-11-11 05:10:33 UTC
- Local: 11 Nov 2026, 02:10:33 (America/Santiago)
- Epicentre
- 24.255° S, 67.391° 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 |
|---|---|---|
| SaltaArgentina · pop. 520,683 | 209 km | INot felt |
| San Salvador de JujuyJujuy, Argentina · pop. 257,970 | 213 km | INot felt |
| AntofagastaChile · pop. 401,096 | 313 km | INot felt |
| San Miguel de TucumánTucuman, Argentina · pop. 548,866 | 359 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.
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 GFZ.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| GFZheadlineGFZ via GEOFON, GFZ Helmholtz Centre for Geosciences | 3.9 ML | 185.5 km | 24.25° S, 67.39° W | – | Automatic |
How big was it?
Often felt by people at rest close to the epicentre, rarely causes damage.
It released roughly the energy of 12 t 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 186 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.
M3.9 releases about 36× the energy of M2.9, and its waves are about 11× taller on a seismogram. Energy: 12 t of TNT vs 338 kg of TNT.
Each square is the energy of one M2.9. 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 on SeismoAtlas
No reports yet.
Event id gfz2026wccf. First recorded here 11 Nov 2026, 11:26:53 UTC. Solutions: GFZ (geofon:gfz2026wccf). Cite as: SeismoAtlas, “M3.9 earthquake – Chile-Argentina Border Region”, https://seismoatlas.com/earthquake/gfz2026wccf-m3-9-earthquake-chile-argentina-border-region, data from GFZ.
JSON: /api/v1/events/gfz2026wccf. SeismoAtlas is not an official warning service.