M4.8 earthquake 126 km W of Tilcara, Jujuy, Argentina
A magnitude 4.8 earthquake struck 126 km W of Tilcara, Jujuy, Argentina at 02:31 local time (05:31 UTC) on 1 Nov 2026, at a depth of 202 km, according to USGS and GFZ.
Reported by 2 agencies · revised from M4.6
Data: USGS, GFZ · updated 2026-11-01 05:47 UTC · reviewed
- Magnitude
- 4.8light
moment magnitude (W phase) (mww)
revised from 4.6 - Depth
- 202.1 km
- Status
- Reviewed
- Origin time
- 2026-11-01 05:31:54 UTC
- Local: 1 Nov 2026, 02:31:54 (America/Argentina/Jujuy)
- Epicentre
- 23.639° S, 66.632° W
Circles show this event and others within 32 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 |
|---|---|---|
| TilcaraJujuy, Argentina · pop. 5,640 | 126 km | INot felt |
| HumahuacaJujuy, Argentina · pop. 11,369 | 139 km | INot felt |
| San Salvador de JujuyJujuy, Argentina · pop. 257,970 | 150 km | INot felt |
| SaltaArgentina · pop. 520,683 | 179 km | INot felt |
| San Miguel de TucumánTucuman, Argentina · pop. 548,866 | 382 km | INot felt |
| AntofagastaChile · pop. 401,096 | 384 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 USGS, which has been reviewed by an analyst.
How big was it?
Widely felt near the epicentre: rattling windows and objects. Significant damage is unlikely.
It released roughly the energy of 239 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 202 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.
M4.8 releases about 32× the energy of M3.8, and its waves are about 10× taller on a seismogram. Energy: 239 t of TNT vs 7.6 t of TNT.
Each square is the energy of one M3.8. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
No later earthquakes have been recorded within 32 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 gfz2026vjvw. First recorded here 1 Nov 2026, 05:36:07 UTC. Solutions: GFZ (geofon:gfz2026vjvw); USGS (usgs:us7000tumy). Cite as: SeismoAtlas, “M4.8 earthquake 126 km W of Tilcara, Jujuy, Argentina”, https://seismoatlas.com/earthquake/gfz2026vjvw-m4-8-earthquake-126-km-w-of-tilcara-jujuy-argentina, data from USGS, GFZ.
JSON: /api/v1/events/gfz2026vjvw. SeismoAtlas is not an official warning service.