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Significant earthquake

This summarises a recorded earthquake only; it is not a warning or a prediction. Follow AFAD and the competent authorities for official statements and guidance.

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4.5

79 km W of San Antonio de los Cobres, Argentina

19 October 2026, 10:33:35 (+03) 2026-10-19 07:33:35 UTC

2 sources: EMSC, USGS mb
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Magnitude
4.5 mb
Depth
170.3 km
Coordinates
-24.2627, -67.1004
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
7
Last 7 days
39
Last 30 days
191

Approximate energy released

≈ 85 t TNT

3.55e+11 J

Approximated with the Gutenberg–Richter relation (log E = 1.5 M + 4.8); depends on magnitude type. Gutenberg & Richter (1956).

Did you feel this earthquake?

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Community reports

Based on voluntary reports from users; not an instrumental measurement or official intensity. For official information follow AFAD and Kandilli Observatory announcements.

Impact information reported by sources

  • USGS Earthquake Hazards Program Tsunami flag: No

These values are automatic products of the respective agency, not an assessment by this platform. For tsunami warnings follow the Kandilli Observatory Regional Earthquake-Tsunami Monitoring Center and AFAD.

Nearby places

No records.

Nearby faults (50 km)

No mapped fault within 50 km.

Last year, within 100 km

222 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 51
  • M3 161
  • M4 10
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 0
  • 10–20 km 0
  • 20–40 km 1
  • 40–70 km 1
  • 70–150 km 3
  • 150+ km 217

Largest previous earthquakes within 100 km

Largest earthquakes in the platform catalogue and entries from historical catalogues (with citation).

Comparison with past records

…

No earlier earthquakes are recorded in this area.

  • Source:

Where does this earthquake come from?

Source comparison

Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
SALTA, ARGENTINA
 4.5 mb 176.0 km 07:33:35.620 Δt 0.18 sn · 3.96 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
79 km W of San Antonio de los Cobres, Argentina
 4.5 mb 170.3 km 07:33:35.444 Δt 0 sn · 0 km · ΔM 0 Original record

This value summarises agreement between sources; it is not a measure of scientific accuracy. Euro-Mediterranean Seismological Centre (EMSC-CSEM) — CC BY 4.0 U.S. Geological Survey (USGS) Earthquake Hazards Program — Public domain (U.S. Government)

Revision history

  1. 20.10.2026 15:58:56 · EMSC · update

    depth: 193 → 176 latitude: -24.1614 → -24.2405 longitude: -67.1944 → -67.0698 magnitude: 4.4 → 4.5 time: 2026-10-19T07:33:34.850+00:00 → 2026-10-19T07:33:35.620+00:00

  2. 20.10.2026 10:46:56 · SISTEM · recompute

    depth: 193 → 170.26 latitude: -24.1614 → -24.2627 longitude: -67.1944 → -67.1004 magnitude: 4.4 → 4.5 time: 2026-10-19T07:33:34.850Z → 2026-10-19 07:33:35.444+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  3. 19.10.2026 17:04:58 · EMSC · update

    depth: 220.4 → 193 latitude: -24.02 → -24.1614 longitude: -67.45 → -67.1944 magnitude: 3.9 → 4.4 time: 2026-10-19T07:33:35.000+00:00 → 2026-10-19T07:33:34.850+00:00 location: ANTOFAGASTA, CHILE → SALTA, ARGENTINA magnitude type: mw → mb

  4. 19.10.2026 17:04:58 · SISTEM · recompute

    depth: 220.4 → 193 latitude: -24.02 → -24.1614 longitude: -67.45 → -67.1944 magnitude: 3.9 → 4.4 time: 2026-10-19T07:33:35.000Z → 2026-10-19 07:33:34.850+00:00 magnitude type: mw → mb

  5. 19.10.2026 10:51:58 · EMSC · update

    depth: 203 → 220.4 latitude: -24.24 → -24.02 longitude: -67.16 → -67.45 magnitude: 4.6 → 3.9 location: SALTA, ARGENTINA → ANTOFAGASTA, CHILE magnitude type: ml → mw

  6. 19.10.2026 10:51:58 · SISTEM · recompute

    depth: 203 → 220.4 latitude: -24.24 → -24.02 longitude: -67.16 → -67.45 magnitude: 4.6 → 3.9 magnitude type: ml → mw

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