Skip to content
You are offline: the data shown may be out of date.

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.

Back to map
4.2

63 km WSW of Andacollo, Argentina

25 September 2026, 02:19:34 (+03) 2026-09-24 23:19:34 UTC

2 sources: EMSC, USGS mb
Did you feel this earthquake?
Magnitude
4.2 mb
Depth
174.3 km
Coordinates
-37.4621, -71.2930
Data consistency
90/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
0
Last 30 days
1

Approximate energy released

≈ 30 t TNT

1.26e+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?

Your report adds to a community map of where and how this earthquake was felt. It takes less than a minute.

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

2 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 0
  • M3 1
  • M4 1
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

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

Largest previous earthquakes within 100 km

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

No records.

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
BIO-BIO, CHILE
 4.2 mb 174.3 km 23:19:34.350 Δt 0 sn · 1.95 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
63 km WSW of Andacollo, Argentina
 4.2 mb 174.3 km 23:19:34.354 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. 25.09.2026 09:32:55 · EMSC · update

    depth: 151.6 → 174.3 latitude: -37.25 → -37.4673 longitude: -71.12 → -71.272 time: 2026-09-24T23:19:36.000+00:00 → 2026-09-24T23:19:34.350+00:00 location: NEUQUEN, ARGENTINA → BIO-BIO, CHILE magnitude type: m → mb

  2. 25.09.2026 04:58:34 · SISTEM · recompute

    depth: 151.6 → 174.34 latitude: -37.25 → -37.4621 longitude: -71.12 → -71.293 time: 2026-09-24T23:19:36.000Z → 2026-09-24 23:19:34.354+00:00 source count: 1 → 2 review status: automatic → reviewed magnitude type: m → mb confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  3. 25.09.2026 02:38:38 · EMSC · update

    depth: 153.5 → 151.6 longitude: -71.15 → -71.12 magnitude: 4.1 → 4.2

  4. 25.09.2026 02:38:38 · SISTEM · recompute

    depth: 153.5 → 151.6 longitude: -71.15 → -71.12 magnitude: 4.1 → 4.2

  5. 25.09.2026 02:29:15 · EMSC · update

    magnitude: 3.8 → 4.1 magnitude type: ml → m

  6. 25.09.2026 02:29:15 · SISTEM · recompute

    magnitude: 3.8 → 4.1 magnitude type: ml → m

  7. 25.09.2026 02:28:14 · EMSC · update

    depth: 200 → 153.5 latitude: -37.59 → -37.25 longitude: -71.16 → -71.15 magnitude: 3.9 → 3.8 time: 2026-09-24T23:19:31.000+00:00 → 2026-09-24T23:19:36.000+00:00 location: BIO-BIO, CHILE → NEUQUEN, ARGENTINA

  8. 25.09.2026 02:28:14 · SISTEM · recompute

    depth: 200 → 153.5 latitude: -37.59 → -37.25 longitude: -71.16 → -71.15 magnitude: 3.9 → 3.8 time: 2026-09-24T23:19:31.000Z → 2026-09-24 23:19:36.000+00:00

This platform is provided for information and data visualisation purposes. Follow the announcements of the competent authorities for official emergency warnings.