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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

145 km WNW of Lebu, Chile

27 September 2026, 07:14:44 (+03) 2026-09-27 04:14:44 UTC

2 sources: EMSC, USGS mb
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Magnitude
4.5 mb
Depth
10.0 km
Coordinates
-37.1357, -75.1898
Data consistency
90/100

Regional activity (100 km)

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

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).

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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

1 earthquakes

By magnitude

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

By depth

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

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
OFF COAST OF BIO-BIO, CHILE
 4.5 mb 35.0 km 04:14:48.930 Δt 4.48 sn · 1.83 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
145 km WNW of Lebu, Chile
 4.5 mb 10.0 km 04:14:44.454 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. 27.09.2026 17:38:20 · EMSC · update

    depth: 10 → 35 latitude: -37.12 → -37.152 longitude: -74.93 → -75.1927 time: 2026-09-27T04:14:49.000+00:00 → 2026-09-27T04:14:48.930+00:00

  2. 27.09.2026 07:35:54 · SISTEM · recompute

    latitude: -37.12 → -37.1357 longitude: -74.93 → -75.1898 time: 2026-09-27T04:14:49.000Z → 2026-09-27 04:14:44.454+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  3. 27.09.2026 07:35:53 · EMSC · update

    magnitude: 4.3 → 4.5 magnitude type: mw → mb

  4. 27.09.2026 07:35:53 · SISTEM · recompute

    magnitude: 4.3 → 4.5 magnitude type: mw → mb

  5. 27.09.2026 07:24:18 · EMSC · update

    latitude: -37.03 → -37.12 longitude: -75.27 → -74.93 time: 2026-09-27T04:14:44.000+00:00 → 2026-09-27T04:14:49.000+00:00 magnitude type: mlv → mw

  6. 27.09.2026 07:24:18 · SISTEM · recompute

    latitude: -37.03 → -37.12 longitude: -75.27 → -74.93 time: 2026-09-27T04:14:44.000Z → 2026-09-27 04:14:49.000+00:00 magnitude type: mlv → mw

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