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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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4.6

6 km NNE of Sámi, Greece

17 October 2026, 02:57:50 (+03) 2026-10-16 23:57:50 UTC

2 sources: EMSC, USGS mb
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Magnitude
4.6 mb
Depth
10.0 km
Coordinates
38.3050, 20.6863
Data consistency
88/100

Regional activity (100 km)

Last 24 hours
8
Last 7 days
89
Last 30 days
489

Approximate energy released

≈ 120 t TNT

5.01e+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

511 earthquakes

By magnitude

  • M0 62
  • M1 339
  • M2 92
  • M3 13
  • M4 5
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 89
  • 10–20 km 275
  • 20–40 km 139
  • 40–70 km 4
  • 70–150 km 2
  • 150+ km 2

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

Sources report different values.
Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
GREECE
 4.3 mw 11.0 km 23:57:50.710 Δt 0.17 sn · 2.83 km · ΔM -0.3 Original record
USGS Earthquake Hazards Program Displayed
6 km NNE of Sámi, Greece
 4.6 mb 10.0 km 23:57:50.544 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. 19.10.2026 09:38:37 · EMSC · update

    depth: 5 → 11 latitude: 38.27 → 38.28 longitude: 20.67 → 20.68 magnitude: 4.2 → 4.3 time: 2026-10-16T23:57:51.200+00:00 → 2026-10-16T23:57:50.710+00:00 magnitude type: ml → mw

  2. 17.10.2026 08:35:57 · EMSC · update

    magnitude: 4.6 → 4.2 magnitude type: mb → ml

  3. 17.10.2026 03:33:15 · SISTEM · recompute

    depth: 5 → 10 latitude: 38.27 → 38.305 longitude: 20.67 → 20.6863 time: 2026-10-16T23:57:51.200Z → 2026-10-16 23:57:50.544+00:00 source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

  4. 17.10.2026 03:33:14 · EMSC · update

    magnitude: 4.3 → 4.6 magnitude type: mw → mb

  5. 17.10.2026 03:33:14 · SISTEM · recompute

    magnitude: 4.3 → 4.6 magnitude type: mw → mb

  6. 17.10.2026 03:18:40 · EMSC · update

    magnitude: 4.2 → 4.3 magnitude type: ml → mw

  7. 17.10.2026 03:18:40 · SISTEM · recompute

    magnitude: 4.2 → 4.3 magnitude type: ml → mw

  8. 17.10.2026 03:02:01 · EMSC · update

    latitude: 38.2892 → 38.27 longitude: 20.6512 → 20.67 time: 2026-10-16T23:57:51.149+00:00 → 2026-10-16T23:57:51.200+00:00

  9. 17.10.2026 03:02:01 · SISTEM · recompute

    latitude: 38.2892 → 38.27 longitude: 20.6512 → 20.67 time: 2026-10-16T23:57:51.149Z → 2026-10-16 23:57:51.200+00:00

  10. 17.10.2026 03:00:59 · EMSC · update

    magnitude: 4.6 → 4.2 time: 2026-10-16T23:57:51.149+00:00 → 2026-10-16T23:57:51.148+00:00 magnitude type: m → ml

  11. 17.10.2026 03:00:59 · SISTEM · recompute

    magnitude: 4.6 → 4.2 magnitude type: m → ml

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