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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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2.7

Marmara Denizi - [20.61 km] Marmaraereğlisi (Tekirdağ)

20 October 2026, 12:04:05 (+03) 2026-10-20 09:04:05 UTC

3 sources: AFAD, KANDILLI, EMSC ML
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Magnitude
2.7 ML
Depth
7.2 km
Coordinates
40.8195, 28.1083
Data consistency
94/100

Regional activity (100 km)

Last 24 hours
9
Last 7 days
37
Last 30 days
127

Approximate energy released

≈ 0.2 t TNT

7.08e+8 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.

Nearby places

Nearby faults (50 km)

No mapped fault within 50 km.

Last year, within 100 km

172 earthquakes

By magnitude

  • M0 21
  • M1 123
  • M2 24
  • M3 4
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 122
  • 10–20 km 48
  • 20–40 km 2
  • 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).

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
AFAD Deprem Dairesi Displayed
Marmara Denizi - [20.61 km] Marmaraereğlisi (Tekirdağ)
 2.7 ML 7.2 km 09:04:05.000 Δt 0 sn · 0 km · ΔM 0 Original record
Kandilli Rasathanesi (KOERI)
MARMARA DENIZI
 2.9 ML 11.6 km 09:04:06.000 Δt 1 sn · 0.62 km · ΔM +0.2
EMSC-CSEM
WESTERN TURKEY
 2.8 ml 7.2 km 09:04:06.290 Δt 1.29 sn · 0 km · ΔM +0.1 Original record

This value summarises agreement between sources; it is not a measure of scientific accuracy. T.C. İçişleri Bakanlığı Afet ve Acil Durum Yönetimi Başkanlığı (AFAD) — AFAD kullanım izni ile Boğaziçi Üniversitesi Kandilli Rasathanesi ve Deprem Araştırma Enstitüsü (KRDAE) Bölgesel Deprem-Tsunami İzleme ve Değerlendirme Merkezi — KRDAE kullanım izni ile Euro-Mediterranean Seismological Centre (EMSC-CSEM) — CC BY 4.0

Revision history

  1. 20.10.2026 12:51:34 · SISTEM · recompute

    depth: 11.6 → 7.15 latitude: 40.8142 → 40.8195 longitude: 28.1062 → 28.10833 magnitude: 2.9 → 2.7 time: 2026-10-20T09:04:06.000Z → 2026-10-20 09:04:05.000+00:00 source count: 2 → 3 confirming sources: kandilli,emsc → afad,kandilli,emsc preferred source: 2 → 1

  2. 20.10.2026 12:51:30 · EMSC · update

    depth: 11.6 → 7.2 latitude: 40.8142 → 40.8195 longitude: 28.1062 → 28.1083 magnitude: 2.9 → 2.8 time: 2026-10-20T09:04:06.300+00:00 → 2026-10-20T09:04:06.290+00:00

  3. 20.10.2026 12:14:40 · SISTEM · recompute

    source count: 1 → 2 confirming sources: kandilli → kandilli,emsc

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