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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

41 km W of Mosteiros, Portugal

29 October 2026, 10:54:06 (+03) 2026-10-29 07:54:06 UTC

3 sources: EMSC, USGS, GFZ mb
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Magnitude
4.6 mb
Depth
10.0 km
Coordinates
37.9065, -26.2963
Data consistency
89/100

Regional activity (100 km)

Last 24 hours
2
Last 7 days
4
Last 30 days
52

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

52 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 33
  • M3 15
  • M4 2
  • M5 2
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 48
  • 10–20 km 4
  • 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).

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
AZORES ISLANDS, PORTUGAL
 4.6 mb 1.1 km 07:54:06.730 Δt 0.01 sn · 12.93 km · ΔM 0 Original record
USGS Earthquake Hazards Program Displayed
41 km W of Mosteiros, Portugal
 4.6 mb 10.0 km 07:54:06.718 Δt 0 sn · 0 km · ΔM 0 Original record
GFZ GEOFON
Azores Islands, Portugal
 4.9 mb 10.0 km 07:54:08.700 Δt 1.98 sn · 22.54 km · ΔM +0.3 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) GEOFON Program, GFZ Helmholtz Centre for Geosciences — CC BY 4.0

Revision history

  1. 29.10.2026 15:15:49 · EMSC · update

    depth: 10 → 1.1 latitude: 37.911 → 38.0042 longitude: -26.04 → -26.2161 time: 2026-10-29T07:54:08.700+00:00 → 2026-10-29T07:54:06.730+00:00

  2. 29.10.2026 11:54:43 · GFZ · update

    latitude: 37.904 → 37.911 longitude: -26.048 → -26.04 time: 2026-10-29T07:54:08.610+00:00 → 2026-10-29T07:54:08.700+00:00

  3. 29.10.2026 11:54:40 · EMSC · update

    latitude: 37.9065 → 37.911 longitude: -26.2963 → -26.04 time: 2026-10-29T07:54:06.718+00:00 → 2026-10-29T07:54:08.700+00:00

  4. 29.10.2026 11:52:40 · SISTEM · recompute

    source count: 2 → 3 confirming sources: emsc,usgs → emsc,usgs,gfz

  5. 29.10.2026 11:21:08 · SISTEM · recompute

    source count: 1 → 2 review status: automatic → reviewed confirming sources: emsc → emsc,usgs preferred source: 3 → 4

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