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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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4.7

103 km W of Attu Station, Alaska

10 November 2026, 01:03:07 (+03) 2026-11-09 22:03:07 UTC

2 sources: EMSC, USGS mb
Did you feel this earthquake?
Magnitude
4.7 mb
Depth
10.0 km
Coordinates
52.7984, 171.6466
Data consistency
88/100

Regional activity (100 km)

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

Approximate energy released

≈ 169 t TNT

7.08e+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 Maximum intensity (MMI): 3,1 ShakeMap

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

Sources report different values.
Agency Magnitude Depth Time (UTC) Difference from master Original record
EMSC-CSEM
NEAR ISLANDS, ALEUTIAN ISLANDS
 4.5 ml 10.0 km 22:03:08.330 Δt 0.85 sn · 10.86 km · ΔM -0.2 Original record
USGS Earthquake Hazards Program Displayed
103 km W of Attu Station, Alaska
 4.7 mb 10.0 km 22:03:07.482 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. 10.11.2026 10:45:16 · EMSC · update

    latitude: 52.7984 → 52.7155 longitude: 171.6466 → 171.7314 magnitude: 4.7 → 4.5 time: 2026-11-09T22:03:07.482+00:00 → 2026-11-09T22:03:08.330+00:00 magnitude type: mb → ml

  2. 10.11.2026 01:32:11 · USGS · update

    latitude: 52.7289 → 52.7984 longitude: 171.6154 → 171.6466 time: 2026-11-09T22:03:07.165+00:00 → 2026-11-09T22:03:07.482+00:00 location: 106 km W of Attu Station, Alaska → 103 km W of Attu Station, Alaska

  3. 10.11.2026 01:32:11 · SISTEM · recompute

    latitude: 52.7289 → 52.7984 longitude: 171.6154 → 171.6466 time: 2026-11-09T22:03:07.165Z → 2026-11-09 22:03:07.482+00:00

  4. 10.11.2026 01:32:10 · EMSC · update

    latitude: 52.7289 → 52.7984 longitude: 171.6154 → 171.6466 time: 2026-11-09T22:03:07.165+00:00 → 2026-11-09T22:03:07.482+00:00

  5. 10.11.2026 01:17:45 · SISTEM · recompute

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

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