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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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2.6

79 km E of Chignik, Alaska

27 October 2026, 09:42:51 (+03) 2026-10-27 06:42:51 UTC

1 source: USGS ml
Magnitude
2.6 ml
Depth
25.3 km
Coordinates
56.2330, -157.1270
Data consistency
58/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
2
Last 30 days
8

Approximate energy released

≈ 0.1 t TNT

5.01e+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.

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

14 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 9
  • M3 5
  • M4 0
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 1
  • 10–20 km 3
  • 20–40 km 6
  • 40–70 km 1
  • 70–150 km 3
  • 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

Agency Magnitude Depth Time (UTC) Difference from master Original record
USGS Earthquake Hazards Program Displayed
79 km E of Chignik, Alaska
2.6 ml 25.3 km 06:42:51.045 Δt 0 sn · 0 km · ΔM 0 Original record

This value summarises agreement between sources; it is not a measure of scientific accuracy. U.S. Geological Survey (USGS) Earthquake Hazards Program — Public domain (U.S. Government)

Revision history

  1. 30.10.2026 09:33:43 · USGS · update

    depth: 18.5 → 25.3 latitude: 56.216 → 56.233 longitude: -157.11 → -157.127 magnitude: 2.5 → 2.6 time: 2026-10-27T06:42:50.318+00:00 → 2026-10-27T06:42:51.045+00:00 location: 80 km E of Chignik, Alaska → 79 km E of Chignik, Alaska review status: automatic → reviewed

  2. 30.10.2026 09:33:43 · SISTEM · recompute

    depth: 18.5 → 25.3 latitude: 56.216 → 56.233 longitude: -157.11 → -157.127 magnitude: 2.5 → 2.6 time: 2026-10-27T06:42:50.318Z → 2026-10-27 06:42:51.045+00:00 review status: automatic → reviewed

  3. 27.10.2026 09:45:25 · USGS · update

    depth: 21 → 18.5 latitude: 56.213 → 56.216 longitude: -157.112 → -157.11 magnitude: 2.6 → 2.5 time: 2026-10-27T06:42:50.524+00:00 → 2026-10-27T06:42:50.318+00:00

  4. 27.10.2026 09:45:25 · SISTEM · recompute

    depth: 21 → 18.5 latitude: 56.213 → 56.216 longitude: -157.112 → -157.11 magnitude: 2.6 → 2.5 time: 2026-10-27T06:42:50.524Z → 2026-10-27 06:42:50.318+00:00

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