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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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2.9

186 km S of Atka, Alaska

20 October 2026, 23:26:02 (+03) 2026-10-20 20:26:02 UTC

1 source: USGS ml
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Magnitude
2.9 ml
Depth
24.7 km
Coordinates
50.5200, -174.3350
Data consistency
58/100

Regional activity (100 km)

Last 24 hours
0
Last 7 days
0
Last 30 days
6

Approximate energy released

≈ 0.3 t TNT

1.41e+9 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

6 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 3
  • M3 2
  • M4 1
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 1
  • 10–20 km 4
  • 20–40 km 1
  • 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

Agency Magnitude Depth Time (UTC) Difference from master Original record
USGS Earthquake Hazards Program Displayed
186 km S of Atka, Alaska
 2.9 ml 24.7 km 20:26:02.104 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

No revisions.

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