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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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3.7

159 km WSW of Nikolski, Alaska

20 September 2026, 08:02:37 (+03) 2026-09-20 05:02:37 UTC

1 source: USGS ml
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Magnitude
3.7 ml
Depth
110.8 km
Coordinates
52.3490, -171.0050
Data consistency
58/100

Regional activity (100 km)

Last 24 hours
2
Last 7 days
11
Last 30 days
18

Approximate energy released

≈ 5.4 t TNT

2.24e+10 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): 1,4 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

28 earthquakes

By magnitude

  • M0 0
  • M1 0
  • M2 8
  • M3 19
  • M4 1
  • M5 0
  • M6 0
  • M7 0
  • M8+ 0

By depth

  • 0–10 km 5
  • 10–20 km 6
  • 20–40 km 7
  • 40–70 km 2
  • 70–150 km 8
  • 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
159 km WSW of Nikolski, Alaska
 3.7 ml 110.8 km 05:02:37.054 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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