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SeismoAtlas

M3.0 earthquake – Nikolski, Alaska

A magnitude 3.0 earthquake struck in the Nikolski, Alaska region at 18:42 UTC on 1 Sept 2026, at a depth of 10 km, according to USGS.

Data: USGS · updated 2026-09-09 17:18 UTC · reviewed

Magnitude
3.0minor
local magnitude (Richter) (ml)
Depth
10 km
Status
Reviewed
Origin time
2026-09-01 18:42:53 UTC
Epicentre
52.412° N, 169.151° W

Circles show this event and others within 30 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map

Nearby places

Distance and estimated shaking at nearby places
PlaceDistanceEst. shaking
No towns within 400 km. This is a remote area.

Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more. Likely felt out to about 12 km.

Every agency's solution

Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGSheadlineUSGS NEIC via U.S. Geological Survey3.0 ml10 km52.41° N, 169.15° W–Reviewed

How big was it?

Often felt by people at rest close to the epicentre, rarely causes damage.

It released roughly the energy of 477 kg of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 10 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M3.0 releases about 32× the energy of M2.0, and its waves are about 10× taller on a seismogram. Energy: 477 kg of TNT vs 15 kg of TNT.

Each square is the energy of one M2.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

94 later earthquakes within 30 km; the largest was M6.3 25 days ago. 6 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M3.0

94 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.563.635
10.525.235
10.783.410
11.062.79
11.072.726
12.153.513
13.492.510
13.552.75
13.883.311
13.992.610
14.352.710
16.972.810
17.825.235
32.863.735
40.576.321
40.664.217
40.705.146
40.843.510
40.933.44
41.173.611
41.702.911
42.093.012
42.263.110
42.973.410
43.232.610
43.332.610
43.442.817
43.553.07
43.954.235
44.692.510
44.994.535
45.372.717
45.432.610
45.794.247
47.282.811
47.952.610
48.103.435
48.172.624
48.754.037
49.433.035
49.533.725
49.665.033
49.813.838
50.172.615
50.232.812
51.892.810
51.993.310
52.302.535
52.662.723
53.192.811
55.953.010
56.972.824
58.392.812
58.472.710
60.142.81
60.402.716
60.712.810
61.592.75
62.022.711
62.282.722
62.713.512
63.683.215
65.332.635
68.163.135
70.772.625
81.452.535
92.123.07
93.452.75
95.294.929
95.482.820
109.102.821
110.352.91
122.522.711
123.962.711
127.753.210
128.602.612
138.372.713
139.592.735
156.133.015
157.562.95
167.293.410
167.742.610
171.402.914
172.334.046
172.432.77
172.742.713
173.662.712
173.683.650
213.622.735
227.642.98
289.972.716
290.332.935
426.024.041
602.814.035
  1. 6.3Nikolski, Alaska09-03 11:17
  2. 5.2Nikolski, Alaska09-02 05:14
  3. 5.2Nikolski, Alaska09-02 12:32
  4. 5.1Nikolski, Alaska09-03 11:24
  5. 5.0Nikolski, Alaska09-03 20:22
  6. 4.9Nikolski, Alaska09-05 18:00
  7. 4.5Nikolski, Alaska09-03 15:42
  8. 4.2Nikolski, Alaska09-03 11:22
  9. 4.2Nikolski, Alaska09-03 14:39
  10. 4.2Nikolski, Alaska09-03 16:30
  11. 4.0Nikolski, Alaska09-03 19:27
  12. 4.0Nikolski, Alaska09-08 23:02
  13. 4.0Nikolski, Alaska09-19 12:44
  14. 4.0Fox Islands, Aleutian Islands09-26 21:31
  15. 3.8Nikolski, Alaska09-03 20:31
  16. 3.7Nikolski, Alaska09-03 03:34
  17. 3.7Nikolski, Alaska09-03 20:14
  18. 3.6Nikolski, Alaska09-01 22:16
  19. 3.6Nikolski, Alaska09-03 11:53
  20. 3.6Nikolski, Alaska09-09 00:23
  21. 3.5Nikolski, Alaska09-02 06:52
  22. 3.5Nikolski, Alaska09-03 11:33
  23. 3.5Nikolski, Alaska09-04 09:25
  24. 3.4Nikolski, Alaska09-02 05:29
  25. 3.4Nikolski, Alaska09-03 11:38

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id us7000tdif. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS (usgs:us7000tdif). Cite as: SeismoAtlas, “M3.0 earthquake – Nikolski, Alaska”, https://seismoatlas.com/earthquake/us7000tdif-m3-0-earthquake-nikolski-alaska, data from USGS.

JSON: /api/v1/events/us7000tdif. SeismoAtlas is not an official warning service.