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SeismoAtlas

M2.6 earthquake – Nikolski, Alaska

A magnitude 2.6 earthquake struck in the Nikolski, Alaska region at 11:49 UTC on 2 Sept 2026, at a depth of 35 km, according to USGS.

Data: USGS · updated 2026-09-24 12:48 UTC · reviewed

Magnitude
2.6micro
local magnitude (Richter) (ml)
Depth
35 km
Status
Reviewed
Origin time
2026-09-02 11:49:23 UTC
Epicentre
51.998° N, 169.405° 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.

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 Survey2.6 ml35 km52.00° N, 169.41° W–Reviewed

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 120 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 35 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.6 releases about 32× the energy of M1.6, and its waves are about 10× taller on a seismogram. Energy: 120 kg of TNT vs 4 kg of TNT.

Each square is the energy of one M1.6. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

172 later earthquakes within 30 km; the largest was M6.3 25 days ago. 52 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.715.235
6.903.210
7.182.735
7.773.310
15.753.735
23.476.321
23.564.217
23.595.146
23.663.420
23.673.413
23.733.510
23.813.113
23.833.44
23.844.910
24.063.611
24.292.610
24.443.123
24.592.911
24.845.035
24.983.012
25.153.110
25.213.110
25.235.210
25.523.610
25.634.110
25.863.410
26.222.610
26.293.010
26.443.07
26.473.210
26.644.135
26.782.710
26.844.235
27.122.710
27.582.510
27.884.535
28.052.510
28.262.717
28.302.920
28.374.835
28.442.710
28.952.710
29.053.010
29.082.810
29.502.823
29.863.110
30.182.811
30.743.724
30.892.87
30.945.310
31.133.410
31.292.77
31.453.010
31.562.510
31.602.610
32.323.035
32.433.725
32.535.410
32.844.410
34.842.88
34.873.018
34.883.310
35.062.710
35.083.310
35.393.010
35.602.610
35.692.510
36.082.811
36.132.910
36.133.010
36.212.610
36.572.810
37.442.916
37.672.97
37.813.010
37.973.310
38.012.810
38.023.810
38.162.510
38.273.010
38.293.925
38.502.510
38.542.610
38.582.88
38.843.010
39.033.019
39.722.824
39.763.79
40.402.830
40.823.54
41.652.610
41.802.511
42.382.610
43.302.716
43.602.810
44.122.710
44.712.635
44.912.711
45.603.512
46.573.215
47.802.711
50.322.810
50.844.035
51.742.910
62.193.129
63.143.217
63.453.010
63.902.810
64.492.727
66.482.710
69.332.714
70.152.720
72.632.810
73.102.87
76.423.020
78.184.929
85.292.88
88.553.825
88.622.922
89.352.810
91.992.821
95.482.917
96.692.818
99.163.110
99.653.910
105.422.711
106.852.711
107.862.76
108.052.813
110.643.210
111.492.612
117.432.711
118.962.85
120.463.218
121.272.713
121.422.722
122.482.735
139.033.015
140.393.28
140.462.95
150.113.210
150.183.410
151.052.710
154.292.914
155.243.38
155.322.77
155.473.09
155.632.713
156.552.712
160.712.611
182.682.511
207.073.411
210.532.98
211.582.718
211.682.719
220.362.614
222.593.135
246.453.335
251.442.539
253.952.73
268.092.85
272.862.716
299.042.710
308.892.98
317.942.952
318.192.818
357.382.714
373.303.825
385.503.245
408.914.041
426.133.211
426.192.910
  1. 6.3Nikolski, Alaska09-03 11:17
  2. 5.4Nikolski, Alaska09-03 20:21
  3. 5.3Nikolski, Alaska09-03 18:45
  4. 5.2Nikolski, Alaska09-02 12:32
  5. 5.2Nikolski, Alaska09-03 13:03
  6. 5.1Nikolski, Alaska09-03 11:24
  7. 5.0Nikolski, Alaska09-03 12:39
  8. 4.9Nikolski, Alaska09-03 11:39
  9. 4.9Nikolski, Alaska09-05 18:00
  10. 4.8Nikolski, Alaska09-03 16:11
  11. 4.5Nikolski, Alaska09-03 15:42
  12. 4.4Nikolski, Alaska09-03 20:40
  13. 4.2Nikolski, Alaska09-03 11:22
  14. 4.2Nikolski, Alaska09-03 14:39
  15. 4.1Nikolski, Alaska09-03 13:27
  16. 4.1Nikolski, Alaska09-03 14:27
  17. 4.0Nikolski, Alaska09-04 14:39
  18. 4.0Nikolski, Alaska09-19 12:44
  19. 3.9Nikolski, Alaska09-04 02:06
  20. 3.9Nikolski, Alaska09-06 15:28
  21. 3.8Nikolski, Alaska09-04 01:50
  22. 3.8Nikolski, Alaska09-06 04:22
  23. 3.8Nikolski, Alaska09-18 01:07
  24. 3.7Nikolski, Alaska09-03 03:34
  25. 3.7Nikolski, Alaska09-03 18:33

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 us7000te42. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS (usgs:us7000te42). Cite as: SeismoAtlas, “M2.6 earthquake – Nikolski, Alaska”, https://seismoatlas.com/earthquake/us7000te42-m2-6-earthquake-nikolski-alaska, data from USGS.

JSON: /api/v1/events/us7000te42. SeismoAtlas is not an official warning service.