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SeismoAtlas

M2.7 earthquake – Nikolski, Alaska

A magnitude 2.7 earthquake struck in the Nikolski, Alaska region at 08:16 UTC on 2 Sept 2026, at a depth of 5 km, according to USGS.

Data: USGS · updated 2026-09-03 03:19 UTC · reviewed

Magnitude
2.7micro
local magnitude (Richter) (ml)
Depth
5 km
Status
Reviewed
Origin time
2026-09-02 08:16:10 UTC
Epicentre
52.194° N, 169.122° 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 11 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 · AK, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · AKheadlineAlaska Earthquake Center via U.S. Geological Survey2.7 ml5 km52.19° N, 169.12° W–Reviewed

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How big was it?

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

It released roughly the energy of 169 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 5 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M2.7 releases about 32× the energy of M1.7, and its waves are about 10× taller on a seismogram. Energy: 169 kg of TNT vs 5 kg of TNT.

Each square is the energy of one M1.7. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

199 later earthquakes within 30 km; the largest was M6.3 25 days ago. 46 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.7

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.323.311
0.442.610
0.663.610
0.802.710
1.074.010
1.723.77
1.792.910
3.412.810
3.552.635
4.265.235
10.463.210
10.742.735
11.333.310
19.303.735
27.026.321
27.114.217
27.155.146
27.213.420
27.233.413
27.293.510
27.363.113
27.383.44
27.394.910
27.623.611
27.852.610
27.993.123
28.152.911
28.395.035
28.543.012
28.703.110
28.795.210
29.073.610
29.184.110
29.413.410
29.682.610
29.772.610
29.843.010
29.882.817
29.993.07
30.033.210
30.194.135
30.394.235
30.672.710
31.132.510
31.434.535
31.612.510
31.812.717
31.852.920
31.872.610
31.924.835
31.992.710
32.213.67
32.244.247
32.502.710
32.603.010
32.632.810
33.052.823
33.413.110
33.732.811
34.303.724
34.392.610
34.442.87
34.495.310
34.622.624
34.683.410
34.852.77
35.013.010
35.112.510
35.194.037
35.873.035
35.983.725
36.085.410
36.105.033
36.263.838
36.404.410
36.622.615
36.682.812
38.342.810
38.392.88
38.433.310
38.643.310
38.943.010
39.102.723
39.162.610
39.252.510
39.642.811
39.682.910
39.762.610
40.992.916
41.222.97
41.363.010
41.523.310
41.562.810
41.573.810
41.722.510
41.833.010
41.853.925
42.052.510
42.092.610
42.142.88
42.393.010
43.272.824
43.313.79
43.422.824
44.383.54
44.832.812
44.912.710
45.212.610
45.352.511
45.932.610
46.592.81
46.852.716
47.152.810
47.672.710
48.042.75
48.272.635
48.462.711
48.732.722
49.153.512
50.133.215
51.352.711
51.782.635
53.882.810
54.404.035
54.613.135
57.222.625
65.743.129
66.693.217
67.003.010
67.452.810
67.902.535
68.052.727
70.032.710
72.882.714
73.712.720
76.182.810
78.563.07
79.892.75
79.973.020
81.734.929
81.922.820
88.842.88
92.103.825
92.172.922
92.902.810
95.552.821
96.792.91
99.032.917
100.242.818
102.713.110
103.203.910
108.972.711
110.402.711
111.602.813
114.203.210
115.052.612
120.982.711
124.822.713
124.982.722
126.032.735
142.583.015
143.953.28
144.012.95
153.663.210
153.733.410
154.182.610
154.602.710
157.852.914
158.774.046
158.803.38
158.882.77
159.033.09
159.192.713
160.112.712
160.133.650
164.262.611
186.232.511
194.112.718
200.062.735
210.623.411
214.092.98
215.132.718
215.232.719
223.912.614
226.153.135
250.013.335
271.652.85
276.412.716
276.772.935
302.602.710
312.452.98
321.492.952
360.932.714
376.863.825
412.464.041
429.683.211
429.742.910
438.972.710
589.254.035
  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. 5.0Nikolski, Alaska09-03 20:22
  9. 4.9Nikolski, Alaska09-03 11:39
  10. 4.9Nikolski, Alaska09-05 18:00
  11. 4.8Nikolski, Alaska09-03 16:11
  12. 4.5Nikolski, Alaska09-03 15:42
  13. 4.4Nikolski, Alaska09-03 20:40
  14. 4.2Nikolski, Alaska09-03 11:22
  15. 4.2Nikolski, Alaska09-03 14:39
  16. 4.2Nikolski, Alaska09-03 16:30
  17. 4.1Nikolski, Alaska09-03 13:27
  18. 4.1Nikolski, Alaska09-03 14:27
  19. 4.0Nikolski, Alaska09-02 09:20
  20. 4.0Nikolski, Alaska09-03 19:27
  21. 4.0Nikolski, Alaska09-04 14:39
  22. 4.0Nikolski, Alaska09-08 23:02
  23. 4.0Nikolski, Alaska09-19 12:44
  24. 4.0Fox Islands, Aleutian Islands09-26 21:31
  25. 3.9Nikolski, Alaska09-04 02:06

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Reports on SeismoAtlas

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Event id aka2026rjhwxd. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS · AK (usgs:aka2026rjhwxd). Cite as: SeismoAtlas, “M2.7 earthquake – Nikolski, Alaska”, https://seismoatlas.com/earthquake/aka2026rjhwxd-m2-7-earthquake-nikolski-alaska, data from USGS.

JSON: /api/v1/events/aka2026rjhwxd. SeismoAtlas is not an official warning service.