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SeismoAtlas

M2.7 earthquake – Nikolski, Alaska

A magnitude 2.7 earthquake struck in the Nikolski, Alaska region at 09:04 UTC on 2 Sept 2026, at a depth of 10 km, according to USGS.

Data: USGS · updated 2026-09-24 12:41 UTC · reviewed

Magnitude
2.7micro
local magnitude (Richter) (ml)
Depth
10 km
Status
Reviewed
Origin time
2026-09-02 09:04:03 UTC
Epicentre
52.238° N, 169.138° 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 6 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 Survey2.7 ml10 km52.24° N, 169.14° W–Reviewed

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 10 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

180 later earthquakes within 30 km; the largest was M6.3 25 days ago. 50 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.7

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.274.010
0.923.77
0.992.910
2.612.810
3.475.235
9.663.210
9.942.735
10.533.310
18.513.735
26.226.321
26.314.217
26.355.146
26.413.420
26.433.413
26.493.510
26.563.113
26.583.44
26.594.910
26.823.611
27.052.610
27.193.123
27.352.911
27.595.035
27.743.012
27.913.110
27.995.210
28.273.610
28.394.110
28.613.410
28.882.610
28.982.610
29.053.010
29.082.817
29.193.07
29.233.210
29.394.135
29.594.235
29.872.710
30.342.510
30.634.535
30.812.510
31.012.717
31.072.610
31.124.835
31.202.710
31.444.247
31.712.710
31.803.010
31.832.810
32.262.823
32.613.110
32.932.811
33.503.724
33.602.610
33.642.87
33.695.310
33.753.435
33.822.624
33.883.410
34.052.77
34.213.010
34.312.510
34.394.037
35.083.035
35.183.725
35.295.410
35.315.033
35.463.838
35.604.410
35.822.615
35.882.812
37.542.810
37.602.88
37.643.310
37.843.310
37.952.535
38.143.010
38.312.723
38.362.610
38.842.811
38.882.910
38.962.610
40.192.916
40.432.97
40.573.010
40.733.310
40.922.510
41.033.010
41.053.925
41.252.510
41.603.010
42.622.824
43.583.54
44.032.812
44.122.710
44.412.610
44.562.511
45.792.81
46.052.716
46.352.810
46.872.710
47.242.75
47.472.635
47.662.711
47.932.722
48.353.512
49.333.215
50.562.711
50.982.635
53.082.810
53.604.035
53.813.135
56.422.625
64.943.129
65.893.217
66.213.010
66.652.810
67.102.535
67.252.727
69.232.710
72.082.714
72.912.720
75.382.810
77.763.07
79.092.75
79.173.020
80.934.929
81.132.820
88.052.88
91.372.922
92.102.810
94.752.821
95.992.91
98.242.917
102.403.910
108.172.711
109.602.711
110.812.813
113.403.210
114.252.612
120.182.711
124.022.713
124.182.722
125.242.735
141.783.015
143.153.28
143.212.95
152.863.210
152.933.410
153.382.610
153.812.710
157.052.914
157.984.046
158.003.38
158.082.77
158.233.09
158.392.713
159.312.712
159.333.650
163.462.611
185.432.511
193.312.718
199.272.735
209.833.411
213.292.98
223.112.614
225.353.135
249.213.335
254.202.539
275.612.716
275.982.935
311.652.98
320.702.952
360.132.714
376.063.825
411.674.041
428.883.211
428.942.910
438.172.710
588.454.035
  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

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 us7000te1s. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS (usgs:us7000te1s). Cite as: SeismoAtlas, “M2.7 earthquake – Nikolski, Alaska”, https://seismoatlas.com/earthquake/us7000te1s-m2-7-earthquake-nikolski-alaska, data from USGS.

JSON: /api/v1/events/us7000te1s. SeismoAtlas is not an official warning service.