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SeismoAtlas

M2.7 earthquake – Nikolski, Alaska

A magnitude 2.7 earthquake struck in the Nikolski, Alaska region at 19:00 UTC on 2 Sept 2026, at a depth of 35 km, according to USGS.

Data: USGS · updated 2026-09-04 13:45 UTC · reviewed

Magnitude
2.7micro
local magnitude (Richter) (ml)
Depth
34.5 km
Status
Reviewed
Origin time
2026-09-02 19:00:20 UTC
Epicentre
52.153° N, 169.455° 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 Survey2.7 ml34.5 km52.15° N, 169.46° 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 35 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

184 later earthquakes within 30 km; the largest was M6.3 25 days ago. 60 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.7

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.593.310
8.573.735
16.286.321
16.374.217
16.415.146
16.473.420
16.493.413
16.553.510
16.633.113
16.643.44
16.654.910
16.883.611
17.112.610
17.263.123
17.412.911
17.655.035
17.803.012
17.973.110
18.055.210
18.333.610
18.454.110
18.683.410
18.942.610
19.042.610
19.113.010
19.142.817
19.263.07
19.293.210
19.454.135
19.654.235
19.942.710
20.402.510
20.694.535
20.872.510
21.082.717
21.142.610
21.184.835
21.262.710
21.504.247
21.772.710
21.873.010
21.892.810
22.322.823
22.683.110
22.992.811
23.563.724
23.662.610
23.712.87
23.765.310
23.953.410
24.112.77
24.273.010
24.382.510
24.464.037
25.143.035
25.243.725
25.355.410
25.523.838
25.664.410
25.882.615
25.942.812
27.602.810
27.662.88
27.693.018
27.703.310
27.882.710
27.903.310
28.012.535
28.213.010
28.372.723
28.422.610
28.512.510
28.902.811
28.942.910
29.022.610
30.252.916
30.492.97
30.633.010
30.793.310
30.832.810
30.843.810
30.982.510
31.093.010
31.113.925
31.312.510
31.352.610
31.663.010
31.843.019
32.542.824
32.682.824
33.222.830
33.643.54
34.102.812
34.182.710
34.472.610
34.622.511
35.202.610
35.852.81
36.112.716
36.422.810
36.942.710
37.532.635
37.722.711
37.992.722
38.423.512
39.393.215
40.622.711
41.042.635
43.142.810
43.664.035
44.562.910
46.482.625
55.013.129
55.953.217
56.273.010
56.722.810
57.162.535
57.312.727
59.302.710
62.142.714
62.972.720
65.452.810
69.152.75
69.233.020
71.004.929
71.192.820
78.112.88
81.373.825
81.442.922
82.162.810
84.812.821
86.062.91
88.102.814
88.302.917
89.512.818
91.983.110
92.463.910
98.232.711
99.672.711
100.872.813
103.463.210
104.312.612
110.252.711
114.082.713
114.242.722
115.302.735
131.843.015
133.213.28
133.272.95
142.923.210
143.003.410
143.452.610
143.872.710
147.112.914
148.044.046
148.063.38
148.142.77
148.293.09
148.452.713
149.372.712
149.393.650
153.532.611
189.332.735
199.893.411
203.352.98
204.392.718
204.492.719
213.182.614
215.413.135
239.273.335
244.262.539
265.682.716
266.042.935
291.862.710
301.712.98
310.762.952
311.012.818
350.192.714
366.123.825
378.323.245
401.734.041
418.953.211
419.012.910
578.524.035
  1. 6.3Nikolski, Alaska09-03 11:17
  2. 5.4Nikolski, Alaska09-03 20:21
  3. 5.3Nikolski, Alaska09-03 18:45
  4. 5.2Nikolski, Alaska09-03 13:03
  5. 5.1Nikolski, Alaska09-03 11:24
  6. 5.0Nikolski, Alaska09-03 12:39
  7. 4.9Nikolski, Alaska09-03 11:39
  8. 4.9Nikolski, Alaska09-05 18:00
  9. 4.8Nikolski, Alaska09-03 16:11
  10. 4.5Nikolski, Alaska09-03 15:42
  11. 4.4Nikolski, Alaska09-03 20:40
  12. 4.2Nikolski, Alaska09-03 11:22
  13. 4.2Nikolski, Alaska09-03 14:39
  14. 4.2Nikolski, Alaska09-03 16:30
  15. 4.1Nikolski, Alaska09-03 13:27
  16. 4.1Nikolski, Alaska09-03 14:27
  17. 4.0Nikolski, Alaska09-03 19:27
  18. 4.0Nikolski, Alaska09-04 14:39
  19. 4.0Nikolski, Alaska09-08 23:02
  20. 4.0Nikolski, Alaska09-19 12:44
  21. 4.0Fox Islands, Aleutian Islands09-26 21:31
  22. 3.9Nikolski, Alaska09-04 02:06
  23. 3.9Nikolski, Alaska09-06 15:28
  24. 3.8Nikolski, Alaska09-03 20:31
  25. 3.8Nikolski, Alaska09-04 01:50

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 us7000te57. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS (usgs:us7000te57). Cite as: SeismoAtlas, “M2.7 earthquake – Nikolski, Alaska”, https://seismoatlas.com/earthquake/us7000te57-m2-7-earthquake-nikolski-alaska, data from USGS.

JSON: /api/v1/events/us7000te57. SeismoAtlas is not an official warning service.