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SeismoAtlas

M2.7 earthquake – Nikolski, Alaska

A magnitude 2.7 earthquake struck in the Nikolski, Alaska region at 19:06 UTC on 3 Sept 2026, at a depth of 7 km, according to USGS.

Data: USGS · updated 2026-09-03 21:12 UTC · reviewed

Magnitude
2.7micro
local magnitude (Richter) (ml)
Depth
7.4 km
Status
Reviewed
Origin time
2026-09-03 19:06:53 UTC
Epicentre
52.142° N, 169.052° 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 9 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 ml7.4 km52.14° N, 169.05° 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 7 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

130 later earthquakes within 30 km; the largest was M5.4 25 days ago. 109 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.7

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
0.163.010
0.272.510
0.312.610
1.033.035
1.133.725
1.245.410
1.554.410
1.772.615
1.832.812
3.492.810
3.552.88
3.593.310
3.793.310
4.103.010
4.262.723
4.312.610
4.402.510
4.792.811
4.832.910
4.912.610
6.142.916
6.382.97
6.523.010
6.683.310
6.722.810
6.733.810
6.872.510
6.983.010
7.003.925
7.202.510
7.242.610
7.292.88
7.553.010
7.733.019
8.432.824
8.463.79
8.572.824
9.533.54
9.992.812
10.072.710
10.362.610
10.512.511
11.092.610
11.742.81
12.002.716
12.312.810
12.832.710
13.192.75
13.422.635
13.622.711
13.882.722
14.313.512
15.283.215
16.512.711
16.932.635
19.032.810
19.554.035
30.903.129
31.853.217
32.163.010
32.612.810
33.202.727
35.192.710
38.032.714
38.862.720
41.342.810
41.812.87
43.723.07
45.052.75
45.123.020
46.894.929
47.082.820
54.002.88
57.263.825
57.332.922
58.052.810
60.702.821
61.952.91
64.192.917
65.402.818
67.873.110
68.353.910
74.122.711
75.562.711
76.572.76
76.762.813
79.353.210
80.202.612
86.142.711
89.972.713
90.132.722
91.192.735
107.733.015
109.103.28
109.162.95
118.823.210
119.342.610
119.762.710
123.002.914
123.934.046
123.953.38
124.032.77
124.183.09
124.342.713
125.262.712
129.422.611
151.392.511
159.262.718
163.492.622
165.222.735
175.783.411
179.242.98
180.282.718
180.382.719
189.072.614
191.303.135
215.163.335
236.802.85
241.572.716
241.932.935
267.752.710
277.602.98
286.652.952
286.902.818
326.082.714
342.013.825
377.624.041
394.843.211
394.902.910
404.122.710
  1. 5.4Nikolski, Alaska09-03 20:21
  2. 4.9Nikolski, Alaska09-05 18:00
  3. 4.4Nikolski, Alaska09-03 20:40
  4. 4.0Nikolski, Alaska09-04 14:39
  5. 4.0Nikolski, Alaska09-08 23:02
  6. 4.0Nikolski, Alaska09-19 12:44
  7. 3.9Nikolski, Alaska09-04 02:06
  8. 3.9Nikolski, Alaska09-06 15:28
  9. 3.8Nikolski, Alaska09-04 01:50
  10. 3.8Nikolski, Alaska09-06 04:22
  11. 3.8Nikolski, Alaska09-18 01:07
  12. 3.7Nikolski, Alaska09-03 20:14
  13. 3.7Nikolski, Alaska09-04 03:34
  14. 3.5Nikolski, Alaska09-04 04:38
  15. 3.5Nikolski, Alaska09-04 09:25
  16. 3.4Nikolski, Alaska09-11 02:53
  17. 3.3Nikolski, Alaska09-03 22:42
  18. 3.3Nikolski, Alaska09-03 22:54
  19. 3.3Nikolski, Alaska09-04 01:47
  20. 3.3Nikolski, Alaska09-08 23:04
  21. 3.3Nikolski, Alaska09-12 18:16
  22. 3.2Nikolski, Alaska09-04 10:23
  23. 3.2Nikolski, Alaska09-05 02:57
  24. 3.2Nikolski, Alaska09-07 02:28
  25. 3.2Nikolski, Alaska09-08 08:13

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 aka2026rlzprc. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS · AK (usgs:aka2026rlzprc). Cite as: SeismoAtlas, “M2.7 earthquake – Nikolski, Alaska”, https://seismoatlas.com/earthquake/aka2026rlzprc-m2-7-earthquake-nikolski-alaska, data from USGS.

JSON: /api/v1/events/aka2026rlzprc. SeismoAtlas is not an official warning service.