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M1.0 earthquake 102 km WSW of Kalifornsky, Alaska, United States

A magnitude 1.0 earthquake struck 102 km WSW of Kalifornsky, Alaska, United States at 07:24 local time (15:24 UTC) on 29 Sept 2026, at a depth of 68 km, according to USGS. The solution is preliminary and may be revised.

Data: USGS · updated 2026-09-29 15:25 UTC · automatic solution

Magnitude
1.0micro
local magnitude (Richter) (ml)
Depth
68 km
Status
Automatic
Origin time
2026-09-29 15:24:29 UTC
Local: 29 Sept 2026, 07:24:29 (America/Anchorage)
Epicentre
60.175° N, 153.083° W

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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
KalifornskyAlaska, United States · pop. 7,850102 kmINot felt
HomerAlaska, United States · pop. 5,515104 kmINot felt
AnchorageAlaska, United States · pop. 289,600209 kmINot felt

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 · AK.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · AKheadlineAlaska Earthquake Center via U.S. Geological Survey1.0 ml68 km60.17° N, 153.08° W–Automatic

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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 477 g 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 68 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

The same size.

Each square is the energy of one M1.0. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

88 later earthquakes within 30 km; the largest was M2.6 1 day ago. 52 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.0

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
3.54-1.03
8.23-0.70
9.050.55
9.74-0.81
11.69-1.1-2
17.61-0.90
20.66-0.83
22.040.55
22.28-0.92
22.930.55
23.23-1.0-2
23.61-0.41
24.65-0.91
26.882.0154
29.44-1.2-2
31.090.85
33.052.1106
33.18-0.30
33.62-0.61
34.390.833
34.44-0.60
40.301.9132
41.09-0.50
44.09-0.8-1
44.490.626
49.28-1.01
52.01-0.81
52.70-0.72
53.262.1112
55.961.046
56.370.85
56.851.9145
57.23-0.92
57.81-0.71
60.43-1.11
61.121.7125
63.00-1.20
64.38-0.4-2
65.14-0.82
66.57-1.20
67.23-1.11
67.39-1.02
67.620.35
68.67-0.96
73.71-0.5-3
76.87-0.72
78.28-1.1-2
78.35-0.91
78.50-0.25
78.54-0.50
79.58-1.0-1
80.51-0.80
81.33-0.51
81.97-0.30
84.050.75
84.77-0.83
87.740.55
88.131.5103
88.330.65
89.280.896
106.442.2128
110.89-0.11
114.86-0.6-2
118.420.85
121.01-0.9-2
122.46-0.81
134.56-0.91
137.131.2118
137.19-0.1-1
137.430.45
140.762.6125
141.380.75
141.880.55
144.850.35
145.730.21
146.020.30
153.28-1.33
153.330.45
156.80-0.85
159.730.642
162.00-0.80
162.290.6100
162.69-0.62
164.13-0.91
165.41-0.91
165.70-1.20
165.96-0.92
177.452.0172
  1. 2.695 km NW of Homer, Alaska, United States10-05 12:10
  2. 2.2101 km WSW of Kalifornsky, Alaska, United States10-04 01:51
  3. 2.178 km WSW of Kalifornsky, Alaska, United States10-01 00:27
  4. 2.181 km NW of Homer, Alaska, United States10-01 20:39
  5. 2.0103 km WNW of Homer, Alaska, United States09-30 18:17
  6. 2.0113 km WNW of Homer, Alaska, United States10-07 00:51
  7. 1.993 km W of Kalifornsky, Alaska, United States10-01 07:42
  8. 1.9100 km WNW of Homer, Alaska, United States10-02 00:15
  9. 1.783 km WSW of Kalifornsky, Alaska, United States10-02 04:31
  10. 1.585 km WNW of Homer, Alaska, United States10-03 07:32
  11. 1.292 km WNW of Homer, Alaska, United States10-05 08:32
  12. 1.093 km WNW of Homer, Alaska, United States10-01 23:21
  13. 0.8100 km WNW of Homer, Alaska, United States09-30 22:30
  14. 0.8119 km WNW of Homer, Alaska, United States10-01 01:48
  15. 0.8122 km W of Kalifornsky, Alaska, United States10-01 23:46
  16. 0.880 km WNW of Homer, Alaska, United States10-03 08:41
  17. 0.893 km W of Kalifornsky, Alaska, United States10-04 13:49
  18. 0.796 km WNW of Homer, Alaska, United States10-03 03:27
  19. 0.792 km WNW of Homer, Alaska, United States10-05 12:47
  20. 0.6108 km WNW of Homer, Alaska, United States10-01 11:53
  21. 0.696 km WNW of Homer, Alaska, United States10-03 07:44
  22. 0.682 km W of Kalifornsky, Alaska, United States10-06 07:08
  23. 0.677 km WSW of Kalifornsky, Alaska, United States10-06 09:41
  24. 0.596 km WNW of Homer, Alaska, United States09-30 00:27
  25. 0.596 km WNW of Homer, Alaska, United States09-30 13:27

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Reports on SeismoAtlas

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Event id aka2026thstpq. First recorded here 29 Sept 2026, 15:25:54 UTC. Solutions: USGS · AK (usgs:aka2026thstpq). Cite as: SeismoAtlas, “M1.0 earthquake 102 km WSW of Kalifornsky, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026thstpq-m1-0-earthquake-102-km-wsw-of-kalifornsky-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026thstpq. SeismoAtlas is not an official warning service.