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M1.9 earthquake 97 km WNW of Homer, Alaska, United States

A magnitude 1.9 earthquake struck 97 km WNW of Homer, Alaska, United States at 03:32 local time (11:32 UTC) on 28 Sept 2026, at a depth of 125 km, according to USGS.

Data: USGS · updated 2026-09-29 22:57 UTC · reviewed

Magnitude
1.9micro
local magnitude (Richter) (ml)
Depth
125.1 km
Status
Reviewed
Origin time
2026-09-28 11:32:26 UTC
Local: 28 Sept 2026, 03:32:26 (America/Anchorage)
Epicentre
59.848° N, 153.234° 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
HomerAlaska, United States · pop. 5,51597 kmINot felt
KalifornskyAlaska, United States · pop. 7,850125 kmINot felt
AnchorageAlaska, United States · pop. 289,600238 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, which has been reviewed by an analyst.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · AKheadlineAlaska Earthquake Center via U.S. Geological Survey1.9 ml125.1 km59.85° N, 153.23° 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 11 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 125 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.

M1.9 releases about 22× the energy of M1.0, and its waves are about 7.9× taller on a seismogram. Energy: 11 kg of TNT vs 477 g of TNT.

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

Aftershocks and nearby activity

91 later earthquakes within 30 km; the largest was M2.4 2 days ago. 51 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
6.28-0.70
7.60-1.01
9.220.64
10.30-0.84
10.88-0.7-2
17.72-0.72
31.40-1.03
36.10-0.70
36.920.55
37.61-0.81
39.56-1.1-2
45.48-0.90
48.53-0.83
49.910.55
50.15-0.92
50.251.8126
50.800.55
51.10-1.0-2
51.48-0.41
52.52-0.91
54.752.0154
57.31-1.2-2
58.960.85
61.05-0.30
61.49-0.61
62.31-0.60
62.632.2129
66.611.599
68.95-0.50
71.96-0.8-1
77.15-1.01
79.87-0.81
80.56-0.72
83.760.433
83.821.046
84.721.9145
85.10-0.92
85.68-0.71
88.29-1.11
90.87-1.20
92.25-0.4-2
93.01-0.82
94.44-1.20
95.10-1.11
95.26-1.02
95.490.35
96.54-0.96
101.58-0.5-3
104.74-0.72
106.15-1.1-2
106.22-0.91
106.37-0.25
106.41-0.50
107.45-1.0-1
108.38-0.80
109.19-0.51
109.84-0.30
111.920.75
112.63-0.83
115.600.55
116.001.5103
116.200.65
138.76-0.11
142.73-0.6-2
148.402.4133
148.87-0.9-2
150.32-0.81
161.851.9107
162.43-0.91
164.991.2118
165.06-0.1-1
165.300.45
169.250.75
169.750.55
172.481.8139
172.720.35
173.590.21
173.890.30
181.15-1.33
181.200.45
184.67-0.85
189.86-0.80
190.56-0.62
191.99-0.91
193.28-0.91
193.56-1.20
193.82-0.92
193.941.788
198.790.87
199.651.097
205.312.0172
  1. 2.499 km WNW of Homer, Alaska, United States10-04 15:56
  2. 2.299 km WNW of Homer, Alaska, United States10-01 02:10
  3. 2.0103 km WNW of Homer, Alaska, United States09-30 18:17
  4. 2.0113 km WNW of Homer, Alaska, United States10-07 00:51
  5. 1.9100 km WNW of Homer, Alaska, United States10-02 00:15
  6. 1.992 km W of Homer, Alaska, United States10-05 05:23
  7. 1.898 km W of Homer, Alaska, United States09-30 13:47
  8. 1.8100 km WNW of Homer, Alaska, United States10-05 16:01
  9. 1.771 km W of Homer, Alaska, United States10-06 13:28
  10. 1.577 km W of Homer, Alaska, United States10-01 06:08
  11. 1.585 km WNW of Homer, Alaska, United States10-03 07:32
  12. 1.292 km WNW of Homer, Alaska, United States10-05 08:32
  13. 1.093 km WNW of Homer, Alaska, United States10-01 23:21
  14. 1.077 km WNW of Homer, Alaska, United States10-06 19:11
  15. 0.8100 km WNW of Homer, Alaska, United States09-30 22:30
  16. 0.8101 km WNW of Homer, Alaska, United States10-06 18:19
  17. 0.796 km WNW of Homer, Alaska, United States10-03 03:27
  18. 0.792 km WNW of Homer, Alaska, United States10-05 12:47
  19. 0.696 km WNW of Homer, Alaska, United States09-28 20:45
  20. 0.696 km WNW of Homer, Alaska, United States10-03 07:44
  21. 0.596 km WNW of Homer, Alaska, United States09-30 00:27
  22. 0.596 km WNW of Homer, Alaska, United States09-30 13:27
  23. 0.596 km WNW of Homer, Alaska, United States09-30 14:20
  24. 0.594 km WNW of Homer, Alaska, United States10-03 07:08
  25. 0.598 km WNW of Homer, Alaska, United States10-05 13:17

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Reports on SeismoAtlas

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Event id aka2026tfozvs. First recorded here 29 Sept 2026, 23:32:16 UTC. Solutions: USGS · AK (usgs:aka2026tfozvs). Cite as: SeismoAtlas, “M1.9 earthquake 97 km WNW of Homer, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026tfozvs-m1-9-earthquake-97-km-wnw-of-homer-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026tfozvs. SeismoAtlas is not an official warning service.