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SeismoAtlas

M1.9 earthquake 84 km W of Homer, Alaska, United States

A magnitude 1.9 earthquake struck 84 km W of Homer, Alaska, United States at 19:08 local time (03:08 UTC) on 25 Sept 2026, at a depth of 102 km, according to USGS.

Data: USGS · updated 2026-10-02 20:19 UTC · reviewed

Magnitude
1.9micro
local magnitude (Richter) (ml)
Depth
102.2 km
Status
Reviewed
Origin time
2026-09-26 03:08:11 UTC
Local: 25 Sept 2026, 19:08:11 (America/Anchorage)
Epicentre
59.708° N, 153.038° 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. 5,51584 kmINot felt
KalifornskyAlaska, United States · pop. 7,850125 kmINot felt
AnchorageAlaska, United States · pop. 289,600240 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 ml102.2 km59.71° N, 153.04° 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 102 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

26 later earthquakes within 30 km; the largest was M3.6 8 days ago. 11 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.9

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
12.572.4124
37.832.7128
39.56-0.35
42.302.288
45.923.1138
49.071.8120
53.961.7107
56.401.9125
61.603.687
106.55-0.92
106.661.8126
111.162.0154
119.042.2129
123.011.599
140.160.433
143.731.983
169.04-0.83
191.492.080
204.812.4133
208.911.894
218.261.9107
226.160.55
228.881.8139
250.341.788
255.200.87
256.051.097
  1. 3.657 km W of Homer, Alaska, United States09-28 16:44
  2. 3.1101 km WNW of Homer, Alaska, United States09-28 01:03
  3. 2.787 km WNW of Homer, Alaska, United States09-27 16:58
  4. 2.485 km WNW of Homer, Alaska, United States09-26 15:42
  5. 2.499 km WNW of Homer, Alaska, United States10-04 15:56
  6. 2.264 km W of Homer, Alaska, United States09-27 21:26
  7. 2.299 km WNW of Homer, Alaska, United States10-01 02:10
  8. 2.0103 km WNW of Homer, Alaska, United States09-30 18:17
  9. 2.069 km WSW of Homer, Alaska, United States10-04 02:37
  10. 1.997 km WNW of Homer, Alaska, United States09-28 11:32
  11. 1.973 km W of Homer, Alaska, United States10-02 02:52
  12. 1.992 km W of Homer, Alaska, United States10-05 05:23
  13. 1.899 km WNW of Homer, Alaska, United States09-28 04:12
  14. 1.898 km W of Homer, Alaska, United States09-30 13:47
  15. 1.860 km WNW of Homer, Alaska, United States10-04 20:03
  16. 1.8100 km WNW of Homer, Alaska, United States10-05 16:01
  17. 1.787 km W of Homer, Alaska, United States09-28 09:05
  18. 1.771 km W of Homer, Alaska, United States10-06 13:28
  19. 1.577 km W of Homer, Alaska, United States10-01 06:08
  20. 1.077 km WNW of Homer, Alaska, United States10-06 19:11
  21. 0.8101 km WNW of Homer, Alaska, United States10-06 18:19
  22. 0.598 km WNW of Homer, Alaska, United States10-05 13:17
  23. 0.489 km WNW of Homer, Alaska, United States10-01 23:18
  24. -0.399 km WNW of Homer, Alaska, United States09-27 18:41
  25. -0.894 km WNW of Homer, Alaska, United States10-03 04:10

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Reports on SeismoAtlas

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Event id aka2026tbgdmi. First recorded here 2 Oct 2026, 20:32:25 UTC. Solutions: USGS · AK (usgs:aka2026tbgdmi). Cite as: SeismoAtlas, “M1.9 earthquake 84 km W of Homer, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026tbgdmi-m1-9-earthquake-84-km-w-of-homer-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026tbgdmi. SeismoAtlas is not an official warning service.