M1.8 earthquake 73 km WNW of Homer, Alaska, United States
A magnitude 1.8 earthquake struck 73 km WNW of Homer, Alaska, United States at 00:25 local time (08:25 UTC) on 1 Oct 2026, at a depth of 99 km, according to USGS. The solution is preliminary and may be revised.
revised from M0.8
Data: USGS · updated 2026-10-01 08:27 UTC · automatic solution
- Magnitude
- 1.8micro
local magnitude (Richter) (ml)
revised from 0.8 - Depth
- 98.8 km
- Status
- Automatic
- Origin time
- 2026-10-01 08:25:11 UTC
- Local: 1 Oct 2026, 00:25:11 (America/Anchorage)
- Epicentre
- 59.998° N, 152.650° 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
| Place | Distance | Est. shaking |
|---|---|---|
| HomerAlaska, United States · pop. 5,515 | 73 km | INot felt |
| KalifornskyAlaska, United States · pop. 7,850 | 89 km | INot felt |
| AnchorageAlaska, United States · pop. 289,600 | 202 km | INot 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.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGS · AKheadlineAlaska Earthquake Center via U.S. Geological Survey | 1.8 mlwas 0.8 | 98.8 km | 60.00° N, 152.65° W | – | Automatic · 1 revision |
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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 8 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 99 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.
M1.8 releases about 16× the energy of M1.0, and its waves are about 6.3× taller on a seismogram. Energy: 8 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
65 later earthquakes within 30 km; the largest was M3.0 1 day ago. 58 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M1.8
65 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 0.07 | -0.5 | 0 |
| 3.08 | -0.8 | -1 |
| 8.27 | -1.0 | 1 |
| 11.00 | -0.8 | 1 |
| 11.06 | 2.6 | 100 |
| 11.68 | -0.7 | 2 |
| 12.24 | 2.1 | 112 |
| 14.88 | 0.4 | 33 |
| 14.94 | 1.0 | 46 |
| 15.84 | 1.9 | 145 |
| 16.22 | -0.9 | 2 |
| 16.80 | -0.7 | 1 |
| 19.42 | -1.1 | 1 |
| 20.11 | 1.7 | 125 |
| 21.99 | -1.2 | 0 |
| 23.37 | -0.4 | -2 |
| 24.13 | -0.8 | 2 |
| 25.56 | -1.2 | 0 |
| 26.22 | -1.1 | 1 |
| 26.38 | -1.0 | 2 |
| 26.61 | 0.3 | 5 |
| 27.66 | -0.9 | 6 |
| 32.70 | -0.5 | -3 |
| 35.86 | -0.7 | 2 |
| 37.27 | -1.1 | -2 |
| 37.34 | -0.9 | 1 |
| 37.49 | -0.2 | 5 |
| 37.53 | -0.5 | 0 |
| 38.57 | -1.0 | -1 |
| 39.50 | -0.8 | 0 |
| 40.31 | -0.5 | 1 |
| 40.96 | -0.3 | 0 |
| 43.04 | 0.7 | 5 |
| 43.75 | -0.8 | 3 |
| 46.73 | 0.5 | 5 |
| 47.12 | 1.5 | 103 |
| 47.32 | 0.6 | 5 |
| 48.27 | 0.8 | 96 |
| 69.88 | -0.1 | 1 |
| 73.85 | -0.6 | -2 |
| 74.81 | 1.3 | 160 |
| 79.99 | -0.9 | -2 |
| 81.44 | -0.8 | 1 |
| 83.63 | 1.8 | 94 |
| 93.55 | -0.9 | 1 |
| 96.12 | 1.2 | 118 |
| 96.18 | -0.1 | -1 |
| 96.42 | 0.4 | 5 |
| 98.69 | 3.0 | 105 |
| 99.75 | 2.6 | 125 |
| 100.37 | 0.7 | 5 |
| 103.84 | 0.3 | 5 |
| 104.72 | 0.2 | 1 |
| 105.01 | 0.3 | 0 |
| 112.27 | -1.3 | 3 |
| 112.32 | 0.4 | 5 |
| 115.79 | -0.8 | 5 |
| 120.99 | -0.8 | 0 |
| 121.28 | 0.6 | 100 |
| 121.68 | -0.6 | 2 |
| 123.12 | -0.9 | 1 |
| 124.40 | -0.9 | 1 |
| 124.69 | -1.2 | 0 |
| 124.94 | -0.9 | 2 |
| 130.77 | 1.0 | 97 |
- 3.069 km WSW of Kalifornsky, Alaska, United States10-05 11:06
- 2.668 km NW of Homer, Alaska, United States10-01 19:28
- 2.695 km NW of Homer, Alaska, United States10-05 12:10
- 2.181 km NW of Homer, Alaska, United States10-01 20:39
- 1.9100 km WNW of Homer, Alaska, United States10-02 00:15
- 1.860 km WNW of Homer, Alaska, United States10-04 20:03
- 1.783 km WSW of Kalifornsky, Alaska, United States10-02 04:31
- 1.585 km WNW of Homer, Alaska, United States10-03 07:32
- 1.368 km WSW of Kalifornsky, Alaska, United States10-04 11:13
- 1.292 km WNW of Homer, Alaska, United States10-05 08:32
- 1.093 km WNW of Homer, Alaska, United States10-01 23:21
- 1.077 km WNW of Homer, Alaska, United States10-06 19:11
- 0.880 km WNW of Homer, Alaska, United States10-03 08:41
- 0.796 km WNW of Homer, Alaska, United States10-03 03:27
- 0.792 km WNW of Homer, Alaska, United States10-05 12:47
- 0.696 km WNW of Homer, Alaska, United States10-03 07:44
- 0.677 km WSW of Kalifornsky, Alaska, United States10-06 09:41
- 0.594 km WNW of Homer, Alaska, United States10-03 07:08
- 0.489 km WNW of Homer, Alaska, United States10-01 23:18
- 0.497 km WNW of Homer, Alaska, United States10-05 08:50
- 0.498 km WNW of Homer, Alaska, United States10-06 00:44
- 0.396 km WNW of Homer, Alaska, United States10-02 11:01
- 0.394 km WNW of Homer, Alaska, United States10-05 16:15
- 0.398 km WNW of Homer, Alaska, United States10-05 17:25
- 0.2100 km WNW of Homer, Alaska, United States10-05 17:08
Did you feel it?
Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.
Reports on SeismoAtlas
No reports yet.
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Event id aka2026tkwupd. First recorded here 1 Oct 2026, 08:27:33 UTC. Solutions: USGS · AK (usgs:aka2026tkwupd). Cite as: SeismoAtlas, “M1.8 earthquake 73 km WNW of Homer, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026tkwupd-m1-8-earthquake-73-km-wnw-of-homer-alaska-united-states, data from USGS.
JSON: /api/v1/events/aka2026tkwupd. SeismoAtlas is not an official warning service.