M2.5 earthquake 78 km WNW of Homer, Alaska, United States
A magnitude 2.5 earthquake struck 78 km WNW of Homer, Alaska, United States at 07:08 local time (15:08 UTC) on 15 Sept 2026, at a depth of 101 km, according to USGS.
Data: USGS · updated 2026-09-24 22:43 UTC · reviewed
- Magnitude
- 2.5micro
local magnitude (Richter) (ml) - Depth
- 100.9 km
- Status
- Reviewed
- Origin time
- 2026-09-15 15:08:30 UTC
- Local: 15 Sept 2026, 07:08:30 (America/Anchorage)
- Epicentre
- 59.978° N, 152.763° 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
| Place | Distance | Est. shaking |
|---|---|---|
| HomerAlaska, United States · pop. 5,515 | 78 km | INot felt |
| KalifornskyAlaska, United States · pop. 7,850 | 95 km | INot felt |
| AnchorageAlaska, United States · pop. 289,600 | 209 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, which has been reviewed by an analyst.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGS · AKheadlineAlaska Earthquake Center via U.S. Geological Survey | 2.5 ml | 100.9 km | 59.98° N, 152.76° W | – | Reviewed |
How big was it?
Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.
It released roughly the energy of 85 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 101 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.
M2.5 releases about 32× the energy of M1.5, and its waves are about 10× taller on a seismogram. Energy: 85 kg of TNT vs 3 kg of TNT.
Each square is the energy of one M1.5. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
50 later earthquakes within 30 km; the largest was M2.8 12 days ago. 1 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M2.5
50 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 9.11 | 2.8 | 81 |
| 102.79 | 2.6 | 95 |
| 108.28 | 2.6 | 99 |
| 114.01 | 2.5 | 139 |
| 148.86 | -1.1 | -2 |
| 151.27 | 2.4 | 106 |
| 154.04 | -0.3 | 2 |
| 156.61 | -0.3 | -1 |
| 158.32 | -0.2 | 6 |
| 164.31 | 1.4 | 92 |
| 164.80 | 1.8 | 88 |
| 168.69 | -0.6 | -2 |
| 169.42 | 0.2 | 2 |
| 170.28 | -0.8 | 0 |
| 170.99 | -0.2 | 0 |
| 171.15 | 0.9 | 100 |
| 174.35 | -0.5 | 0 |
| 176.17 | -0.7 | 2 |
| 177.37 | 1.9 | 136 |
| 178.63 | -0.3 | 0 |
| 182.08 | 1.7 | 90 |
| 187.06 | 2.8 | 94 |
| 193.02 | 1.4 | 87 |
| 194.50 | 2.8 | 101 |
| 195.46 | -0.6 | -1 |
| 196.10 | 2.1 | 135 |
| 202.86 | 1.5 | 126 |
| 205.03 | -0.4 | -3 |
| 206.51 | -0.5 | 2 |
| 208.33 | -0.3 | 5 |
| 208.73 | -0.8 | -2 |
| 211.47 | -0.6 | -1 |
| 214.51 | -1.1 | 0 |
| 215.16 | -0.6 | 1 |
| 216.92 | 0.4 | 5 |
| 218.20 | 0.0 | 6 |
| 222.38 | -0.4 | 3 |
| 223.75 | -0.5 | 2 |
| 226.78 | -0.3 | 6 |
| 227.32 | -0.9 | 1 |
| 252.36 | 2.3 | 134 |
| 255.36 | 0.1 | -2 |
| 257.11 | 1.9 | 103 |
| 264.56 | 2.4 | 124 |
| 288.66 | 1.7 | 119 |
| 289.83 | 2.6 | 128 |
| 291.36 | 2.1 | 91 |
| 294.30 | 2.2 | 88 |
| 299.52 | 2.0 | 95 |
| 317.62 | 0.6 | 4 |
- 2.854 km WNW of Homer, Alaska, United States09-16 00:14
- 2.869 km WNW of Homer, Alaska, United States09-23 10:12
- 2.876 km WNW of Homer, Alaska, United States09-23 17:38
- 2.670 km WSW of Kalifornsky, Alaska, United States09-19 21:55
- 2.671 km W of Homer, Alaska, United States09-20 03:25
- 2.687 km WNW of Homer, Alaska, United States09-27 16:58
- 2.597 km WSW of Kalifornsky, Alaska, United States09-20 09:09
- 2.474 km WNW of Homer, Alaska, United States09-21 22:25
- 2.485 km WNW of Homer, Alaska, United States09-26 15:42
- 2.392 km WNW of Homer, Alaska, United States09-26 03:30
- 2.264 km W of Homer, Alaska, United States09-27 21:26
- 2.1100 km WNW of Homer, Alaska, United States09-23 19:14
- 2.152 km NW of Homer, Alaska, United States09-27 18:29
- 2.074 km WSW of Kalifornsky, Alaska, United States09-28 02:39
- 1.9101 km WNW of Homer, Alaska, United States09-23 00:30
- 1.969 km WSW of Kalifornsky, Alaska, United States09-26 08:15
- 1.866 km WNW of Homer, Alaska, United States09-22 11:56
- 1.774 km NW of Homer, Alaska, United States09-23 05:13
- 1.783 km NW of Homer, Alaska, United States09-27 15:47
- 1.5101 km WNW of Homer, Alaska, United States09-24 02:00
- 1.475 km WNW of Homer, Alaska, United States09-22 11:26
- 1.473 km WNW of Homer, Alaska, United States09-23 16:09
- 0.976 km WSW of Kalifornsky, Alaska, United States09-22 18:17
- 0.696 km WNW of Homer, Alaska, United States09-28 20:45
- 0.496 km WNW of Homer, Alaska, United States09-24 16:03
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.
Event id aka2026shvxvf. First recorded here 28 Sept 2026, 17:32:11 UTC. Solutions: USGS · AK (usgs:aka2026shvxvf). Cite as: SeismoAtlas, “M2.5 earthquake 78 km WNW of Homer, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026shvxvf-m2-5-earthquake-78-km-wnw-of-homer-alaska-united-states, data from USGS.
JSON: /api/v1/events/aka2026shvxvf. SeismoAtlas is not an official warning service.