M-0.2 earthquake 102 km WNW of Homer, Alaska, United States
A magnitude -0.2 earthquake struck 102 km WNW of Homer, Alaska, United States at 21:27 local time (05:27 UTC) on 21 Sept 2026, at a depth of 6 km, according to USGS.
Data: USGS · updated 2026-09-22 22:28 UTC · reviewed
- Magnitude
- -0.2micro
local magnitude (Richter) (ml) - Depth
- 6 km
- Status
- Reviewed
- Origin time
- 2026-09-22 05:27:43 UTC
- Local: 21 Sept 2026, 21:27:43 (America/Anchorage)
- Epicentre
- 60.015° N, 153.209° 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 | 102 km | INot felt |
| KalifornskyAlaska, United States · pop. 7,850 | 115 km | INot felt |
| AnchorageAlaska, United States · pop. 289,600 | 225 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 · AV, which has been reviewed by an analyst.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGS · AVheadlineAlaska Volcano Observatory via U.S. Geological Survey | -0.2 ml | 6 km | 60.01° N, 153.21° 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 8 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 6 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.
M1.0 releases about 61× the energy of M-0.2, and its waves are about 15× taller on a seismogram. Energy: 477 g of TNT vs 8 g of TNT.
Each square is the energy of one M-0.2. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
43 later earthquakes within 30 km; the largest was M3.1 1 day ago. 7 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M-0.2
43 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 5.99 | 1.4 | 92 |
| 10.37 | -0.6 | -2 |
| 11.10 | 0.2 | 2 |
| 11.95 | -0.8 | 0 |
| 12.67 | -0.2 | 0 |
| 16.03 | -0.5 | 0 |
| 16.91 | 2.2 | 149 |
| 17.85 | -0.7 | 2 |
| 19.05 | 1.9 | 136 |
| 20.31 | -0.3 | 0 |
| 34.70 | 1.4 | 87 |
| 36.18 | 2.8 | 101 |
| 37.14 | -0.6 | -1 |
| 37.78 | 2.1 | 135 |
| 40.09 | 1.6 | 142 |
| 44.54 | 1.5 | 126 |
| 46.71 | -0.4 | -3 |
| 48.19 | -0.5 | 2 |
| 50.01 | -0.3 | 5 |
| 50.41 | -0.8 | -2 |
| 53.15 | -0.6 | -1 |
| 53.48 | 0.6 | 5 |
| 53.57 | 1.9 | 135 |
| 56.19 | -1.1 | 0 |
| 56.84 | -0.6 | 1 |
| 58.60 | 0.4 | 5 |
| 59.88 | 0.0 | 6 |
| 60.92 | 0.3 | 15 |
| 64.06 | -0.4 | 3 |
| 65.43 | -0.5 | 2 |
| 68.46 | -0.3 | 6 |
| 69.00 | -0.9 | 1 |
| 94.04 | 2.3 | 134 |
| 97.04 | 0.1 | -2 |
| 106.24 | 2.4 | 124 |
| 130.34 | 1.7 | 119 |
| 131.51 | 2.6 | 128 |
| 138.94 | -0.7 | 0 |
| 139.60 | 3.1 | 138 |
| 144.00 | -0.4 | 3 |
| 147.67 | 0.2 | 12 |
| 148.39 | -0.4 | 6 |
| 159.30 | 0.6 | 4 |
- 3.1101 km WNW of Homer, Alaska, United States09-28 01:03
- 2.876 km WNW of Homer, Alaska, United States09-23 17:38
- 2.687 km WNW of Homer, Alaska, United States09-27 16:58
- 2.485 km WNW of Homer, Alaska, United States09-26 15:42
- 2.392 km WNW of Homer, Alaska, United States09-26 03:30
- 2.2104 km WNW of Homer, Alaska, United States09-22 22:22
- 2.1100 km WNW of Homer, Alaska, United States09-23 19:14
- 1.9101 km WNW of Homer, Alaska, United States09-23 00:30
- 1.9100 km W of Homer, Alaska, United States09-24 11:01
- 1.783 km NW of Homer, Alaska, United States09-27 15:47
- 1.6102 km W of Kalifornsky, Alaska, United States09-23 21:33
- 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
- 0.6112 km WNW of Homer, Alaska, United States09-24 10:56
- 0.696 km WNW of Homer, Alaska, United States09-28 20:45
- 0.496 km WNW of Homer, Alaska, United States09-24 16:03
- 0.3111 km WNW of Homer, Alaska, United States09-24 18:23
- 0.2101 km WNW of Homer, Alaska, United States09-28 09:07
- 0.293 km WNW of Homer, Alaska, United States09-22 16:33
- 0.196 km WNW of Homer, Alaska, United States09-26 06:29
- 0.088 km WNW of Homer, Alaska, United States09-24 17:20
- -0.296 km WNW of Homer, Alaska, United States09-22 18:07
- -0.394 km WNW of Homer, Alaska, United States09-25 01:55
- -0.3100 km WNW of Homer, Alaska, United States09-24 07:28
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 av94442991. First recorded here 28 Sept 2026, 17:32:12 UTC. Solutions: USGS · AV (usgs:av94442991). Cite as: SeismoAtlas, “M-0.2 earthquake 102 km WNW of Homer, Alaska, United States”, https://seismoatlas.com/earthquake/av94442991-m-0-2-earthquake-102-km-wnw-of-homer-alaska-united-states, data from USGS.
JSON: /api/v1/events/av94442991. SeismoAtlas is not an official warning service.