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M1.5 earthquake 27 km NW of Homer, Alaska, United States

A magnitude 1.5 earthquake struck 27 km NW of Homer, Alaska, United States at 09:15 local time (17:15 UTC) on 24 Sept 2026, at a depth of 60 km, according to USGS. The solution is preliminary and may be revised.

Data: USGS · updated 2026-09-24 17:16 UTC · automatic solution

Magnitude
1.5micro
local magnitude (Richter) (ml)
Depth
60.1 km
Status
Automatic
Origin time
2026-09-24 17:15:28 UTC
Local: 24 Sept 2026, 09:15:28 (America/Anchorage)
Epicentre
59.828° N, 151.863° 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

Distance and estimated shaking at nearby places
PlaceDistanceEst. shaking
HomerAlaska, United States · pop. 5,51527 kmINot felt
KalifornskyAlaska, United States · pop. 7,85073 kmINot felt
AnchorageAlaska, United States · pop. 289,600188 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.

AgencyMagnitudeDepthEpicentreTime offsetStatus
USGS · AKheadlineAlaska Earthquake Center via U.S. Geological Survey1.5 ml60.1 km59.83° N, 151.86° W–Automatic

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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 3 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 60 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.5 releases about 5.6× the energy of M1.0, and its waves are about 3.2× taller on a seismogram. Energy: 3 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

4 later earthquakes within 30 km; the largest was M2.2 3 days ago. 3 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.5

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
27.492.269
73.242.191
81.842.068
92.661.758
  1. 2.237 km N of Homer, Alaska, United States09-25 20:44
  2. 2.152 km NW of Homer, Alaska, United States09-27 18:29
  3. 2.040 km WNW of Homer, Alaska, United States09-28 03:05
  4. 1.720 km NNE of Homer, Alaska, United States09-28 13:55

Did you feel it?

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Reports on SeismoAtlas

No reports yet.

Event id aka2026syqizg. First recorded here 28 Sept 2026, 17:32:10 UTC. Solutions: USGS · AK (usgs:aka2026syqizg). Cite as: SeismoAtlas, “M1.5 earthquake 27 km NW of Homer, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026syqizg-m1-5-earthquake-27-km-nw-of-homer-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026syqizg. SeismoAtlas is not an official warning service.