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M2.6 earthquake 63 km WSW of Kalifornsky, Alaska, United States

A magnitude 2.6 earthquake struck 63 km WSW of Kalifornsky, Alaska, United States at 02:34 local time (10:34 UTC) on 3 Sept 2026, at a depth of 91 km, according to USGS.

Data: USGS · updated 2026-09-25 12:01 UTC · reviewed

Magnitude
2.6micro
local magnitude (Richter) (ml)
Depth
90.6 km
Status
Reviewed
Origin time
2026-09-03 10:34:13 UTC
Local: 3 Sept 2026, 02:34:13 (America/Anchorage)
Epicentre
60.124° N, 152.274° 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
KalifornskyAlaska, United States · pop. 7,85063 kmINot felt
HomerAlaska, United States · pop. 5,51567 kmINot felt
AnchorageAlaska, United States · pop. 289,600178 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 Survey2.6 ml90.6 km60.12° N, 152.27° 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 120 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 91 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.

M2.6 releases about 32× the energy of M1.6, and its waves are about 10× taller on a seismogram. Energy: 120 kg of TNT vs 4 kg of TNT.

Each square is the energy of one M1.6. Energy from log₁₀E = 1.5M + 4.8.

Aftershocks and nearby activity

12 later earthquakes within 30 km; the largest was M2.9 16 days ago. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
218.872.9103
395.362.695
423.932.778
456.881.492
463.720.9100
471.261.695
474.651.790
549.681.9103
551.162.3118
581.231.7119
583.932.191
592.092.095
  1. 2.967 km NW of Homer, Alaska, United States09-12 13:26
  2. 2.744 km WSW of Kalifornsky, Alaska, United States09-21 02:29
  3. 2.670 km WSW of Kalifornsky, Alaska, United States09-19 21:55
  4. 2.378 km WSW of Kalifornsky, Alaska, United States09-26 09:43
  5. 2.152 km NW of Homer, Alaska, United States09-27 18:29
  6. 2.074 km WSW of Kalifornsky, Alaska, United States09-28 02:39
  7. 1.969 km WSW of Kalifornsky, Alaska, United States09-26 08:15
  8. 1.774 km NW of Homer, Alaska, United States09-23 05:13
  9. 1.783 km NW of Homer, Alaska, United States09-27 15:47
  10. 1.652 km WSW of Kalifornsky, Alaska, United States09-23 01:50
  11. 1.475 km WNW of Homer, Alaska, United States09-22 11:26
  12. 0.976 km WSW of Kalifornsky, Alaska, United States09-22 18:17

Did you feel it?

Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.

Reports close 14 days after an earthquake.

Reports on SeismoAtlas

No reports yet.

Event id aka2026rlindp. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS · AK (usgs:aka2026rlindp). Cite as: SeismoAtlas, “M2.6 earthquake 63 km WSW of Kalifornsky, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026rlindp-m2-6-earthquake-63-km-wsw-of-kalifornsky-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026rlindp. SeismoAtlas is not an official warning service.