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SeismoAtlas

M2.6 earthquake 22 km W of Knik-Fairview, Alaska, United States

A magnitude 2.6 earthquake struck 22 km W of Knik-Fairview, Alaska, United States at 01:43 local time (09:43 UTC) on 21 Sept 2026, at a depth of 27 km, according to USGS. The solution is preliminary and may be revised.

1 reports to USGS “Did You Feel It?”

Data: USGS · updated 2026-09-21 16:53 UTC · automatic solution

Magnitude
2.6micro
local magnitude (Richter) (ml)
Depth
27.4 km
Status
Automatic
Origin time
2026-09-21 09:43:47 UTC
Local: 21 Sept 2026, 01:43:47 (America/Anchorage)
Epicentre
61.527° N, 150.011° 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
Knik-FairviewAlaska, United States · pop. 14,92322 kmINot felt
Meadow LakesAlaska, United States · pop. 7,57024 kmINot felt
Eagle RiverAlaska, United States · pop. 24,79333 kmINot felt
AnchorageAlaska, United States · pop. 289,60035 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 Survey2.6 ml27.4 km61.53° N, 150.01° 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 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 27 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

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

10 later earthquakes within 30 km; the largest was M2.4 5 days ago. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M2.6

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
45.841.828
46.662.458
69.821.526
72.752.027
82.022.032
90.402.241
123.482.331
124.652.262
127.682.314
161.662.026
  1. 2.444 km W of Meadow Lakes, Alaska, United States09-23 08:23
  2. 2.316 km W of Knik-Fairview, Alaska, United States09-26 13:12
  3. 2.318 km W of Meadow Lakes, Alaska, United States09-26 17:24
  4. 2.215 km W of Knik-Fairview, Alaska, United States09-25 04:08
  5. 2.211 km WNW of Meadow Lakes, Alaska, United States09-26 14:22
  6. 2.028 km NNW of Anchorage, Alaska, United States09-24 10:28
  7. 2.022 km NNW of Anchorage, Alaska, United States09-24 19:45
  8. 2.030 km WNW of Meadow Lakes, Alaska, United States09-28 03:23
  9. 1.837 km W of Knik-Fairview, Alaska, United States09-23 07:34
  10. 1.511 km NNW of Anchorage, Alaska, United States09-24 07:33

Did you feel it?

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Reports on SeismoAtlas

No reports yet.

USGS “Did You Feel It?” has 1 reports: add yours at USGS.

Event id aka2026ssnfqn. First recorded here 28 Sept 2026, 17:32:10 UTC. Solutions: USGS · AK (usgs:aka2026ssnfqn). Cite as: SeismoAtlas, “M2.6 earthquake 22 km W of Knik-Fairview, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026ssnfqn-m2-6-earthquake-22-km-w-of-knik-fairview-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026ssnfqn. SeismoAtlas is not an official warning service.