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M1.8 earthquake 47 km W of Anchorage, Alaska, United States

A magnitude 1.8 earthquake struck 47 km W of Anchorage, Alaska, United States at 15:24 local time (00:24 UTC) on 4 Nov 2026, at a depth of 68 km, according to USGS.

Data: USGS · updated 2026-11-05 16:02 UTC · reviewed

Magnitude
1.8micro
local magnitude (Richter) (ml)
Depth
68.2 km
Status
Reviewed
Origin time
2026-11-05 00:24:19 UTC
Local: 4 Nov 2026, 15:24:19 (America/Anchorage)
Epicentre
61.179° N, 150.764° 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
AnchorageAlaska, United States · pop. 289,60047 kmINot felt
Eagle RiverAlaska, United States · pop. 24,79366 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 Survey1.8 ml68.2 km61.18° N, 150.76° W–Reviewed

How big was it?

Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.

It released roughly the energy of 8 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 68 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.

M1.8 releases about 16× the energy of M1.0, and its waves are about 6.3× taller on a seismogram. Energy: 8 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

13 later earthquakes within 30 km; the largest was M3.0 4 days ago. 6 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.8

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
13.511.623
19.041.647
21.102.014
43.971.853
44.612.01
54.882.063
55.652.971
77.152.051
77.453.071
95.852.957
98.532.370
121.262.269
138.322.11
  1. 3.048 km WNW of Anchorage, Alaska, United States11-08 05:51
  2. 2.960 km N of Kenai, Alaska, United States11-07 08:03
  3. 2.945 km WNW of Anchorage, Alaska, United States11-09 00:15
  4. 2.359 km WNW of Anchorage, Alaska, United States11-09 02:55
  5. 2.253 km N of Kenai, Alaska, United States11-10 01:40
  6. 2.152 km NNE of Kenai, Alaska, United States11-10 18:43
  7. 2.053 km WNW of Anchorage, Alaska, United States11-05 21:30
  8. 2.047 km WSW of Anchorage, Alaska, United States11-06 21:01
  9. 2.041 km W of Anchorage, Alaska, United States11-07 07:17
  10. 2.042 km W of Anchorage, Alaska, United States11-08 05:33
  11. 1.845 km WSW of Anchorage, Alaska, United States11-06 20:22
  12. 1.638 km WNW of Anchorage, Alaska, United States11-05 13:55
  13. 1.635 km W of Anchorage, Alaska, United States11-05 19:26

Did you feel it?

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Reports on SeismoAtlas

No reports yet.

Event id aka2026vwxodp. First recorded here 5 Nov 2026, 16:06:37 UTC. Solutions: USGS · AK (usgs:aka2026vwxodp). Cite as: SeismoAtlas, “M1.8 earthquake 47 km W of Anchorage, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026vwxodp-m1-8-earthquake-47-km-w-of-anchorage-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026vwxodp. SeismoAtlas is not an official warning service.