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M1.7 earthquake 144 km NNW of Meadow Lakes, Alaska, United States

A magnitude 1.7 earthquake struck 144 km NNW of Meadow Lakes, Alaska, United States at 18:54 local time (02:54 UTC) on 18 Oct 2026, at a depth of 85 km, according to USGS.

Data: USGS · updated 2026-10-21 22:21 UTC · reviewed

Magnitude
1.7micro
local magnitude (Richter) (ml)
Depth
84.5 km
Status
Reviewed
Origin time
2026-10-19 02:54:36 UTC
Local: 18 Oct 2026, 18:54:36 (America/Anchorage)
Epicentre
62.745° N, 150.972° 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
Meadow LakesAlaska, United States · pop. 7,570144 kmINot felt
TanainaAlaska, United States · pop. 8,197148 kmINot felt
AnchorageAlaska, United States · pop. 289,600179 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 Survey1.7 ml84.5 km62.74° N, 150.97° W–Reviewed · 1 revision

How big was it?

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

It released roughly the energy of 5 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 85 km this was a intermediate-depth earthquake, which spreads shaking over a wider area but less intensely.

M1.7 releases about 11× the energy of M1.0, and its waves are about 5× taller on a seismogram. Energy: 5 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

23 later earthquakes within 30 km; the largest was M3.5 3 days ago. 8 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.

Aftershocks

Mainshock M1.7

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

Aftershocks
Time after mainshock (hours)MagnitudeDepth (km)
6.811.5107
18.911.990
20.133.1106
45.901.686
66.701.995
104.951.892
122.932.4106
207.322.099
243.972.396
281.342.7128
340.422.387
344.222.086
359.042.1124
393.992.082
405.942.099
414.581.991
421.292.192
465.841.593
488.232.692
507.232.2104
509.573.5112
566.602.386
593.832.390
  1. 3.5Petersville, Alaska11-09 08:28
  2. 3.1Petersville, Alaska10-19 23:02
  3. 2.7Petersville, Alaska10-30 20:14
  4. 2.6Petersville, Alaska11-08 11:08
  5. 2.4Petersville, Alaska10-24 05:50
  6. 2.3Petersville, Alaska10-29 06:52
  7. 2.3145 km NNW of Meadow Lakes, Alaska, United States11-02 07:19
  8. 2.3140 km NW of Meadow Lakes, Alaska, United States11-11 17:30
  9. 2.3141 km NW of Meadow Lakes, Alaska, United States11-12 20:44
  10. 2.2Petersville, Alaska11-09 06:08
  11. 2.1Petersville, Alaska11-03 01:56
  12. 2.1Petersville, Alaska11-05 16:12
  13. 2.0142 km NW of Meadow Lakes, Alaska, United States10-27 18:13
  14. 2.0Petersville, Alaska11-02 11:07
  15. 2.0127 km NW of Meadow Lakes, Alaska, United States11-04 12:53
  16. 2.0Petersville, Alaska11-05 00:50
  17. 1.9143 km NNW of Meadow Lakes, Alaska, United States10-19 21:48
  18. 1.9144 km NW of Meadow Lakes, Alaska, United States10-21 21:36
  19. 1.9130 km NW of Meadow Lakes, Alaska, United States11-05 09:29
  20. 1.8149 km NNW of Meadow Lakes, Alaska, United States10-23 11:51
  21. 1.6131 km NW of Meadow Lakes, Alaska, United States10-21 00:48
  22. 1.5Petersville, Alaska10-19 09:43
  23. 1.5136 km NW of Meadow Lakes, Alaska, United States11-07 12:45

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 aka2026ursexj. First recorded here 19 Oct 2026, 02:58:18 UTC. Solutions: USGS · AK (usgs:aka2026ursexj). Cite as: SeismoAtlas, “M1.7 earthquake 144 km NNW of Meadow Lakes, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026ursexj-m1-7-earthquake-144-km-nnw-of-meadow-lakes-alaska-united-states, data from USGS.

JSON: /api/v1/events/aka2026ursexj. SeismoAtlas is not an official warning service.