M2.1 earthquake – Denali National Park, Alaska
A magnitude 2.1 earthquake struck in the Denali National Park, Alaska region at 02:26 local time (10:26 UTC) on 31 Oct 2026, at a depth of 2 km, according to USGS.
revised from M1.9
Data: USGS · updated 2026-11-01 00:18 UTC · reviewed
- Magnitude
- 2.1micro
local magnitude (Richter) (ml)
revised from 1.9 - Depth
- 2 km
- Status
- Reviewed
- Origin time
- 2026-10-31 10:26:23 UTC
- Local: 31 Oct 2026, 02:26:23 (America/Anchorage)
- Epicentre
- 63.191° N, 151.291° 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
| Place | Distance | Est. shaking |
|---|---|---|
| AnchorageAlaska, United States · pop. 289,600 | 231 km | INot 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. Likely felt out to about 6 km.
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.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGS · AKheadlineAlaska Earthquake Center via U.S. Geological Survey | 2.1 mlwas 1.9 | 2 km | 63.19° N, 151.29° 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 21 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 2 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.
M2.1 releases about 32× the energy of M1.1, and its waves are about 10× taller on a seismogram. Energy: 21 kg of TNT vs 674 g of TNT.
Each square is the energy of one M1.1. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
19 later earthquakes within 30 km; the largest was M2.6 5 days ago. 11 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M2.1
19 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 19.94 | 1.5 | 1 |
| 20.12 | 1.8 | 6 |
| 33.34 | 1.9 | 3 |
| 63.51 | 2.1 | 124 |
| 119.36 | 1.9 | 121 |
| 164.69 | 2.6 | 134 |
| 181.76 | 1.8 | 2 |
| 189.43 | 2.1 | 120 |
| 189.76 | 2.1 | 122 |
| 211.95 | 1.4 | 5 |
| 231.60 | 2.4 | 24 |
| 243.61 | 2.6 | 1 |
| 254.54 | 2.4 | 19 |
| 256.45 | 2.2 | 17 |
| 270.01 | 2.5 | 17 |
| 277.17 | 2.2 | 18 |
| 280.27 | 2.1 | 19 |
| 289.54 | 2.1 | 15 |
| 290.57 | 2.0 | 14 |
- 2.6Denali National Park, Alaska11-07 07:07
- 2.6Denali National Park, Alaska11-10 14:03
- 2.5Denali National Park, Alaska11-11 16:27
- 2.4Denali National Park, Alaska11-10 02:02
- 2.4Denali National Park, Alaska11-11 00:58
- 2.2Denali National Park, Alaska11-11 02:53
- 2.2Denali National Park, Alaska11-11 23:36
- 2.1Petersville, Alaska11-03 01:56
- 2.1Denali National Park, Alaska11-08 07:52
- 2.1Denali National Park, Alaska11-08 08:11
- 2.1Denali National Park, Alaska11-12 02:42
- 2.1Denali National Park, Alaska11-12 11:58
- 2.0Denali National Park, Alaska11-12 13:00
- 1.9Denali National Park, Alaska11-01 19:46
- 1.9Denali National Park, Alaska11-05 09:48
- 1.8Denali National Park, Alaska11-01 06:33
- 1.8Denali National Park, Alaska11-08 00:12
- 1.5Denali National Park, Alaska11-01 06:22
- 1.4Denali National Park, Alaska11-09 06:23
Did you feel it?
Reports from people help show where shaking was strong. They are anonymous and shown here in aggregate.
Reports on SeismoAtlas
No reports yet.
Event id aka2026volnih. First recorded here 31 Oct 2026, 10:28:54 UTC. Solutions: USGS · AK (usgs:aka2026volnih). Cite as: SeismoAtlas, “M2.1 earthquake – Denali National Park, Alaska”, https://seismoatlas.com/earthquake/aka2026volnih-m2-1-earthquake-denali-national-park-alaska, data from USGS.
JSON: /api/v1/events/aka2026volnih. SeismoAtlas is not an official warning service.