M1.9 earthquake 123 km N of Tanaina, Alaska, United States
A magnitude 1.9 earthquake struck 123 km N of Tanaina, Alaska, United States at 08:52 local time (16:52 UTC) on 26 Oct 2026, at a depth of 64 km, according to USGS.
revised from M1.7
Data: USGS · updated 2026-10-29 20:51 UTC · reviewed
- Magnitude
- 1.9micro
local magnitude (Richter) (ml)
revised from 1.7 - Depth
- 64.4 km
- Status
- Reviewed
- Origin time
- 2026-10-26 16:52:22 UTC
- Local: 26 Oct 2026, 08:52:22 (America/Anchorage)
- Epicentre
- 62.736° N, 149.571° 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 |
|---|---|---|
| TanainaAlaska, United States · pop. 8,197 | 123 km | INot felt |
| Meadow LakesAlaska, United States · pop. 7,570 | 124 km | INot felt |
| AnchorageAlaska, United States · pop. 289,600 | 169 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.
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 | 1.9 mlwas 1.7 | 64.4 km | 62.74° N, 149.57° W | – | Reviewed · 2 revisions |
How big was it?
Usually not felt. Recorded by nearby seismometers; thousands occur worldwide every day.
It released roughly the energy of 11 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 64 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.
M1.9 releases about 22× the energy of M1.0, and its waves are about 7.9× taller on a seismogram. Energy: 11 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
15 later earthquakes within 30 km; the largest was M2.3 8 days ago. 3 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M1.9
15 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 45.56 | 2.1 | 66 |
| 86.76 | 1.7 | 72 |
| 91.31 | 1.8 | 14 |
| 94.48 | 1.8 | 70 |
| 113.89 | 1.9 | 61 |
| 123.59 | 2.1 | 72 |
| 126.27 | 1.9 | 15 |
| 194.84 | 2.1 | 76 |
| 199.50 | 2.3 | 61 |
| 205.55 | 2.3 | 81 |
| 225.55 | 2.2 | 76 |
| 229.98 | 2.1 | 75 |
| 239.61 | 2.0 | 5 |
| 272.41 | 1.6 | 73 |
| 371.62 | 2.2 | 57 |
- 2.3114 km N of Tanaina, Alaska, United States11-04 00:22
- 2.3150 km N of Tanaina, Alaska, United States11-04 06:25
- 2.2140 km N of Tanaina, Alaska, United States11-05 02:25
- 2.2105 km N of Tanaina, Alaska, United States11-11 04:29
- 2.1122 km N of Tanaina, Alaska, United States10-28 14:25
- 2.1139 km N of Tanaina, Alaska, United States10-31 20:27
- 2.1148 km N of Tanaina, Alaska, United States11-03 19:42
- 2.1132 km N of Tanaina, Alaska, United States11-05 06:51
- 2.0131 km N of Meadow Lakes, Alaska, United States11-05 16:28
- 1.999 km N of Tanaina, Alaska, United States10-31 10:45
- 1.9120 km N of Tanaina, Alaska, United States10-31 23:08
- 1.8114 km N of Tanaina, Alaska, United States10-30 12:10
- 1.8148 km N of Tanaina, Alaska, United States10-30 15:21
- 1.7137 km N of Meadow Lakes, Alaska, United States10-30 07:38
- 1.6150 km N of Tanaina, Alaska, United States11-07 01:17
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 aka2026vfshdr. First recorded here 26 Oct 2026, 16:55:05 UTC. Solutions: USGS · AK (usgs:aka2026vfshdr). Cite as: SeismoAtlas, “M1.9 earthquake 123 km N of Tanaina, Alaska, United States”, https://seismoatlas.com/earthquake/aka2026vfshdr-m1-9-earthquake-123-km-n-of-tanaina-alaska-united-states, data from USGS.
JSON: /api/v1/events/aka2026vfshdr. SeismoAtlas is not an official warning service.