3.3

M3.3 Earthquake 34 km WNW of Skwentna, AlaskaJanuary 4, 2026

2026-01-04 17:05:18 UTC (2026-01-04) · approx. 7:05 AM UTC-10 local

MagnitudeM3.3(ml)
Time17:05 UTC7:05 AM UTC-10
Depth109.5 kmintermediate depth
Coordinates62.139°, -151.976°
Felt byNo felt reports
StatusAutomatic (preliminary)

On January 4, 2026 at 17:05 UTC, a magnitude 3.3 intermediate depth earthquake struck 34 km WNW of Skwentna, Alaska, at a depth of 109.5 km and coordinates 62.1390°, -151.9760°.

Physical scale: An earthquake of magnitude 3.3 releases seismic energy equivalent to roughly 1.3 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 114 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 62.14°, -151.98°

Earthquake Details

Magnitude
3.3 ml
Depth
109.5 km
intermediate depth
Location
62.1390°N
-151.9760°E

Technical Information

Event ID
ak2026agvdvt
Event Type
earthquake
Status
Automatic
Significance
168
Stations Used
140
Azimuthal Gap
26.0°
Min Station Distance
0.300°
RMS Residual
0.70 sec
Last Updated
2026-04-07 22:11:54 UTC

Common Questions

How strong was the magnitude 3.3 earthquake near Skwentna, Alaska?

The magnitude 3.3 earthquake that struck 34 km WNW of Skwentna, Alaska on January 4, 2026 at 17:05 UTC had a depth of 109.5 km. For context, this was a minor earthquake typically detected only by instruments.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.3 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: ak2026agvdvt). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, January 4, 2026). M3.3 Earthquake 34 km WNW of Skwentna, AlaskaJanuary 4, 2026. Retrieved May 12, 2026 from https://www.earthquaketracker.org/earthquakes/event/ak2026agvdvt/