3.3

M3.3 Earthquake 10 km ESE of Nikiski, Alaska — November 13, 2026

2026-11-13 09:47:19 UTC (56 min ago) · approx. 11:47 PM UTC-10 local

MagnitudeM3.3(ml)
Time09:47 UTC≈ 11:47 PM UTC-10
Depth61.3 kmshallow crustal
Coordinates60.651°, -151.123°
Felt byNo felt reports
StatusAutomatic (preliminary)

On November 13, 2026 at 09:47 UTC, a magnitude 3.3 shallow crustal earthquake struck 10 km ESE of Nikiski, Alaska, at a depth of 61.3 km and coordinates 60.6510°, -151.1230°.

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 60.65°, -151.12°

Earthquake Details

Magnitude
3.3 ml
Depth
61.3 km
shallow crustal
Location
60.6510°N
-151.1230°E

Technical Information

Event ID
aka2026wmkmus
Event Type
earthquake
Status
Automatic
Significance
168
Stations Used
167
Azimuthal Gap
45.0°
Min Station Distance
0.100°
RMS Residual
1.10 sec
Last Updated
2026-11-13 09:51:35 UTC

Common Questions

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

The magnitude 3.3 earthquake that struck 10 km ESE of Nikiski, Alaska on November 13, 2026 at 09:47 UTC had a depth of 61.3 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.

Understanding This Data

Magnitude 3.3 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: aka2026wmkmus). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, November 13, 2026). M3.3 Earthquake 10 km ESE of Nikiski, Alaska — November 13, 2026. Retrieved November 13, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026wmkmus/