3.6

M3.6 Earthquake 42 km WSW of Anchor Point, Alaska — September 28, 2026

2026-09-28 16:44:00 UTC (12 min ago) · approx. 6:44 AM UTC-10 local

MagnitudeM3.6(ml)
Time16:44 UTC≈ 6:44 AM UTC-10
Depth87.0 kmintermediate depth
Coordinates59.675°, -152.558°
Felt byNo felt reports
StatusAutomatic (preliminary)

On September 28, 2026 at 16:44 UTC, a magnitude 3.6 intermediate depth earthquake struck 42 km WSW of Anchor Point, Alaska, at a depth of 87.0 km and coordinates 59.6750°, -152.5580°.

Physical scale: An earthquake of magnitude 3.6 releases seismic energy equivalent to roughly 3.8 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 184 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 59.67°, -152.56°

ShakeMap — predicted shaking intensity

Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.

USGS ShakeMap intensity contours for the M3.6 earthquake near 42 km WSW of Anchor Point, Alaska

Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS

Earthquake Details

Magnitude
3.6 ml
Depth
87.0 km
intermediate depth
Location
59.6750°N
-152.5580°E
Intensity (MMI)
1.9
weak

Technical Information

Event ID
aka2026tfzjzc
Event Type
earthquake
Status
Automatic
Significance
199
Stations Used
222
Azimuthal Gap
75.0°
Min Station Distance
0.300°
RMS Residual
0.90 sec
Last Updated
2026-09-28 16:48:34 UTC

Common Questions

How strong was the magnitude 3.6 earthquake near Anchor Point, Alaska?

The magnitude 3.6 earthquake that struck 42 km WSW of Anchor Point, Alaska on September 28, 2026 at 16:44 UTC had a depth of 87.0 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 3.6 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 3.6 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: aka2026tfzjzc). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, September 28, 2026). M3.6 Earthquake 42 km WSW of Anchor Point, Alaska — September 28, 2026. Retrieved September 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026tfzjzc/