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United States · Alaska

M4.1 Earthquake near North Slope Borough, Alaska (United States)

UTC time: 2026-09-15 09:51:37 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded Content updated:

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

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About this earthquake

A magnitude M4.1 earthquake was recorded near North Slope Borough, Alaska (United States) on September 15, 2026 at 09:51 UTC. With a focal depth of about 4 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Tremors of this size are distinctly felt and can occasionally cause light damage.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 187 earthquakes, the strongest at M3.0.

Depth profile

Depth profile Depth: 4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 4 km
Shallow
4 km
4 km — shallower than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters

Shallow quakes release energy near the surface — shaking is felt more strongly and damage potential is higher.

Depth classes per USGS

Ground shaking

IV
Light · Intensity (MMI) IV
Felt by many, no damage.

Tectonic context

Located on the North America Plate.
Near the boundary North America ↔ Pacific · about 1012 km away

Alaska

Context for this earthquake

21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 653 Catalogue entries

Of 652 other entries for this area and period, 146 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

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