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United States · Alaska

M4.0 Earthquake near North Slope Borough, Alaska (United States)

UTC time: 2026-09-05 23:15:16 UTC Local time: —

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About this earthquake

On September 5, 2026 at 23:15 UTC, a magnitude M4.0 earthquake occurred near North Slope Borough, Alaska (United States). With a focal depth of about 15 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: 154 earthquakes were recorded in the past 24 hours, the strongest reaching M4.0.

Depth profile

Depth profile Depth: 15.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 15.3 km
Shallow
15.3 km
15.3 km — close to the regional average (15.3 km)
Regional average: 15.3 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

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