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United States · Alaska

M4.6 Earthquake near Kodiak Island Borough, Alaska (United States)

UTC time: 2026-08-17 20:35:10 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded

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

Magnitude
M4.6
Depth
55.7 km
Source
USGS

Alaska · Kodiak Island Borough

Country overview

Map

About this earthquake

On August 17, 2026 at 20:35 UTC, a magnitude M4.6 earthquake occurred near Kodiak Island Borough, Alaska (United States). With a focal depth of about 56 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 182 earthquakes, the strongest at M4.0.

Depth profile

Depth profile Depth: 55.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 55.7 km
Shallow
55.7 km
55.7 km — deeper 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

Estimated impact

6 Felt reports · max reported intensity 3.1

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 209 km away

Volcanoes nearby

  • Alaska Peninsula Arc at 155.4°W
    Distance: 74 km ·Lava dome ·Elevation: 402 m ·United States
  • Ugashik-Peulik
    Distance: 103 km ·Stratovolcano ·Elevation: 1'474 m ·Last eruption: 1814 ·United States
  • Martin
    Distance: 104 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Mageik
    Distance: 105 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Trident
    Distance: 108 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Novarupta
    Distance: 112 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Karluk AirportUnited States · KYK · PAKY
    41.4 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-22

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Alaska

Context for this earthquake

22 Sep 2025 – 22 Sep 2026 · M ≥ 3.0 · 655 Catalogue entries

Of 654 other entries for this area and period, 87 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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