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M1.8 Depth: 48.8 km

M1.8 Earthquake near Kodiak Island Borough, Alaska (United States)

UTC time: 2026-08-21 10:22:11 UTC Local time: —

About this earthquake

A magnitude M1.8 earthquake was recorded near Kodiak Island Borough, Alaska (United States) on August 21, 2026 at 10:22 UTC. The hypocenter lay relatively close to the surface at around 49 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 198 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Map

Depth profile

Depth profile Depth: 48.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 48.8 km
Shallow
48.8 km
48.8 km — deeper than the regional average (15.4 km)
Regional average: 15.4 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

Volcanoes nearby

  • Alaska Peninsula Arc at 155.4°W
    Distance: 63 km ·Lava dome ·Elevation: 402 m ·United States
  • Mageik
    Distance: 86 km ·Stratovolcano ·Elevation: 2'165 m ·Last eruption: -500 ·United States
  • Trident
    Distance: 86 km ·Stratovolcano ·Elevation: 1'864 m ·Last eruption: 1974 ·United States
  • Martin
    Distance: 87 km ·Stratovolcano ·Elevation: 1'863 m ·Last eruption: 1953 ·United States
  • Katmai
    Distance: 89 km ·Stratovolcano ·Elevation: 2'047 m ·Last eruption: 1912 ·United States
  • Novarupta
    Distance: 91 km ·Caldera ·Elevation: 841 m ·Last eruption: 1912 ·United States

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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