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M0.5 Depth: 8.4 km

M0.5 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-07-31 18:07:50 UTC Local time: —

About this earthquake

On July 31, 2026 at 18:07 UTC, a magnitude M0.5 earthquake occurred near Unorganized Borough, Alaska (United States). With a focal depth of about 8 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 155 earthquakes were recorded in the past 24 hours, the strongest reaching M3.5.

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Depth profile

Depth profile Depth: 8.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 8.4 km
Shallow
8.4 km
8.4 km — shallower than the regional average (15.5 km)
Regional average: 15.5 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

  • Atka Volcanic Complex
    Distance: 8 km ·Stratovolcano(es) ·Elevation: 1'518 m ·Last eruption: 2025 ·United States
  • Koniuji
    Distance: 73 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States
  • Kasatochi
    Distance: 99 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Seguam
    Distance: 108 km ·Stratovolcano(es) ·Elevation: 1'054 m ·Last eruption: 1993 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 143 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·United States
  • Moffett
    Distance: 188 km ·Stratovolcano ·Elevation: 1'196 m ·Last eruption: -1600 ·United States

Historic earthquake map · United States

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Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

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

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