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M1.6 Depth: 14.4 km

M1.6 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-08-21 05:43:34 UTC Local time: —

About this earthquake

On August 21, 2026 at 05:43 UTC, a magnitude M1.6 earthquake occurred near Unorganized Borough, Alaska (United States). The hypocenter lay relatively close to the surface at around 14 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: 197 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Map

Depth profile

Depth profile Depth: 14.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 14.4 km
Shallow
14.4 km
14.4 km — close to 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

  • Spurr
    Distance: 262 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Wrangell
    Distance: 271 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Redoubt
    Distance: 272 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Hayes
    Distance: 285 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Iliamna
    Distance: 295 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 335 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States

Historic earthquake map · United States

Open history map
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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