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M4.0 Depth: 10.0 km

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

UTC time: 2026-06-16 23:57:44 UTC Local time: —

About this earthquake

On June 16, 2026 at 23:57 UTC, a magnitude M4.0 earthquake occurred near Unorganized Borough, Alaska (United States). The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The data is provided by ISC and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 179 earthquakes, the strongest at M4.1.

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Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 km
10 km — shallower than the regional average (15.9 km)
Regional average: 15.9 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

  • Imuruk Lake
    Distance: 39 km ·Volcanic field ·Elevation: 610 m ·Last eruption: 300 ·United States
  • St. Michael
    Distance: 200 km ·Volcanic field ·Elevation: 715 m ·United States
  • Ingakslugwat Hills
    Distance: 423 km ·Volcanic field ·Elevation: 190 m ·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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