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M3.1 Depth: 10.0 km

M3.1 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-02-23 13:32:08 UTC Local time: —

About this earthquake

A magnitude M3.1 earthquake was recorded near Unorganized Borough, Alaska (United States) on February 23, 2026 at 13:32 UTC. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude are often felt but rarely cause damage.

The event was recorded by EMSC. United States: over the past 24 hours, QuakeMap24 logged 188 earthquakes, the strongest at M5.8.

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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 (15.8 km)
Regional average: 15.8 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

  • Buzzard Creek
    Distance: 253 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 328 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 367 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • St. Michael
    Distance: 434 km ·Volcanic field ·Elevation: 715 m ·United States
  • Redoubt
    Distance: 453 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Imuruk Lake
    Distance: 476 km ·Volcanic field ·Elevation: 610 m ·Last eruption: 300 ·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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