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United States · Alaska

M3.1 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-09-16 07:34:40 UTC Local time: —
Magnitude
M3.1
Depth
75.3 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

A magnitude M3.1 earthquake was recorded near Matanuska-Susitna Borough, Alaska (United States) on September 16, 2026 at 07:34 UTC. The earthquake originated at an intermediate depth of about 75 km. Earthquakes of this magnitude are often felt but rarely cause damage.

The data is provided by USGS and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 174 earthquakes, the strongest at M4.8.

Depth profile

Depth profile Depth: 75.3 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 75.3 km
Intermediate
75.3 km
75.3 km — deeper than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Hayes
    Distance: 133 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 159 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Buzzard Creek
    Distance: 205 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Redoubt
    Distance: 252 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 305 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Wrangell
    Distance: 351 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States

Alaska

Context for this earthquake

16 Sep 2025 – 16 Sep 2026 · M ≥ 3.0 · 656 Catalogue entries

Of 655 other entries for this area and period, 469 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historic earthquake map · United States

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