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United States · Alaska

M2.7 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-09-16 17:41:33 UTC Local time: —
Magnitude
M2.7
Depth
20.7 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

On September 16, 2026 at 17:41 UTC, a magnitude M2.7 earthquake occurred near Matanuska-Susitna Borough, Alaska (United States). With a focal depth of about 21 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: 185 earthquakes were recorded in the past 24 hours, the strongest reaching M5.2.

Depth profile

Depth profile Depth: 20.7 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 20.7 km
Shallow
20.7 km
20.7 km — deeper than the regional average (15.2 km)
Regional average: 15.2 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

  • Wrangell
    Distance: 192 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Spurr
    Distance: 256 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 263 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Buzzard Creek
    Distance: 295 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Churchill
    Distance: 304 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
  • Redoubt
    Distance: 304 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States

Alaska

Context for this earthquake

16 Sep 2025 – 16 Sep 2026 · M ≥ 2.0 · 4,101 Catalogue entries

Of 4,100 other entries for this area and period, 921 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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Country statistics · United States

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