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United States · Alaska

M2.2 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-09-09 10:54:00 UTC Local time: —
Magnitude
M2.2
Depth
17.5 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

On September 9, 2026 at 10:54 UTC, a magnitude M2.2 earthquake occurred near Matanuska-Susitna Borough, Alaska (United States). With a focal depth of about 18 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 236 earthquakes were recorded in the past 24 hours, the strongest reaching M5.4.

Depth profile

Depth profile Depth: 17.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 17.5 km
Shallow
17.5 km
17.5 km — close to 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

  • Buzzard Creek
    Distance: 197 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 203 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 213 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Wrangell
    Distance: 250 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Redoubt
    Distance: 291 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 342 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States

Alaska

Context for this earthquake

12 Sep 2025 – 12 Sep 2026 · M ≥ 2.0 · 4,106 Catalogue entries

Of 4,105 other entries for this area and period, 2,349 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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View earthquake KPIs, strongest and latest events, and averages for this country.

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