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United States · Alaska

M0.5 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-09-22 20:03:43 UTC Local time: —
Magnitude
M0.5
Depth
29.0 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

On September 22, 2026 at 20:03 UTC, a magnitude M0.5 earthquake occurred near Matanuska-Susitna Borough, Alaska (United States). The hypocenter lay relatively close to the surface at around 29 km, increasing how strongly it was felt. Events of this size typically go unnoticed.

The data is provided by USGS and cross-checked across seismological networks. United States: 183 earthquakes were recorded in the past 24 hours, the strongest reaching M4.0.

Depth profile

Depth profile Depth: 29 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 29 km
Shallow
29 km
29 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

  • Hayes
    Distance: 23 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 36 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Redoubt
    Distance: 131 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 184 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 261 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 317 km ·Stratovolcano ·Elevation: 2'140 m ·United States

Alaska

Context for this earthquake

22 Sep 2025 – 22 Sep 2026 · M ≥ 2.0 · 4,124 Catalogue entries

Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.

Open seismic profile

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

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View earthquake KPIs, strongest and latest events, and averages for this country.

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