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United States · Alaska

M2.5 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-08-20 02:58:56 UTC Local time: —
Magnitude
M2.5
Depth
120.3 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

On August 20, 2026 at 02:58 UTC, a magnitude M2.5 earthquake occurred near Matanuska-Susitna Borough, Alaska (United States). The earthquake originated at an intermediate depth of about 120 km. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 184 earthquakes, the strongest at M4.1.

Depth profile

Depth profile Depth: 120.3 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 120.3 km
Intermediate
120.3 km
120.3 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: 165 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Buzzard Creek
    Distance: 177 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Spurr
    Distance: 198 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Redoubt
    Distance: 292 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 346 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Wrangell
    Distance: 377 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States

Alaska

Context for this earthquake

05 Oct 2025 – 05 Oct 2026 · M ≥ 2.0 · 4,148 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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Country statistics · United States

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

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