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United States · Alaska

M4.7 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-04-28 03:33:29 UTC Local time: —
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.

Magnitude
M4.7
Depth
89.0 km
Source
GFZ

Alaska · Matanuska-Susitna Borough

Country overview

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About this earthquake

A magnitude M4.7 earthquake was recorded near Matanuska-Susitna Borough, Alaska (United States) on April 28, 2026 at 03:33 UTC. At around 89 km, the focal depth places this among intermediate-depth events. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The event was recorded by GFZ. United States: over the past 24 hours, QuakeMap24 logged 174 earthquakes, the strongest at M3.9.

Depth profile

Depth profile Depth: 89 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 89 km
Intermediate
89 km
89 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

  • Buzzard Creek
    Distance: 129 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 207 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 235 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Redoubt
    Distance: 328 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Wrangell
    Distance: 330 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Iliamna
    Distance: 381 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States

Alaska

Context for this earthquake

14 Sep 2025 – 14 Sep 2026 · M ≥ 3.0 · 657 Catalogue entries

Of 656 other entries for this area and period, 77 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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