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United States · Alaska

M1.7 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-09-28 14:16:29 UTC Local time: —
Magnitude
M1.7
Depth
51.5 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

On September 28, 2026 at 14:16 UTC, a magnitude M1.7 earthquake occurred near Matanuska-Susitna Borough, Alaska (United States). With a focal depth of about 52 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size typically go unnoticed.

The event was recorded by USGS. United States: over the past 24 hours, QuakeMap24 logged 160 earthquakes, the strongest at M4.1.

Depth profile

Depth profile Depth: 51.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 51.5 km
Shallow
51.5 km
51.5 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

  • Buzzard Creek
    Distance: 128 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Wrangell
    Distance: 236 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Hayes
    Distance: 261 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 278 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Redoubt
    Distance: 362 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Churchill
    Distance: 374 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States

Alaska

Context for this earthquake

28 Sep 2025 – 28 Sep 2026 · M ≥ 2.0 · 4,155 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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