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United States · Alaska

M1.8 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-10-04 22:18:24 UTC Local time: —
Magnitude
M1.8
Depth
75.5 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

A magnitude M1.8 earthquake was recorded near Matanuska-Susitna Borough, Alaska (United States) on October 4, 2026 at 22:18 UTC. The earthquake originated at an intermediate depth of about 76 km. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The event was recorded by USGS. United States: 181 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Depth profile

Depth profile Depth: 75.5 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 75.5 km
Intermediate
75.5 km
75.5 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: 114 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 233 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 256 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Wrangell
    Distance: 287 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Redoubt
    Distance: 346 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 399 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States

Alaska

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 2.0 · 4,146 Catalogue entries

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

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Historic earthquake map · United States

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Country statistics · United States

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