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United States · Alaska

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

UTC time: 2026-09-20 00:35:59 UTC Local time: —
Magnitude
M1.8
Depth
37.4 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

On September 20, 2026 at 00:35 UTC, a magnitude M1.8 earthquake occurred near Matanuska-Susitna Borough, Alaska (United States). The hypocenter lay relatively close to the surface at around 37 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: 201 earthquakes were recorded in the past 24 hours, the strongest reaching M3.1.

Depth profile

Depth profile Depth: 37.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 37.4 km
Shallow
37.4 km
37.4 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: 210 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 212 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Wrangell
    Distance: 233 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Buzzard Creek
    Distance: 237 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Redoubt
    Distance: 280 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 327 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Wasilla Creek AirparkUnited States · 05AK
    47.9 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-19

This selection shows geographic proximity, not a hazard zone or confirmed impacts. Distances use recorded site coordinates. Sources & data dates

Alaska

Context for this earthquake

20 Sep 2025 – 19 Sep 2026 · M ≥ 2.0 · 4,107 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

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

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