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M2.1 Depth: 0.1 km

M2.1 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-09-04 21:15:42 UTC Local time: —

About this earthquake

A magnitude M2.1 earthquake was recorded near Matanuska-Susitna Borough, Alaska (United States) on September 4, 2026 at 21:15 UTC. The hypocenter lay relatively close to the surface at around 0 km, increasing how strongly it was felt. Earthquakes of this small magnitude are usually barely noticeable and cause no damage.

The data is provided by USGS and cross-checked across seismological networks. United States: 165 earthquakes were recorded in the past 24 hours, the strongest reaching M3.5.

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Depth profile

Depth profile Depth: 0.1 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 0.1 km
Shallow
0.1 km
0.1 km — shallower than the regional average (15.3 km)
Regional average: 15.3 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: 105 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Wrangell
    Distance: 230 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Hayes
    Distance: 295 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 313 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Churchill
    Distance: 368 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
  • Redoubt
    Distance: 398 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States

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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