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United States · Alaska

M2.6 Earthquake near Matanuska-Susitna Borough, Alaska (United States)

UTC time: 2026-09-21 09:43:47 UTC Local time: —
Magnitude
M2.6
Depth
27.4 km
Source
USGS

Alaska · Matanuska-Susitna Borough

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About this earthquake

On September 21, 2026 at 09:43 UTC, a magnitude M2.6 earthquake occurred near Matanuska-Susitna Borough, Alaska (United States). With a focal depth of about 27 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. 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: 178 earthquakes were recorded in the past 24 hours, the strongest reaching M3.3.

Depth profile

Depth profile Depth: 27.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 27.4 km
Shallow
27.4 km
27.4 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

  • Spurr
    Distance: 122 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 128 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 187 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 236 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Buzzard Creek
    Distance: 293 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Augustine
    Distance: 305 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Merrill FieldUnited States · MRI · PAMR
    36.1 kmStraight-line distance
  • Ted Stevens Anchorage International AirportUnited States · ANC · PANC
    38.7 kmStraight-line distance
  • Wasilla Creek AirparkUnited States · 05AK
    46.3 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-21

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

21 Sep 2025 – 21 Sep 2026 · M ≥ 2.0 · 4,118 Catalogue entries

Of 4,117 other entries for this area and period, 1,082 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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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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