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United States · Alaska

M1.8 Earthquake near Unorganized Borough, Alaska (United States)

UTC time: 2026-09-25 23:03:30 UTC Local time: —

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About this earthquake

On September 25, 2026 at 23:03 UTC, a magnitude M1.8 earthquake occurred near Unorganized Borough, Alaska (United States). The hypocenter lay relatively close to the surface at around 25 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: over the past 24 hours, QuakeMap24 logged 157 earthquakes, the strongest at M3.2.

Depth profile

Depth profile Depth: 25 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 25 km
Shallow
25 km
25 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

  • Wrangell
    Distance: 144 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Churchill
    Distance: 246 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
  • Spurr
    Distance: 314 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Buzzard Creek
    Distance: 320 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 323 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 357 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States

Radius · 50 km

Nearby infrastructure

Up to 3 nearest sites per category

Airports

  • Valdez Pioneer FieldUnited States · VDZ · PAVD
    23.9 kmStraight-line distance

Source: OurAirports · Dataset date: 2026-09-25

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

25 Sep 2025 – 25 Sep 2026 · M ≥ 2.0 · 4,131 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

Open history map
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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