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M1.8 Depth: 1.5 km

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

UTC time: 2026-08-04 22:20:19 UTC Local time: —

About this earthquake

A magnitude M1.8 earthquake was recorded near Unorganized Borough, Alaska (United States) on August 4, 2026 at 22:20 UTC. The hypocenter lay relatively close to the surface at around 2 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: 170 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Map

Depth profile

Depth profile Depth: 1.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 1.5 km
Shallow
1.5 km
1.5 km — shallower than the regional average (15.5 km)
Regional average: 15.5 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: 135 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Buzzard Creek
    Distance: 227 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Churchill
    Distance: 241 km ·Stratovolcano ·Elevation: 5'005 m ·Last eruption: 847 ·United States
  • Fort Selkirk
    Distance: 347 km ·Volcanic field ·Elevation: 1'239 m ·Canada
  • Hayes
    Distance: 455 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 465 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·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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