Back to map
M1.8 Depth: 66.3 km

M1.8 Earthquake near 17 km W of Susitna, Alaska (United States)

UTC time: 2025-10-22 03:43:50 UTC Local time: —

About this earthquake

On October 22, 2025 at 03:43 UTC, a magnitude M1.8 earthquake occurred near 17 km W of Susitna, Alaska (United States). The hypocenter lay relatively close to the surface at around 66 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: 196 earthquakes were recorded in the past 24 hours, the strongest reaching M4.7.

Details

Magnitude
M1.8
Depth
66.3 km
UTC time
2025-10-22 03:43:50 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.52550, -150.83560
Temperature
1.6°C

Map

Depth profile

Depth profile Depth: 66.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 66.3 km
Shallow
66.3 km
66.3 km — deeper than the regional average (15.4 km)
Regional average: 15.4 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: 79 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 84 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 155 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 206 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 280 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Buzzard Creek
    Distance: 307 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States

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.

Share