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M1.8 Depth: 55.8 km

M1.8 Earthquake near 27 km SSW of Susitna, Alaska (United States)

UTC time: 2025-11-21 15:22:58 UTC Local time: —

About this earthquake

On November 21, 2025 at 15:22 UTC, a magnitude M1.8 earthquake occurred near 27 km SSW of Susitna, Alaska (United States). The hypocenter lay relatively close to the surface at around 56 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: 202 earthquakes were recorded in the past 24 hours, the strongest reaching M3.8.

Details

Magnitude
M1.8
Depth
55.8 km
UTC time
2025-11-21 15:22:58 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
61.33310, -150.76552
Temperature
-2.3°C

Map

Depth profile

Depth profile Depth: 55.8 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 55.8 km
Shallow
55.8 km
55.8 km — deeper 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

  • Spurr
    Distance: 79 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Hayes
    Distance: 94 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Redoubt
    Distance: 143 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 192 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·United States
  • Augustine
    Distance: 264 km ·Lava dome(s) ·Elevation: 1'218 m ·Last eruption: 2006 ·United States
  • Douglas
    Distance: 316 km ·Stratovolcano ·Elevation: 2'140 m ·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.

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