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M3.3 Depth: 3.2 km

M3.3 Earthquake near 50 km W of Cantwell, Alaska (United States)

UTC time: 2025-08-20 20:34:48 UTC Local time: —

About this earthquake

On August 20, 2025 at 20:34 UTC, a magnitude M3.3 earthquake occurred near 50 km W of Cantwell, Alaska (United States). The hypocenter lay relatively close to the surface at around 3 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

The event was recorded by USGS. United States: 203 earthquakes were recorded in the past 24 hours, the strongest reaching M3.7.

Details

Magnitude
M3.3
Depth
3.2 km
UTC time
2025-08-20 20:34:48 UTC
Local time
—
Country
United States
City
Alaska
Source
usgs
Coordinates
63.38820, -149.97020
Temperature
10.4°C

Map

Depth profile

Depth profile Depth: 3.2 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 3.2 km
Shallow
3.2 km
3.2 km — shallower 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

  • Buzzard Creek
    Distance: 106 km ·Tuff ring(s) ·Elevation: 830 m ·Last eruption: -1050 ·United States
  • Hayes
    Distance: 231 km ·Stratovolcano ·Elevation: 3'034 m ·Last eruption: 1200 ·United States
  • Spurr
    Distance: 260 km ·Stratovolcano ·Elevation: 3'374 m ·Last eruption: 1992 ·United States
  • Wrangell
    Distance: 340 km ·Shield ·Elevation: 4'278 m ·Last eruption: 1912 ·United States
  • Redoubt
    Distance: 354 km ·Stratovolcano ·Elevation: 3'108 m ·Last eruption: 2009 ·United States
  • Iliamna
    Distance: 408 km ·Stratovolcano ·Elevation: 3'053 m ·Last eruption: 1876 ·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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