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M4.8 Depth: 72.0 km

M4.8 Earthquake near Rat Islands, Aleutian Islands (United States)

UTC time: 2025-07-21 19:07:23 UTC Local time: —

About this earthquake

A magnitude M4.8 earthquake was recorded near Rat Islands, Aleutian Islands (United States) on July 21, 2025 at 19:07 UTC. At around 72 km, the focal depth places this among intermediate-depth events. Tremors of this size are distinctly felt and can occasionally cause light damage.

The event was recorded by GFZ. United States: 157 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

Magnitude
M4.8
Depth
72.0 km
UTC time
2025-07-21 19:07:23 UTC
Local time
—
Country
United States
City
Alaska
Source
gfz
Coordinates
51.50000, 179.68000
Temperature
8.9°C

Map

Depth profile

Depth profile Depth: 72 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 72 km
Intermediate
72 km
72 km — deeper than the regional average (15.9 km)
Regional average: 15.9 km
Why depth matters

Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.

Depth classes per USGS

Volcanoes nearby

  • Semisopochnoi
    Distance: 48 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Little Sitkin
    Distance: 93 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 107 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Segula
    Distance: 121 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 158 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 275 km ·Stratovolcano ·Elevation: 656 m ·United States

Historic earthquake map · United States

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Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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