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M4.2 Depth: 18.5 km

M4.2 Earthquake near Rat Islands, Aleutian Islands, Alaska

UTC time: 2026-08-20 02:45:04 UTC Local time: —

About this earthquake

On August 20, 2026 at 02:45 UTC, a magnitude M4.2 earthquake occurred near Rat Islands, Aleutian Islands, Alaska. The hypocenter lay relatively close to the surface at around 19 km, increasing how strongly it was felt. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The data is provided by USGS and cross-checked across seismological networks.

Details

Magnitude
M4.2
Depth
18.5 km
UTC time
2026-08-20 02:45:04 UTC
Local time
—
Country
—
Source
usgs
Coordinates
50.95300, 178.71600
Temperature
10.6°C

Map

Depth profile

Depth profile Depth: 18.5 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 18.5 km
Shallow
18.5 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

  • Little Sitkin
    Distance: 112 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 116 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Semisopochnoi
    Distance: 124 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Segula
    Distance: 125 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 149 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 248 km ·Stratovolcano ·Elevation: 656 m ·United States

Stats (last 24h)

Global (24h)
511
Country (24h)
—
—
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