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M4.3 Depth: 35.0 km

M4.3 Earthquake near 188 km WNW of Attu Station, Alaska

UTC time: 2025-10-18 13:07:50 UTC Local time: —

About this earthquake

A magnitude M4.3 earthquake was recorded near 188 km WNW of Attu Station, Alaska on October 18, 2025 at 13:07 UTC. The hypocenter lay relatively close to the surface at around 35 km, increasing how strongly it was felt. Tremors of this size are distinctly felt and can occasionally cause light damage.

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

Details

Magnitude
M4.3
Depth
35.0 km
UTC time
2025-10-18 13:07:50 UTC
Local time
—
Country
—
Source
usgs
Coordinates
53.43110, 170.53450
Temperature
5.4°C

Map

Depth profile

Depth profile Depth: 35 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 35 km
Shallow
35 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

  • Piip
    Distance: 303 km ·Stratovolcano ·Elevation: -300 m ·Last eruption: -5050 ·Russia
  • Buldir
    Distance: 380 km ·Stratovolcano ·Elevation: 656 m ·United States
  • Kiska
    Distance: 498 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States

Stats (last 24h)

Global (24h)
520
Country (24h)
—
—
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No recent events available.

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