Back to map

M3.9 Earthquake near 128 km SSE of Atka, Alaska

UTC time: 2026-07-27 10:12:07 UTC Local time: —
Magnitude
M3.9
Depth
35.0 km
Source
USGS

128 km SSE of Atka, Alaska

Map

About this earthquake

On July 27, 2026 at 10:12 UTC, a magnitude M3.9 earthquake occurred near 128 km SSE of Atka, Alaska. The hypocenter lay relatively close to the surface at around 35 km, increasing how strongly it was felt. Shaking of this size is frequently noticed but usually harmless.

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

Details

ID
77fcffac76cff9ef31a3bf7d7bd2a18281d5de3c
Magnitude
M3.9
Depth
35.0 km
UTC time
2026-07-27 10:12:07 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.23460, -173.15810
Temperature
11.5°C

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

  • Seguam
    Distance: 128 km ·Stratovolcano(es) ·Elevation: 1'054 m ·Last eruption: 1993 ·United States
  • Atka Volcanic Complex
    Distance: 139 km ·Stratovolcano(es) ·Elevation: 1'518 m ·Last eruption: 2025 ·United States
  • Koniuji
    Distance: 174 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States
  • Amukta
    Distance: 192 km ·Stratovolcano ·Elevation: 1'066 m ·Last eruption: 1996 ·United States
  • Kasatochi
    Distance: 193 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Chagulak
    Distance: 203 km ·Stratovolcano ·Elevation: 1'028 m ·United States

No unambiguous area assignment

Context for this earthquake

This event has no unambiguous country assignment in the analysed catalogue. It is therefore not assigned to a regional profile.

Earthquake overview

Stats (last 24h)

Global (24h)
505
Country (24h)
—
—
Current earthquakes in
Magnitude Place Local time
No recent events available.

Share