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M4.8 Earthquake near 77 km SE of Atka, Alaska

UTC time: 2026-08-02 05:18:40 UTC Local time: —
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Archive record · original publication time was not recorded

Automatically generated from measurement data by QuakeMap24. Values may change after further analysis. How our reports are produced ↗

Magnitude
M4.8
Depth
44.3 km
Source
USGS

77 km SE of Atka, Alaska

Map

About this earthquake

A magnitude M4.8 earthquake was recorded near 77 km SE of Atka, Alaska on August 2, 2026 at 05:18 UTC. The hypocenter lay relatively close to the surface at around 44 km, increasing how strongly it was felt. Earthquakes of this magnitude are clearly felt; minor damage to vulnerable buildings is possible.

The event was recorded by USGS.

Details

ID
90fe20409a2f18717a899acb27cfa27265210470
Magnitude
M4.8
Depth
44.3 km
UTC time
2026-08-02 05:18:40 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.65790, -173.47980
Temperature
12.0°C

Depth profile

Depth profile Depth: 44.3 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 44.3 km
Shallow
44.3 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

Ground shaking

III
Weak · Intensity (MMI) III
Felt by a few, no damage.

Tectonic context

Located on the North America Plate.
Near the boundary North America ↔ Pacific · about 78 km away

Volcanoes nearby

  • Atka Volcanic Complex
    Distance: 87 km ·Stratovolcano(es) ·Elevation: 1'518 m ·Last eruption: 2025 ·United States
  • Seguam
    Distance: 99 km ·Stratovolcano(es) ·Elevation: 1'054 m ·Last eruption: 1993 ·United States
  • Koniuji
    Distance: 129 km ·Stratovolcano ·Elevation: 273 m ·Last eruption: -1150 ·United States
  • Kasatochi
    Distance: 151 km ·Stratovolcano ·Elevation: 314 m ·Last eruption: 2008 ·United States
  • Amukta
    Distance: 179 km ·Stratovolcano ·Elevation: 1'066 m ·Last eruption: 1996 ·United States
  • Great Sitkin WATCH · ORANGE
    Distance: 188 km ·Stratovolcano ·Elevation: 1'740 m ·Last eruption: 2026 ·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)
504
Country (24h)
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