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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.

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)
664
Country (24h)
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