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M5.1 Earthquake near 208 km ESE of Attu Station, Alaska

UTC time: 2026-08-23 23:20:31 UTC Local time: —
Earthquake newsQuakeMap24
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
M5.1
Depth
12.0 km
Source
USGS

208 km ESE of Attu Station, Alaska

Map

M5.1 Earthquake near 208 km ESE of Attu Station, Alaska · 2026-08-23 — Map showing the location of the epicenter
M5.1 Earthquake near 208 km ESE of Attu Station, Alaska · 2026-08-23 — Map showing the location of the epicenter

About this earthquake

On August 23, 2026 at 23:20 UTC, a magnitude M5.1 earthquake occurred near 208 km ESE of Attu Station, Alaska. With a focal depth of about 12 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size can cause damage near the epicenter.

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

Details

ID
bd58144d4934ebafd6f5f4464c80157af8163a1d
Magnitude
M5.1
Depth
12.0 km
UTC time
2026-08-23 23:20:31 UTC
Local time
—
Country
—
Source
usgs
Coordinates
51.91400, 175.83400
Temperature
9.7°C

Depth profile

Depth profile Depth: 12 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 12 km
Shallow
12 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

Estimated impact

1 Felt reports · max reported intensity 3.1

Ground shaking

IV
Light · Intensity (MMI) IV
Felt by many, no damage.

Tectonic context

Located on the North America Plate.
Near the boundary North America ↔ Pacific · about 91 km away

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Petropavlovsk-Kamchatskiy1169.2 kmW181'216

GeoNames · CC BY 4.0

Volcanoes nearby

  • Buldir
    Distance: 49 km ·Stratovolcano ·Elevation: 656 m ·United States
  • Kiska
    Distance: 123 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Segula
    Distance: 158 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Davidof
    Distance: 171 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Little Sitkin
    Distance: 186 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Semisopochnoi
    Distance: 257 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·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

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#42
Earlier events M≥4139
Earlier events M≥550
Compared since2025-06-17

The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.

Strongest earlier events

M6.52026-03-04 17:54:38 UTC53.3 km224 km ESE of Attu Station, Alaska M6.42026-03-04 17:54:36 UTC53.3 km###.# km ( ###.# mi) NW (az= 308.7) from Wendover, UT M6.12026-03-04 17:54:37 UTC109.5 kmRat Islands, Aleutian Islands M6.12026-01-15 08:52:45 UTC77.9 kmRat Islands, Aleutian Islands, United States [Sea: United States] M6.02026-03-06 21:08:20 UTC61.5 km228 km ESE of Attu Station, Alaska

Stats (last 24h)

Global (24h)
512
Country (24h)
—
—
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