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M6.1 Depth: 10.0 km

M6.1 Earthquake near Rat Islands, Aleutian Islands (United States)

UTC time: 2025-08-28 11:07:35 UTC Local time: —

About this earthquake

On August 28, 2025 at 11:07 UTC, a magnitude M6.1 earthquake occurred near Rat Islands, Aleutian Islands (United States). With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Events of this size are considered strong and can be dangerous in inhabited regions.

The data is provided by GFZ and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 155 earthquakes, the strongest at M3.6.

Details

Magnitude
M6.1
Depth
10.0 km
UTC time
2025-08-28 11:07:35 UTC
Local time
—
Country
United States
City
Alaska
Source
gfz
Coordinates
52.19000, 179.82000
Temperature
8.6°C

Map

Depth profile

Depth profile Depth: 10 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 10 km
Shallow
10 km
10 km — shallower than the regional average (15.9 km)
Regional average: 15.9 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

  • Semisopochnoi
    Distance: 33 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Little Sitkin
    Distance: 91 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 105 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Segula
    Distance: 117 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 152 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 267 km ·Stratovolcano ·Elevation: 656 m ·United States

Subsequent earthquakes nearby

Events recorded after this earthquake within 250 km. They are not automatically classified as aftershocks.

First 6 hours8
First 24 hours14
First 72 hours14
Strongest subsequent eventM5.9
M5.82025-08-28 11:07:47 UTC32.0 kmAlaska M5.92025-08-28 11:07:48 UTC21.3 km241 km W of Adak, Alaska M5.92025-08-28 11:07:48 UTC6.4 km M5.92025-08-28 11:07:48 UTC7.0 kmRat Islands M5.52025-08-28 11:07:49 UTC31.4 kmAlaska M5.72025-08-28 11:07:50 UTC7.7 kmEvent of magnitude 5.7, near of Anchorage (Monde) M5.92025-08-28 11:07:50 UTC17.0 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.32025-08-28 11:07:50 UTC15.7 kmRat Islands, Aleutian Islands M5.22025-08-29 09:14:16 UTC74.9 kmAlaska M5.42025-08-29 09:14:17 UTC39.1 kmRat Islands, Aleutian Islands M5.52025-08-29 09:14:24 UTC65.9 km263 km W of Adak, Alaska M5.52025-08-29 09:14:25 UTC64.6 km264 km W of Adak, Alaska

Historical context nearby

Comparison with recorded earthquakes before this event within 250 km.

Magnitude rank#1
Earlier events M≥433
Earlier events M≥516
Compared since2025-01-02

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

Strongest earlier events

M5.42025-07-26 05:03:54 UTC106.2 km M5.42025-07-26 05:03:53 UTC111.3 kmRat Islands, Aleutian Islands, Alaska M5.32025-07-26 23:09:39 UTC107.0 kmRat Islands, Aleutian Islands, Alaska M5.32025-07-26 23:09:38 UTC100.6 km M5.32025-07-26 05:03:53 UTC103.2 kmRat Islands, Aleutian Islands

Historic earthquake map · United States

Open history map
Explore recent and long-term earthquake activity in this country. Use filters to narrow down by magnitude, depth, and date range.

Country statistics · United States

Country overview
View earthquake KPIs, strongest and latest events, and averages for this country.

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