Magnitude
M5.9
- Depth
- 135.9 km
- Source
- INGV
Alaska
Country overviewUnited States
M5.9 Earthquake near Rat Islands, Aleutian Islands, United States [Sea: United States] (United States)
Earthquake newsQuakeMap24
Archive record · original publication time was not recorded
Automatically generated from measurement data by QuakeMap24. Values may change after further analysis.
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About this earthquake
A magnitude M5.9 earthquake was recorded near Rat Islands, Aleutian Islands, United States [Sea: United States] (United States) on August 28, 2025 at 11:07 UTC. At around 136 km, the focal depth places this among intermediate-depth events. Earthquakes of this magnitude can damage poorly built structures.
The data is provided by INGV and cross-checked across seismological networks. United States: over the past 24 hours, QuakeMap24 logged 185 earthquakes, the strongest at M3.0.
Details
ID
c1de42a1dfe6c9aa8dd495c8a9a0689db5318a7c
Magnitude
M5.9
Depth
135.9 km
UTC time
2025-08-28 11:07:50 UTC
Local time
—
Country
City
Source
ingv
Coordinates
52.07340,
179.98100
Temperature
8.6°C
Depth profile
Intermediate
135.9 km
135.9 km — deeper than the regional average (15.2 km)
Regional average: 15.2 km
Why depth matters
Intermediate-depth quakes are felt across a wider area but usually cause less surface damage.
Depth classes per USGS
Volcanoes nearby
Subsequent earthquakes nearby
Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.
First 6 hours0
First 24 hours6
First 72 hours6
Strongest subsequent eventM5.5
M5.22025-08-29 09:14:16 UTC65.7 kmAlaska
M5.42025-08-29 09:14:17 UTC36.5 kmRat Islands, Aleutian Islands
M5.52025-08-29 09:14:24 UTC57.8 km263 km W of Adak, Alaska
M5.52025-08-29 09:14:25 UTC57.0 km264 km W of Adak, Alaska
M5.52025-08-29 09:14:25 UTC50.6 kmRAT ISLANDS, ALEUTIAN ISLANDS
M5.02025-08-29 09:14:26 UTC65.8 kmAlaska
M5.02025-09-13 01:58:48 UTC48.3 kmRat Islands, Aleutian Islands
M4.52025-09-13 01:58:55 UTC72.0 kmAlaska
M4.52025-09-13 01:58:56 UTC66.9 kmRAT ISLANDS, ALEUTIAN ISLANDS
M4.52025-09-16 19:10:30 UTC132.2 kmRat Islands, Aleutian Islands, Alaska
M3.22025-09-17 01:13:38 UTC67.1 km230 km WSW of Adak, Alaska
M3.02025-09-17 01:13:38 UTC59.9 kmANDREANOF ISLANDS, ALEUTIAN IS.
Alaska
Context for this earthquake
21 Sep 2025 – 21 Sep 2026 · M ≥ 3.0 · 653 Catalogue entries
Sufficiently reliable matching data are not currently available for a direct comparison. The area profile shows the available records and their limitations.
Open seismic profileHistorical context nearby
Comparison with recorded earthquakes before this event within 150 km.
Magnitude rank#2
Earlier events M≥429
Earlier events M≥517
Compared since2025-01-30
The QuakeMap24 comparison dataset begins on 2024-03-23. Earlier earthquakes may not be included.
Strongest earlier events
Historic earthquake map · United States
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
View earthquake KPIs, strongest and latest events, and averages for this country.
Stats (last 24h)
Global (24h)
664
Country (24h)
United States
185
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