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M5.5 Earthquake near RAT ISLANDS, ALEUTIAN ISLANDS (United States)

UTC time: 2025-12-13 10:51:00 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.

Map

M5.5 Earthquake near RAT ISLANDS, ALEUTIAN ISLANDS (United States) · 2025-12-13 — Map showing the location of the epicenter
M5.5 Earthquake near RAT ISLANDS, ALEUTIAN ISLANDS (United States) · 2025-12-13 — Map showing the location of the epicenter

About this earthquake

A magnitude M5.5 earthquake was recorded near RAT ISLANDS, ALEUTIAN ISLANDS (United States) on December 13, 2025 at 10:51 UTC. The earthquake originated at an intermediate depth of about 120 km. Events of this size can cause damage near the epicenter.

The data is provided by EMSC and cross-checked across seismological networks. United States: 172 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

ID
21af89479caf2f3867d800b24c53df99b205a083
Magnitude
M5.5
Depth
120.0 km
UTC time
2025-12-13 10:51:00 UTC
Local time
—
Country
United States
City
Alaska
Source
emsc
Coordinates
52.02000, 178.38000
Temperature
3.8°C

Depth profile

Depth profile Depth: 120 km (Intermediate) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 120 km
Intermediate
120 km
120 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

  • Davidof
    Distance: 7 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Little Sitkin
    Distance: 14 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Segula
    Distance: 17 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 54 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Semisopochnoi
    Distance: 83 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Buldir
    Distance: 172 km ·Stratovolcano ·Elevation: 656 m ·United States

Subsequent earthquakes nearby

Events recorded after this earthquake within 150 km. They are not automatically classified as aftershocks.

First 6 hours1
First 24 hours1
First 72 hours1
Strongest subsequent eventM5.7
M5.72025-12-13 10:51:01 UTC17.0 kmRat Islands, Aleutian Islands, United States [Sea: United States] M4.92026-01-06 10:57:15 UTC111.7 kmRat Islands, Aleutian Islands M4.82026-01-06 10:57:17 UTC135.0 kmRat Islands, Aleutian Islands, Alaska M4.82026-01-06 10:57:17 UTC133.6 kmRAT ISLANDS, ALEUTIAN ISLANDS

Alaska

Context for this earthquake

04 Oct 2025 – 04 Oct 2026 · M ≥ 3.0 · 653 Catalogue entries

Of 652 other entries for this area and period, 15 have a higher stored magnitude. Different magnitude types and reports not yet merged limit the comparison.

Open seismic profile

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#13
Earlier events M≥451
Earlier events M≥534
Compared since2025-01-30

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

Strongest earlier events

M6.12025-08-28 11:07:35 UTC100.1 kmRat Islands, Aleutian Islands M5.92025-08-28 11:07:50 UTC109.6 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.92025-08-28 11:07:48 UTC101.4 km241 km W of Adak, Alaska M5.92025-08-28 11:07:48 UTC106.1 kmRAT ISLANDS, ALEUTIAN ISLANDS M5.92025-08-28 11:07:48 UTC101.2 kmRat 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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