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M5.5 Earthquake near Rat Islands, Aleutian Islands

UTC time: 2026-05-09 04:42:20 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
M5.5
Depth
10.0 km
Source
USP

Rat Islands, Aleutian Islands

Map

M5.5 Earthquake near Rat Islands, Aleutian Islands · 2026-05-09 — Map showing the location of the epicenter
M5.5 Earthquake near Rat Islands, Aleutian Islands · 2026-05-09 — Map showing the location of the epicenter

About this earthquake

On May 9, 2026 at 04:42 UTC, a magnitude M5.5 earthquake occurred near Rat Islands, Aleutian Islands. 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 can cause damage near the epicenter.

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

Details

ID
463a1f5ce64ff88fb6db17f808dc25f1763b7f85
Magnitude
M5.5
Depth
10.0 km
UTC time
2026-05-09 04:42:20 UTC
Local time
—
Country
—
Source
usp
Coordinates
51.15530, 179.59381

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
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: 86 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Little Sitkin
    Distance: 114 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 126 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Segula
    Distance: 139 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 173 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 286 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 hours8
First 24 hours8
First 72 hours8
Strongest subsequent eventM5.9
M5.62026-05-09 04:42:21 UTC32.9 kmRat Islands, Aleutian Islands, Alaska M5.52026-05-09 04:42:21 UTC31.5 kmUnorganized Borough M5.52026-05-09 04:42:22 UTC26.7 kmRat Islands, Aleutian Islands M5.32026-05-09 04:42:22 UTC33.0 kmEvent of magnitude 5.3, near Anchorage (Monde) M5.92026-05-09 04:42:22 UTC18.9 km292 km WSW of Adak, Alaska M5.32026-05-09 04:42:23 UTC37.2 kmRat Islands, Aleutian Islands, Alaska M5.92026-05-09 04:42:25 UTC27.4 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.82026-05-09 04:42:26 UTC29.0 kmRAT ISLANDS, ALEUTIAN ISLANDS M3.92026-05-13 03:37:20 UTC24.6 km295 km WSW of Adak, Alaska M0.72026-05-22 18:34:33 UTC125.9 kmUnorganized Borough M4.02026-05-25 05:28:14 UTC26.7 kmRAT ISLANDS, ALEUTIAN ISLANDS M2.62026-05-26 21:56:37 UTC113.4 km161 km WSW of Adak, Alaska

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#12
Earlier events M≥488
Earlier events M≥547
Compared since2025-01-30

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

Strongest earlier events

M6.12026-03-04 17:54:35 UTC111.5 km M6.12025-08-28 11:07:35 UTC116.1 kmRat Islands, Aleutian Islands M5.92025-08-28 11:07:50 UTC105.5 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.92025-08-28 11:07:48 UTC95.7 km241 km W of Adak, Alaska M5.92025-08-28 11:07:48 UTC120.3 kmRAT ISLANDS, ALEUTIAN ISLANDS

Stats (last 24h)

Global (24h)
585
Country (24h)
—
—
Current earthquakes in
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No recent events available.

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