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M5.5 Depth: 10.0 km

M5.5 Earthquake near Rat Islands, Aleutian Islands

UTC time: 2026-05-09 04:42:22 UTC Local time: —

About this earthquake

A magnitude M5.5 earthquake was recorded near Rat Islands, Aleutian Islands on May 9, 2026 at 04:42 UTC. With a focal depth of about 10 km, this was a shallow earthquake, whose shaking is usually felt more strongly at the surface. Earthquakes of this magnitude can damage poorly built structures.

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

Details

Magnitude
M5.5
Depth
10.0 km
UTC time
2026-05-09 04:42:22 UTC
Local time
—
Country
—
Source
gfz
Coordinates
51.35000, 179.37000
Temperature
4.3°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
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: 66 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Little Sitkin
    Distance: 88 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 99 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Segula
    Distance: 113 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 148 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 262 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 hours4
First 24 hours4
First 72 hours4
Strongest subsequent eventM5.9
M5.82026-05-09 04:42:23 UTC29.9 km###.# km ( ###.# mi) NW (az= 306.5) from Wendover, UT M5.32026-05-09 04:42:23 UTC44.8 kmRat Islands, Aleutian Islands, Alaska M5.92026-05-09 04:42:25 UTC12.4 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.82026-05-09 04:42:26 UTC7.9 km M3.92026-05-13 03:37:20 UTC40.1 km295 km WSW of Adak, Alaska M0.72026-05-22 18:34:33 UTC128.7 kmUnorganized Borough M4.02026-05-25 05:28:14 UTC40.0 km M2.62026-05-26 21:56:37 UTC120.8 km161 km WSW of Adak, Alaska M4.62026-05-27 05:57:10 UTC68.3 km M4.62026-05-27 05:57:11 UTC67.1 kmRat Islands, Aleutian Islands, Alaska M4.82026-05-27 05:57:12 UTC46.0 kmRat Islands, Aleutian Islands M3.12026-05-27 21:50:21 UTC110.8 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#11
Earlier events M≥481
Earlier events M≥540
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 UTC98.4 kmRat Islands, Aleutian Islands M5.92025-08-28 11:07:50 UTC90.8 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.92025-08-28 11:07:48 UTC79.8 km241 km W of Adak, Alaska M5.92025-08-28 11:07:48 UTC103.4 km M5.92025-08-28 11:07:48 UTC92.8 kmRat Islands

Stats (last 24h)

Global (24h)
664
Country (24h)
—
—
Current earthquakes in
Magnitude Place Local time
No recent events available.

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