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M5.6 Depth: 10.0 km

M5.6 Earthquake near Rat Islands, Aleutian Islands

UTC time: 2026-03-06 21:08:22 UTC Local time: —

About this earthquake

On March 6, 2026 at 21:08 UTC, a magnitude M5.6 earthquake occurred near Rat Islands, Aleutian Islands. The hypocenter lay relatively close to the surface at around 10 km, increasing how strongly it was felt. Earthquakes of this magnitude can damage poorly built structures.

The event was recorded by USP.

Details

Magnitude
M5.6
Depth
10.0 km
UTC time
2026-03-06 21:08:22 UTC
Local time
—
Country
—
Source
usp
Coordinates
52.46958, 176.17564

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

Nearby population centers

Distances are straight-line distances from the epicenter. Population data: GeoNames.

PlaceDistanceDirectionPopulation
Petropavlovsk-Kamchatskiy1179.5 kmW181'216

GeoNames · CC BY 4.0

Volcanoes nearby

  • Buldir
    Distance: 22 km ·Stratovolcano ·Elevation: 656 m ·United States
  • Kiska
    Distance: 105 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Segula
    Distance: 143 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Davidof
    Distance: 157 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Little Sitkin
    Distance: 171 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Semisopochnoi
    Distance: 240 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·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 hours3
First 72 hours6
Strongest subsequent eventM5.9
M5.92026-03-06 21:08:23 UTC104.2 km M4.02026-03-07 13:10:48 UTC53.8 kmRAT ISLANDS, ALEUTIAN ISLANDS M3.32026-03-07 14:48:37 UTC83.3 kmRAT ISLANDS, ALEUTIAN ISLANDS M4.92026-03-08 22:41:59 UTC84.0 kmRat Islands, Aleutian Islands M3.02026-03-09 16:47:15 UTC48.3 kmRAT ISLANDS, ALEUTIAN ISLANDS M3.22026-03-09 18:42:40 UTC56.6 kmRAT ISLANDS, ALEUTIAN ISLANDS M3.02026-03-10 00:23:09 UTC59.5 kmRAT ISLANDS, ALEUTIAN ISLANDS M3.72026-03-11 20:37:06 UTC70.7 kmRAT ISLANDS, ALEUTIAN ISLANDS M4.42026-03-11 20:41:48 UTC24.6 km230 km ESE of Attu Station, Alaska M4.42026-03-12 23:07:04 UTC54.7 kmRAT ISLANDS, ALEUTIAN ISLANDS M4.82026-03-13 03:30:33 UTC50.2 kmRat Islands, Aleutian Islands M4.12026-03-13 21:39:22 UTC76.8 kmRAT ISLANDS, ALEUTIAN ISLANDS

Comparison of seismic sources

2 sources currently report magnitudes from M5.6 to M6.0.

Measurements can differ because agencies use different networks and calculation methods. Values may be revised.

SourceMagnitudeDepthPosition difference
NNSNM6.09.3 km24.2 km
USPM5.610.0 km0.0 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#13
Earlier events M≥454
Earlier events M≥527
Compared since2025-06-17

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

Strongest earlier events

M6.52026-03-04 17:54:38 UTC26.0 km224 km ESE of Attu Station, Alaska M6.42026-03-04 17:54:36 UTC25.9 km###.# km ( ###.# mi) NW (az= 308.7) from Wendover, UT M6.12026-03-04 17:54:37 UTC64.0 kmRat Islands, Aleutian Islands M6.12026-01-15 08:52:45 UTC113.3 kmRat Islands, Aleutian Islands, United States [Sea: United States] M5.92026-01-15 08:52:47 UTC89.2 km271 km ESE of Attu Station, Alaska

Stats (last 24h)

Global (24h)
655
Country (24h)
—
—
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