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M5.0 Depth: 56.4 km

M5.0 Earthquake near RAT ISLANDS, ALEUTIAN ISLANDS (United States)

UTC time: 2025-07-21 19:07:20 UTC Local time: —

About this earthquake

On July 21, 2025 at 19:07 UTC, a magnitude M5.0 earthquake occurred near RAT ISLANDS, ALEUTIAN ISLANDS (United States). The hypocenter lay relatively close to the surface at around 56 km, increasing how strongly it was felt. Events of this size can cause damage near the epicenter.

The event was recorded by EMSC. United States: over the past 24 hours, QuakeMap24 logged 154 earthquakes, the strongest at M3.6.

Details

Magnitude
M5.0
Depth
56.4 km
UTC time
2025-07-21 19:07:20 UTC
Local time
—
Country
United States
City
Alaska
Source
emsc
Coordinates
51.32750, 179.57260
Temperature
8.9°C

Map

Depth profile

Depth profile Depth: 56.4 km (Shallow) Surface Shallow Intermediate Deep 0 km 70 km 300 km 700 km 56.4 km
Shallow
56.4 km
56.4 km — deeper than the regional average (15.9 km)
Regional average: 15.9 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: 67 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
  • Little Sitkin
    Distance: 99 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
  • Davidof
    Distance: 112 km ·Stratovolcano ·Elevation: 328 m ·United States
  • Segula
    Distance: 125 km ·Stratovolcano ·Elevation: 1'160 m ·United States
  • Kiska
    Distance: 161 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
  • Buldir
    Distance: 276 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 eventM5.4
M4.82025-07-21 19:07:23 UTC20.6 kmRat Islands, Aleutian Islands M5.22025-07-26 05:03:52 UTC85.9 kmRat Islands, Aleutian Islands, Alaska M5.42025-07-26 05:03:53 UTC90.9 kmRat Islands, Aleutian Islands, Alaska M5.32025-07-26 05:03:53 UTC92.5 kmRat Islands, Aleutian Islands M5.42025-07-26 05:03:54 UTC88.6 km M5.32025-07-26 23:09:38 UTC113.9 km M5.22025-07-26 23:09:39 UTC98.7 kmRat Islands, Aleutian Islands, Alaska M5.32025-07-26 23:09:39 UTC121.1 kmRat Islands, Aleutian Islands, Alaska M5.12025-07-26 23:09:40 UTC127.6 kmRat Islands, Aleutian Islands M0.42025-07-30 18:59:48 UTC126.8 km146 km W of Adak, Alaska M4.72025-08-18 06:10:39 UTC109.9 km

Historical context nearby

Comparison with recorded earthquakes before this event within 150 km.

Magnitude rank#2
Earlier events M≥411
Earlier events M≥52
Compared since2025-01-30

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

Strongest earlier events

M5.22025-04-16 03:49:49 UTC142.4 km146 km SW of Adak, Alaska M5.02025-07-21 19:07:19 UTC9.6 km274 km WSW of Adak, Alaska M4.92025-02-21 07:07:09 UTC101.9 kmRat Islands, Aleutian Islands, Alaska M4.42025-03-16 22:46:22 UTC104.1 kmRat Islands, Aleutian Islands, Alaska M4.42025-01-30 04:53:11 UTC115.5 kmRat Islands, Aleutian Islands, Alaska

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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