M4.0 Depth: 74.6 km

M4.0 Earthquake near RAT ISLANDS, ALEUTIAN ISLANDS (United States)

UTC time: 2025-05-23 04:38:38 UTC Local time: —

About this earthquake

On May 23, 2025 at 04:38 UTC, a magnitude M4.0 earthquake occurred near RAT ISLANDS, ALEUTIAN ISLANDS (United States). The earthquake originated at an intermediate depth of about 75 km. Tremors of this size are distinctly felt and can occasionally cause light damage.

The data is provided by EMSC and cross-checked across seismological networks. United States: 164 earthquakes were recorded in the past 24 hours, the strongest reaching M3.6.

Details

Magnitude

M4.0

Depth

74.6 km

UTC time

2025-05-23 04:38:38 UTC

Local time

—

Country

United States

City

Alaska

Source

emsc

Coordinates

51.57520, 178.41330

Temperature

5.9°C

Map

Depth profile

Intermediate

74.6 km

74.6 km — deeper than the regional average (15.3 km)

Regional average: 15.3 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

Little Sitkin

Distance: 43 km ·Stratovolcano ·Elevation: 1'174 m ·Last eruption: 1830 ·United States
Davidof

Distance: 44 km ·Stratovolcano ·Elevation: 328 m ·United States
Segula

Distance: 52 km ·Stratovolcano ·Elevation: 1'160 m ·United States
Kiska

Distance: 81 km ·Stratovolcano ·Elevation: 1'220 m ·Last eruption: 1990 ·United States
Semisopochnoi

Distance: 89 km ·Stratovolcano ·Elevation: 1'221 m ·Last eruption: 2023 ·United States
Buldir

Distance: 192 km ·Stratovolcano ·Elevation: 656 m ·United States

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.

Stats (last 24h)

Global (24h)

600

Country (24h)