Magnitude 4.1 earthquake strikes 235 km ESE of Attu Station, Alaska

A magnitude 4.1 earthquake occurred today at 2026-07-19T21:36:51.845Z UTC, located 235 km ESE of Attu Station, Alaska. The seismic event registered at a depth of 34.513 km. Its coordinates were recorded at 51.9557 latitude and 176.3277 longitude.

The U.S. Geological Survey (USGS) consistently monitors and reports on seismic activity worldwide, providing data such as magnitude, location, depth, and time of earthquakes. Magnitude measures the energy released at the earthquake's source, and depth indicates how far below the Earth's surface the rupture occurred. Locational data like "235 km ESE of Attu Station, Alaska" specifies the distance and direction from a known geographical point.