M3.1 Earthquake 224 km ESE of Attu Station, Alaska — July 15, 2026
2026-07-15 12:35:49 UTC (7 hours ago) · approx. 12:35 AM UTC+12 local
On July 15, 2026 at 12:35 UTC, a magnitude 3.1 shallow crustal earthquake struck 224 km ESE of Attu Station, Alaska, at a depth of 10.0 km and coordinates 51.9820°, 176.1750°.
Physical scale: An earthquake of magnitude 3.1 releases seismic energy equivalent to roughly 674 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 83 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
176.1750°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.1 earthquake near Attu Station, Alaska?
The magnitude 3.1 earthquake that struck 224 km ESE of Attu Station, Alaska on July 15, 2026 at 12:35 UTC had a depth of 10.0 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.1 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 3.1 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026nxdmfp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 15, 2026). M3.1 Earthquake 224 km ESE of Attu Station, Alaska — July 15, 2026. Retrieved July 15, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026nxdmfp/