M4.1 Earthquake near Rat Islands, Aleutian Islands, Alaska — July 13, 2026
2026-07-13 19:01:07 UTC (4 days ago) · approx. 7:01 AM UTC+12 local
On July 13, 2026 at 19:01 UTC, a magnitude 4.1 intermediate depth earthquake struck near Rat Islands, Aleutian Islands, Alaska, at a depth of 160.4 km and coordinates 51.2859°, 177.7510°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
177.7510°E
Technical Information
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Common Questions
How strong was the magnitude 4.1 earthquake near Rat Islands, Aleutian Islands, Alaska?
The magnitude 4.1 earthquake that struck near Rat Islands, Aleutian Islands, Alaska on July 13, 2026 at 19:01 UTC had a depth of 160.4 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000t09p). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 13, 2026). M4.1 Earthquake near Rat Islands, Aleutian Islands, Alaska — July 13, 2026. Retrieved July 16, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t09p/