M3.0 Earthquake 177 km SE of Adak, Alaska — July 19, 2026
2026-07-19 21:54:05 UTC (2026-07-19) · approx. 9:54 AM UTC-12 local
On July 19, 2026 at 21:54 UTC, a magnitude 3.0 shallow crustal earthquake struck 177 km SE of Adak, Alaska, at a depth of 12.7 km and coordinates 50.5740°, -175.1550°.
Physical scale: An earthquake of magnitude 3.0 releases seismic energy equivalent to roughly 477 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 71 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-175.1550°E
Technical Information
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Common Questions
How strong was the magnitude 3.0 earthquake near Adak, Alaska?
The magnitude 3.0 earthquake that struck 177 km SE of Adak, Alaska on July 19, 2026 at 21:54 UTC had a depth of 12.7 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 3.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.0 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026ofgdyj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 19, 2026). M3.0 Earthquake 177 km SE of Adak, Alaska — July 19, 2026. Retrieved July 26, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026ofgdyj/