M2.3 Earthquake 37 km ESE of Denali National Park, Alaska — August 28, 2025
2025-08-28 20:43:33 UTC (2025-08-28) · approx. 10:43 AM UTC-10 local
On August 28, 2025 at 20:43 UTC, a magnitude 2.3 shallow crustal earthquake struck 37 km ESE of Denali National Park, Alaska, at a depth of 13.3 km and coordinates 63.4736°, -150.9928°.
Physical scale: An earthquake of magnitude 2.3 releases seismic energy equivalent to roughly 42.5 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 23 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
-150.9928°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 2.3 earthquake near Denali National Park, Alaska?
The magnitude 2.3 earthquake that struck 37 km ESE of Denali National Park, Alaska on August 28, 2025 at 20:43 UTC had a depth of 13.3 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 2.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 2.3 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak025b1958zt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, August 28, 2025). M2.3 Earthquake 37 km ESE of Denali National Park, Alaska — August 28, 2025. Retrieved November 6, 2025 from https://www.earthquaketracker.org/earthquakes/event/ak025b1958zt/