M3.5 Earthquake 54 km E of Denali National Park, Alaska — July 28, 2026
2026-07-28 20:52:22 UTC (2 hours ago) · approx. 10:52 AM UTC-10 local
On July 28, 2026 at 20:52 UTC, a magnitude 3.5 shallow crustal earthquake struck 54 km E of Denali National Park, Alaska, at a depth of 0.7 km and coordinates 63.5610°, -150.6330°.
Physical scale: An earthquake of magnitude 3.5 releases seismic energy equivalent to roughly 2.7 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 157 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.0 mainshock that occurred 2 hours ago 52 km E of Denali National Park, Alaska. Since the mainshock, the USGS has recorded 3 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 4 citizen responses 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
-150.6330°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.5 earthquake near Denali National Park, Alaska?
The magnitude 3.5 earthquake that struck 54 km E of Denali National Park, Alaska on July 28, 2026 at 20:52 UTC had a depth of 0.7 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 3.5 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.0 one earlier?
No. This magnitude 3.5 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 52 km E of Denali National Park, Alaska. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 3.5 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: aka2026ovuicj). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2026, July 28, 2026). M3.5 Earthquake 54 km E of Denali National Park, Alaska — July 28, 2026. Retrieved July 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/aka2026ovuicj/