M2.7 Earthquake 41 km NNE of Whittier, Alaska — August 19, 2023
2023-08-19 18:48:45 UTC (2023-08-19) · approx. 8:48 AM UTC-10 local
On August 19, 2023 at 18:48 UTC, a magnitude 2.7 shallow crustal earthquake struck 41 km NNE of Whittier, Alaska, at a depth of 18.5 km and coordinates 61.0931°, -148.2878°.
Physical scale: An earthquake of magnitude 2.7 releases seismic energy equivalent to roughly 169 kg of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 44 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
-148.2878°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 2.7 earthquake near Whittier, Alaska?
The magnitude 2.7 earthquake that struck 41 km NNE of Whittier, Alaska on August 19, 2023 at 18:48 UTC had a depth of 18.5 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 2.7 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 2.7 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: ak023amc5crs). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 19, 2023). M2.7 Earthquake 41 km NNE of Whittier, Alaska — August 19, 2023. Retrieved October 27, 2023 from https://www.earthquaketracker.org/earthquakes/event/ak023amc5crs/