M 3.7 Earthquake 141 km ESE of Cordova, Alaska
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A magnitude 3.7 ml earthquake struck 141 km east-southeast of Cordova, Alaska at a depth of 5 km.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on August 17, 2026 and geographically references Alaska. Its severity classification of "low" signals how the issuing agency weighs the risk of harm if no action is taken - "critical" and "high" tier alerts typically carry direct consumer actions, while "medium" and "low" tend toward informational guidance or monitoring advisories. The category it belongs to - Earthquakes - determines the monitoring protocol behind it, which shapes what follow-up action (checking for structural damage, watching for aftershocks, reviewing local building codes) is relevant and which agency holds authority over the assessment.
Most readers skim a notice like this, check whether they are personally affected, and move on. The more useful lens is to verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are earthquake, seismic, usgs, Alaska.
What Happened
A M 3.7 ml earthquake occurred 141 km ESE of Cordova, Alaska at 2026-08-17 12:51:06 UTC (Unix time 1786932666348). The event had a depth of 5 km.
Location Details
The earthquake was located at coordinates 60.164°N, 143.315°W, 141 km east-southeast of Cordova, Alaska. A depth of 5 km is classified as shallow (less than 20 km).
Impact Assessment
No felt reports were recorded. The Modified Mercalli Intensity was estimated at 3.856. No tsunami advisory was issued (tsunami field = 0) and no alert level was assigned.
What You Should Know
This was a minor earthquake (M 2.5-3.9) that is often felt but rarely causes damage. Aftershocks are possible following any earthquake.
Source
Data from USGS: https://earthquake.usgs.gov/earthquakes/eventpage/aka2026qfhjhd
Original source: USGS Official Notice ↗
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