M 5.2 Earthquake Strikes 180 km SSE of Attu Station, Alaska
Areazine synthesizes this USGS earthquake report directly from USGS's official public data feed. See our methodology for full source attribution and refresh cadence.
A magnitude 5.2 earthquake occurred 180 km SSE of Attu Station, Alaska, at a depth of 46.1 km on June 28, 2026.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 14, 2026 and geographically references Alaska. Its severity classification of "medium" 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 read it as a data point about the issuing system: how quickly USGS detected the hazard, how precise the geographic or product-identifier scope is, and whether similar notices have clustered in the same category or region in the last 90 days. Cluster patterns frequently precede a broader regulatory action, a single localized USGS earthquake report is isolated; three of them within a quarter often indicate a supply-chain, infrastructure, or seasonal driver that will keep producing notices until something structural changes.
For decision-making, Areazine pairs each alert with the original agency URL, the full agency name, and a timestamp so you can verify the notice against the primary source before acting on it. Tags on this item (earthquake, seismic, usgs, Alaska) map to related alerts in the same area of risk - browsing them together gives a clearer picture than any single notice alone, because the shape of an ongoing issue only becomes visible across multiple sequential alerts.
What Happened
A magnitude 5.2 ml earthquake struck 180 km SSE of Attu Station, Alaska, on June 28, 2026, at 07:12 UTC. The earthquake occurred at a depth of 46.1 km.
Location Details
The epicenter was at coordinates 51.303 latitude and 173.987 longitude, relative to Attu Station in Alaska. This depth of 46.1 km is considered intermediate (between 20-70 km), which means it could affect a broader area compared to shallow earthquakes.
Impact Assessment
There were no felt reports available for this earthquake. No tsunami advisory was issued, and no alert level was specified.
What You Should Know
This moderate earthquake may be followed by aftershocks, as is common with seismic events. Safety tips include securing heavy items at home and following local emergency guidelines if shaking is felt.
Source
Data from USGS: https://earthquake.usgs.gov/earthquakes/eventpage/aka2026hibehg
Original source: USGS Official Notice ↗
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