M 3.5 Earthquake 65 km East of Adak, Alaska

Source: USGS · 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 3.5 magnitude earthquake occurred 65 km east of Adak, Alaska, at a depth of 156.4 km on January 28, 2026, at 11:49 PM UTC.

What this USGS earthquake report tells you, and what most readers miss

This notice was issued by USGS on April 7, 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 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 3.5 magnitude earthquake, classified as M 3.5 ml, struck 65 km E of Adak, Alaska, on January 28, 2026, at 11:49 PM UTC. The event occurred at a depth of 156.4 km.

Location Details

The earthquake was centered at coordinates 51.886 latitude and -175.689 longitude, relative to Adak in Alaska. At 156.4 km deep, this is considered a deep earthquake (greater than 70 km), which typically occurs in the Earth's mantle and may cause less intense shaking at the surface compared to shallower events.

Impact Assessment

No felt reports were available for this event. There is no tsunami advisory, as indicated by the data.

What You Should Know

This minor earthquake, with a magnitude of 3.5, is often felt but rarely causes damage. It is possible for aftershocks to occur, so residents should be aware of general safety tips such as dropping to the ground, covering their head and neck, and holding on during any shaking.

Source

Data from USGS: [https://earthquake.usgs.gov/earthquakes/eventpage/aka2026guhote]

Original source: USGS Official Notice ↗

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Frequently Asked Questions

Common questions about this USGS earthquake report.

What is this USGS earthquake report about?
A 3.5 magnitude earthquake occurred 65 km east of Adak, Alaska, at a depth of 156.4 km on January 28, 2026, at 11:49 PM UTC.
Which agency issued this alert?
This alert was issued by USGS. The original notice is available at the source link at the bottom of this article.
How severe is this alert?
This alert is classified as "low" severity. No immediate action required, but stay aware.
What area is affected?
This alert affects Alaska. Check with USGS for the most current geographic scope.
Where can I find more Earthquakes updates?
Browse the full Earthquakes feed on Areazine at areazine.com/earthquakes/ for the latest updates from USGS and other agencies.