M 3.5 Earthquake Recorded 255 km SE of Chiniak, Alaska

Source: USGS · Alaska

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A minor 3.5 magnitude earthquake occurred in the Gulf of Alaska on March 12, 2026. The shallow event was centered 255 km southeast of Chiniak at a depth of 10 kilometers.

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

This notice was issued by USGS on March 9, 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 regulatory framework behind it, which shapes what remedies (refunds, replacements, recalls, evacuations) are available to affected individuals and who holds statutory responsibility for enforcement.

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 minor earthquake with a magnitude of 3.5 ml occurred on March 12, 2026, at 14:36:11 UTC. The seismic event was centered approximately 255 km southeast of Chiniak, Alaska. The earthquake has been reviewed by seismologists at the USGS.

Location Details

The earthquake's coordinates were recorded at 55.989°N and 149.313°W. The event originated at a depth of 10 kilometers. This is classified as a shallow earthquake; seismic events occurring at depths of less than 20 kilometers are typically more likely to be felt by those in the immediate vicinity than deeper events, though the remote offshore location limits potential impact.

Impact Assessment

At this time, there have been no felt reports submitted to the USGS regarding this event. No tsunami advisory, watch, or warning has been issued. Given the magnitude and location, no damage or injuries are expected.

What You Should Know

Earthquakes with magnitudes between 2.5 and 3.9 are classified as minor. While they are routine geological events in seismically active regions like Alaska, they are often felt but rarely cause damage. Residents are reminded that aftershocks are a possibility following any seismic event, though they are typically smaller than the initial quake.

Source

Data provided by the USGS Earthquake Hazards Program.

Original source: USGS Official Notice ↗

All Earthquakes →

Frequently Asked Questions

Common questions about this USGS earthquake report.

What is this USGS earthquake report about?
A minor 3.5 magnitude earthquake occurred in the Gulf of Alaska on March 12, 2026. The shallow event was centered 255 km southeast of Chiniak at a depth of 10 kilometers.
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.