M 3.0 Earthquake Recorded 230 km SE of Chiniak, Alaska

Source: USGS · Alaska

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A minor 3.0 magnitude earthquake was detected by the USGS early Thursday morning, located approximately 230 kilometers southeast of Chiniak, Alaska, at a shallow depth of 5 kilometers.

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

This notice was issued by USGS on March 5, 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 3.0 (ml) occurred on March 5, 2026, at 06:35:00 UTC. The seismic event was centered approximately 230 km southeast of Chiniak, Alaska. The earthquake occurred at a shallow depth of 5 kilometers.

Location Details

The earthquake's epicenter was located at coordinates 56.344°N and 149.281°W. This location is in the Gulf of Alaska, southeast of the Kodiak Island archipelago. The depth of 5 kilometers is considered very shallow; earthquakes occurring at depths less than 20 kilometers are categorized as shallow and are more likely to be felt if they occur near populated areas.

Impact Assessment

According to the USGS, there was no tsunami advisory, watch, or warning issued in connection with this event. As of the latest report, there have been no citizen-submitted felt reports recorded for this earthquake. Given the magnitude and the remote offshore location, no damage or injuries are expected from this event.

What You Should Know

Earthquakes with magnitudes between 2.5 and 3.9 are classified as minor. While they are often recorded by seismographs, they are rarely felt by people unless they are very close to the epicenter, and they typically do not cause structural damage. Routine seismic activity is common in the coastal regions of Alaska.

Source

Information 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 3.0 magnitude earthquake was detected by the USGS early Thursday morning, located approximately 230 kilometers southeast of Chiniak, Alaska, at a shallow depth of 5 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.