M 3.1 Earthquake Recorded 67 km SSE of Chignik, Alaska

Source: USGS · Alaska

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A minor 3.1 magnitude earthquake occurred early Thursday morning near Chignik, Alaska, at a depth of 29.8 kilometers. No damage or tsunami warnings were reported.

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

This notice was issued by USGS on March 19, 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 3.1 ml occurred on March 26, 2026, at 04:15:21 UTC. The event was centered approximately 67 kilometers south-southeast of Chignik, Alaska. The earthquake occurred at a depth of 29.8 kilometers.

Location Details

The seismic event was located at coordinates 55.722°N and 158.058°W. The depth of 29.8 km places this earthquake in the intermediate category (20-70 km), which can sometimes reduce the intensity of shaking felt at the surface compared to shallower events.

Impact Assessment

According to the U.S. Geological Survey (USGS), there were no immediate reports of the earthquake being felt by residents in the region. There is no tsunami advisory, watch, or warning in effect for this event. No alert level color has been assigned to this routine seismic activity.

What You Should Know

Earthquakes of magnitude 2.5 to 3.9 are classified as minor. While they are often felt by people near the epicenter, they rarely cause structural damage. Residents in seismically active areas like Alaska are encouraged to remain prepared for routine seismic activity and potential aftershocks.

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 3.1 magnitude earthquake occurred early Thursday morning near Chignik, Alaska, at a depth of 29.8 kilometers. No damage or tsunami warnings were reported.
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.