M 3.0 Earthquake Hits 120 km NNW of Chignik Lake, 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 magnitude 3.0 earthquake occurred 120 km north-northwest of Chignik Lake, Alaska, at a depth of 152.9 km on June 28, 2026, at 5:29 a.m. UTC.

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

This notice was issued by USGS on April 26, 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.

Earthquake Report

What Happened

An earthquake with a magnitude of 3.0 ml struck 120 km NNW of Chignik Lake, Alaska, at a depth of 152.9 km. The event occurred on June 28, 2026, at 5:29 a.m. UTC.

Location Details

The earthquake was centered at coordinates 57.235 latitude and -159.611 longitude, relative to Chignik Lake in Alaska. With a depth of 152.9 km, this is considered a deep earthquake (greater than 70 km), which typically occurs in the lower crust or upper mantle and may result in less surface shaking.

Impact Assessment

There were no felt reports for this earthquake, and no tsunami advisory was issued, as indicated by the data.

What You Should Know

This minor earthquake, with a magnitude of 3.0, is often felt but rarely causes damage. It is possible for aftershocks to occur, and general safety tips include securing heavy items at home and following local emergency guidelines.

Source

Data from USGS: https://earthquake.usgs.gov/earthquakes/eventpage/aka2026iaeeag

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 magnitude 3.0 earthquake occurred 120 km north-northwest of Chignik Lake, Alaska, at a depth of 152.9 km on June 28, 2026, at 5:29 a.m. 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.