M 3.4 Earthquake Hits 22 km South of Petersville, 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 3.4 earthquake occurred 22 km south of Petersville, Alaska, at a depth of 76.6 km on June 28, 2026, at 12:00 PM UTC, with no immediate reports of impacts.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 17, 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 verify its scope, source, and timestamp, then compare related notices without assuming that one record proves a broader trend.
Areazine pairs this record with the original agency URL so you can check the primary source before acting. Its related labels are earthquake, seismic, usgs, Alaska.
What Happened
An earthquake with a magnitude of 3.4 ml struck 22 km south of Petersville, Alaska. The event occurred on June 28, 2026, at 12:00 PM UTC, at a depth of 76.6 km.
Location Details
The earthquake was centered at coordinates 62.298° N latitude and 150.833° W longitude, approximately 22 km south of Petersville in Alaska. At a depth of 76.6 km, this is considered a deep earthquake, which typically occurs in subduction zones and may result in less intense surface shaking compared to shallower events.
Impact Assessment
There have been no reports of the earthquake being felt, and no tsunami advisory has been issued.
What You Should Know
Earthquakes of this magnitude are often felt but rarely cause damage. Aftershocks are possible, so individuals in the area should follow general safety measures, such as securing heavy objects and knowing how to protect themselves during shaking.
Source
This information is from the United States Geological Survey (USGS). For more details, visit: https://earthquake.usgs.gov/earthquakes/eventpage/aka2026hmrwnl
Original source: USGS Official Notice ↗
Related Earthquakes
All Earthquakes →Nationwide notices with similar length or severity timing 8
Two Areazine-derived peer sets for this USGS earthquake report: nearest notices by body length and by same severity near the same agency date. Peers come from other categories so they are not the same-feed Related list above.
Similar body length
Nearest notices by article body length (1,080 characters here).
Similar severity timing
Same severity (low) notices issued closest in time to April 17, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.