M 3.8 Earthquake Occurs 55 km West of Petrolia, California
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 3.8 earthquake struck 55 km west of Petrolia, California, at a shallow depth of about 7.4 km on June 15, 2056, at 12:25:08 UTC.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 25, 2026 and geographically references Northern California. 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, California.
What Happened
A magnitude 3.83 ml earthquake occurred on June 15, 2056, at 12:25:08 UTC. The event took place 55 km west of Petrolia, California, at a depth of 7.43 km.
Location Details
The earthquake was centered at coordinates 40.35 latitude and -124.93 longitude, specifically 55 km west of Petrolia in California. With a depth of 7.43 km, this is considered a shallow earthquake, which means it occurs in the upper crust and may be more likely to be felt at the surface compared to deeper events.
Impact Assessment
No felt reports were available for this event. There was no tsunami advisory issued, and no alert level was specified.
What You Should Know
This minor earthquake, with a magnitude of 3.83, is often felt but rarely causes damage. Aftershocks are possible following such events, though specifics cannot be predicted. For safety, if shaking is felt, individuals should drop to the ground, cover under a sturdy object, and hold on until the shaking stops.
Source
This information is from the United States Geological Survey (USGS). For more details, visit: USGS Event Page
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 (1,165 characters here).
Similar severity timing
Same severity (low) notices issued closest in time to April 25, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.