Minor M 3.3 Earthquake Recorded Near The Geysers, California

Source: USGS · Northern California

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A magnitude 3.3 earthquake occurred 8 km northwest of The Geysers, California, on March 16, 2026. The shallow tremor was reported felt by a few residents in the area.

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

This notice was issued by USGS on April 3, 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 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, California) 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 3.3 ml occurred on Monday, March 16, 2026, at 8:00 PM UTC (1:00 PM local time). The seismic event was recorded at a very shallow depth of 1.97 kilometers.

Location Details

The epicenter was located approximately 8 kilometers northwest of The Geysers, California, at coordinates 38.8287°N and 122.8127°W. Because the depth was less than 20 kilometers, this is classified as a shallow earthquake. Shallow quakes are typically more noticeable to those directly above the epicenter than deeper seismic events.

Impact Assessment

According to the U.S. Geological Survey (USGS), there have been 2 "Did You Feel It?" reports from the public, with a Community Decimal Intensity (CDI) of 2.2. There is no tsunami advisory, watch, or warning in effect for this event. No significant damage or injuries are expected from a tremor of this magnitude.

What You Should Know

Earthquakes with magnitudes between 2.5 and 3.9 are classified as minor. While they are often felt by people near the epicenter, they rarely cause damage to buildings or infrastructure. Residents in the region should be aware that minor aftershocks are a routine possibility following seismic activity of this nature.

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 magnitude 3.3 earthquake occurred 8 km northwest of The Geysers, California, on March 16, 2026. The shallow tremor was reported felt by a few residents in the area.
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 Northern California. 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.