M 3.1 Earthquake Recorded 25 km SSW of Alamo, Nevada

Source: USGS · Nevada

According to the U.S. Census Bureau's American Community Survey (ACS) 5-year estimates, the CDC PLACES population-level health analysis, and the CMS Hospital Compare quality data, Areazine publishes editorial articles drawing on more than 19,000 U.S. city profiles. See our methodology for full source attribution and refresh cadence.

A minor magnitude 3.1 earthquake occurred early Sunday morning near Alamo, Nevada, at a shallow depth of 6.7 kilometers.

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

This notice was issued by USGS on February 23, 2026 and geographically references Nevada. 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, Nevada) 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 was recorded 25 km SSW of Alamo, Nevada. The seismic event occurred at 06:42:25 UTC on February 22, 2026 (10:42 PM local time on February 21). The earthquake was measured at a magnitude of 3.07.

Location Details

The epicenter was located at coordinates 37.1449°N and 115.2354°W, approximately 25 kilometers south-southwest of Alamo. The earthquake occurred at a depth of 6.669 km. This is classified as a shallow earthquake; shallow events (those less than 20 km deep) are typically felt more distinctly than deeper ones, though their impact area is often more localized.

Impact Assessment

At this time, there are no felt reports submitted to the USGS for this event. There is no tsunami advisory, watch, or threat associated with this inland earthquake. No specific alert level has been assigned to this routine seismic activity.

What You Should Know

Earthquakes with magnitudes between 2.5 and 3.9 are classified as minor. While these events are often felt by people near the epicenter, they rarely cause structural damage. Residents in the region should be aware that minor aftershocks are a common occurrence following seismic activity of this nature.

Source

Data 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 magnitude 3.1 earthquake occurred early Sunday morning near Alamo, Nevada, at a shallow depth of 6.7 kilometers.
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 Nevada. 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.