M 4.0 Earthquake Strikes 20 km SSW of Tonopah, Nevada
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 3.98 earthquake occurred 20 km south-southwest of Tonopah, Nevada, at a depth of approximately 16 km on June 28, 2026, at 12:30 AM UTC.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 22, 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 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, Nevada.
Earthquake Report
What Happened
An earthquake with a magnitude of 3.98 ml struck 20 km SSW of Tonopah, Nevada. The event occurred on June 28, 2026, at 12:30 AM UTC, at a depth of 15.98 km.
Location Details
The earthquake's epicenter was at coordinates 37.8946° N, 117.2998° W, approximately 20 km south-southwest of Tonopah, Nevada. With a depth of 15.98 km, this is considered a shallow earthquake, typically occurring in the Earth's crust near the surface and potentially more noticeable in nearby areas.
Impact Assessment
There are no felt reports available for this earthquake, and no tsunami advisory has been issued.
What You Should Know
This minor earthquake, with a magnitude around 4.0, may have been felt locally but is unlikely to cause damage. It is possible for aftershocks to occur, so residents should be aware of basic safety tips such as securing heavy items and knowing how to drop, cover, and hold on during shaking.
Source
Information from 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 (1,062 characters here).
Similar severity timing
Same severity (low) notices issued closest in time to April 22, 2026.
Frequently Asked Questions
Common questions about this USGS earthquake report.