M 4.7 Light Earthquake Strikes Near 28 de Noviembre, Argentina
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 shallow 4.7 magnitude earthquake was recorded 27 km northeast of 28 de Noviembre, Argentina, on February 11, 2026.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on February 11, 2026 and geographically references Argentina. Its severity classification of "medium" 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, Argentina) 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 light earthquake with a magnitude of 4.7 mb occurred on February 11, 2026, at 08:16 UTC. The seismic event was centered approximately 27 km northeast of 28 de Noviembre, Argentina. The earthquake has been reviewed by seismologists at the USGS.
Location Details
The earthquake was recorded at coordinates 51.4357°S and 71.8959°W. The event originated at a depth of 11.5 kilometers. This is classified as a shallow earthquake; shallow quakes (those occurring at depths less than 20 km) are typically felt more strongly than deeper events because the seismic energy is released closer to the surface.
Impact Assessment
At the time of this report, there has been 1 confirmed felt report submitted to the USGS regarding this event. No tsunami advisory, watch, or warning has been issued. There was no specific PAGER alert level color assigned to this event in the source data.
What You Should Know
Earthquakes with magnitudes between 4.0 and 4.9 are classified as "light." While they are frequently felt and can cause noticeable shaking, they typically result in little to no structural damage. Residents in the region should remain aware of the possibility of aftershocks, which are smaller seismic events that follow a larger earthquake. In the event of further shaking, safety experts recommend that you drop, cover, and hold on.
Source
Information and data provided by the USGS Earthquake Hazards Program.
Original source: USGS Official Notice ↗
Related Earthquakes
All Earthquakes →Frequently Asked Questions
Common questions about this USGS earthquake report.
What is this USGS earthquake report about? ▾
Which agency issued this alert? ▾
How severe is this alert? ▾
What area is affected? ▾
Where can I find more Earthquakes updates? ▾
Primary source data
EPA Outdoor Air Quality Data
Federal monitoring network — every measurement we report
AirNow (EPA / NOAA)
Real-time AQI for every monitored U.S. location
National Weather Service
Active watches, warnings, and advisories — NOAA
CDC Air Quality & Health
Health-impact reference behind every AQI category