M 3.7 Earthquake Strikes 46 km North of Red Dog Mine, Alaska
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A minor 3.7 magnitude earthquake occurred north of Red Dog Mine, Alaska, on February 18, 2026. The seismic event was recorded at a depth of 22.3 km with no tsunami threat.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on April 6, 2026 and geographically references Alaska. 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, Alaska.
What Happened
A minor earthquake with a magnitude of 3.7 ml occurred on February 18, 2026, at 11:28:44 UTC. The seismic event was centered approximately 46 km north of Red Dog Mine, Alaska.
Location Details
The earthquake's epicenter was located at coordinates 68.456°N and 162.707°W. The event originated at a depth of 22.3 km. According to geological standards, a depth between 20 km and 70 km is classified as an intermediate-depth earthquake.
Impact Assessment
Based on data from the U.S. Geological Survey (USGS), there were no immediate reports of the earthquake being felt by the public. There is no tsunami advisory, watch, or warning in effect following this event. The Modified Mercalli Intensity (MMI) was recorded at 2.785, which indicates very weak shaking that is typically not felt except by a few people under especially favorable conditions.
What You Should Know
Earthquakes with magnitudes between 2.5 and 3.9 are classified as "minor." While these events are frequently recorded by seismographs, they are only occasionally felt and rarely cause any structural damage. Residents in seismic zones are encouraged to remain prepared, though significant aftershocks are less common for events of this magnitude.
Source
Information provided by the USGS Earthquake Hazards Program.
Original source: USGS Official Notice ↗
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