M 4.5 Light Earthquake Recorded 59 km SE of Adak, Alaska
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A magnitude 4.5 earthquake occurred southeast of Adak, Alaska, on March 14, 2026. The intermediate-depth event resulted in no tsunami advisories.
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 "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 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 light earthquake with a magnitude of 4.5 ml occurred on March 14, 2026, at 12:31:42 UTC. The seismic event was recorded at a depth of 28.5 km and has been officially reviewed by seismologists.
Location Details
The epicenter was located at coordinates 51.55°N, 175.951°W, approximately 59 km southeast of Adak, Alaska. The depth of 28.5 km is categorized as an intermediate-depth seismic event (20-70km).
Impact Assessment
The earthquake registered a maximum Modified Mercalli Intensity (MMI) of 3.64. There were no felt reports submitted to the USGS for this event at the time of reporting. No tsunami advisory, watch, or warning was issued following the tremor, and no specific alert level color was assigned.
What You Should Know
This event is classified as a "light earthquake." While magnitudes between 4.0 and 4.9 are frequently felt and can cause noticeable shaking, they typically result in little to no damage to infrastructure. Residents in the Aleutian Islands region should remain aware of the possibility of routine aftershocks.
Source
Data and attribution courtesy of the USGS.
Original source: USGS Official Notice ↗
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