M 3.0 Earthquake 20 km NW of Susitna, Alaska
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A magnitude 3.0 ml earthquake occurred 20 km northwest of Susitna, Alaska, at a depth of 58.5 km.
What this USGS earthquake report tells you, and what most readers miss
This notice was issued by USGS on August 19, 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 magnitude 3.0 ml earthquake struck 20 km NW of Susitna, Alaska, on July 18, 2026, at 12:31:59 UTC (timestamp 1787121119063). The event was recorded at coordinates 61.694°N, 150.742°W with a depth of 58.5 km.
Location Details
The earthquake was located 20 km northwest of Susitna, Alaska. Its coordinates are latitude 61.694, longitude -150.742. At 58.5 km depth, this is classified as an intermediate-depth earthquake (20-70 km).
Impact Assessment
The earthquake was felt by 2 people with a maximum reported intensity (CDI) of 1. No tsunami advisory was issued (tsunami flag: 0) and no alert level was assigned.
What You Should Know
This was a minor earthquake (M 2.5-3.9 range), which is often felt but rarely causes damage. Residents in the area should be aware that smaller aftershocks are possible following any seismic event.
Source
Original source: USGS Official Notice ↗
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