How strong was the 54 km W of Adak, Alaska earthquake?
The 54 km W of Adak, Alaska earthquake had a magnitude of 4.8 mww, classified as a "Light" earthquake on the magnitude scale. Earthquakes of this magnitude are typically felt by people nearby but rarely cause significant structural damage.
Where exactly did this earthquake occur and how deep was it?
This earthquake struck at coordinates 51.8748N, 177.4302W, at a depth of 86.5 km. Deep earthquakes are generally felt over a wider area but cause less intense shaking at the surface.
Did this earthquake trigger a tsunami warning?
No tsunami warning was issued for this earthquake. Earthquakes below magnitude 6.5 rarely generate dangerous tsunamis, though localized effects are possible in rare cases.
How many people felt this earthquake?
4 people submitted felt reports to the USGS for this earthquake. The Community Decimal Intensity (CDI) reached 3.2, indicating light shaking noticed by some people. The Modified Mercalli Intensity (MMI) was estimated at 2.6.
When did this earthquake happen and how significant was it?
This earthquake occurred on August 5, 2025 at 20:04:08. The USGS assigned it a significance score of 356 out of a possible 3,000, which factors in magnitude, felt reports, and potential impact. This is a relatively routine seismic event.