How strong was the 84 km W of Adak, Alaska earthquake?
The 84 km W of Adak, Alaska earthquake had a magnitude of 6.2 mww, classified as a "Strong" earthquake on the magnitude scale. Earthquakes of this size can cause serious damage to buildings and infrastructure over a wide area.
Where exactly did this earthquake occur and how deep was it?
This earthquake struck at coordinates 51.9836N, 177.8550W, at a depth of 10.0 km. Shallow earthquakes (under 20 km) tend to cause more surface damage than deeper events.
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?
9 people submitted felt reports to the USGS for this earthquake. The Community Decimal Intensity (CDI) reached 4.1, indicating moderate shaking felt by most people indoors. The Modified Mercalli Intensity (MMI) was estimated at 6.4.
When did this earthquake happen and how significant was it?
This earthquake occurred on January 23, 2020 at 14:53:02. The USGS assigned it a significance score of 595 out of a possible 3,000, which factors in magnitude, felt reports, and potential impact. This is a moderately significant seismic event. The PAGER alert level was "green", indicating the estimated level of response needed.