How strong was the 170 km E of Atka, Alaska earthquake?
The 170 km E of Atka, Alaska earthquake had a magnitude of 6.9 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 52.1710N, 171.7080W, at a depth of 32.0 km. This intermediate depth can still produce significant shaking at the surface.
Did this earthquake trigger a tsunami warning?
No tsunami warning was issued for this earthquake. While the magnitude was significant, the location and depth characteristics did not warrant a tsunami advisory.
How many people felt this earthquake?
No felt reports were submitted to the USGS for this earthquake. This may indicate the earthquake occurred in a remote area with few nearby residents, or the shaking was too minor to be widely noticed.
When did this earthquake happen and how significant was it?
This earthquake occurred on September 2, 2011 at 19:55:53. The USGS assigned it a significance score of 732 out of a possible 3,000, which factors in magnitude, felt reports, and potential impact. This is a moderately significant seismic event.