How strong was the 104 km SSW of Nikolski, Alaska earthquake?
The 104 km SSW of Nikolski, Alaska earthquake had a magnitude of 6 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 52.0985N, 169.5349W, at a depth of 20.0 km. This intermediate depth can still produce significant shaking at the surface.
Did this earthquake trigger a tsunami warning?
Yes, a tsunami advisory or warning was associated with this earthquake. Coastal residents in affected areas should always follow local emergency management guidance during tsunami events. Even small tsunamis can produce dangerous currents.
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 10, 2015 at 19:26:44. The USGS assigned it a significance score of 554 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.