Yesterday (23-June-2014) at 20:53 UTC a magnitude 7,9 earthquake [EMSC information here] took place in Rat Islands, Aleutan Islands. This earthquake had the depth of 100 km, no damage has been reported following this earthquake and aftershocks. The reason for that is this area has almost no population at all. The biggest risk was from local tsunamis, they where detected but I don’t think any damage took place from them.
After the main earthquake took place a heavy aftershock activity took place. With strongest aftershock having the magnitude of Mb6,0 (EMSC information here) and Mw6,6 (EMSC information here). Many magnitude 5,0+ earthquakes took place following the main earthquake.
Here is how the magnitude 7,9 earthquake did appear on my geophone in Denmark. Its frequency has been extended by software to show the earthquake clearly. This image is under Creative Commons Licence, please see CC Licence page for more details.
There is a risk of more aftershocks in this area for the next few days to months. There is little risk of damage due to this area low population density. It is unclear if the magnitude 7,9 earthquake is going to have any effect on volcanoes in this area. As stated yesterday by Alaska Volcano Observatory on it’s Facebook site.