Here is a beautiful Landsat 8 RGB composite of Mount Etna smoking, 3rd December 2015. The full eruption happened later in the day and I suppose the cloud would have covered anyway. Unfortunately Landsat 8's thermal bands malfunctioned back in November so we can't get a thermal comparison from this image. There are also quite a few algal blooms around Sicily at present.
Just look at the colours in this image, what a beautiful planet.