http://modernsurvivalblog.com/natural-disasters/uh-oh-katla-volcano-just-rumbled/On May 17, 2010 08:32 UTC, The Iceland Met office indicates that a small earthquake has occurred at the Katla location. In what could be an early indication of the event that is expected to occur (an eruption of Katla), a small earthquake is reported at the site. Although a single earthquake is not a precursor of an eminent eruption, it could be the first ’sigh’ of the awakening powerful giant.
More to the story at the link.