If you live in the eastern time zone, odds are you're battening down the hatches in advance of Hurricane Irene, a Category 2 monster threatening much of the eastern seaboard. Coastal communities are under mandatory evacuation orders in several states. This NASA Goddard image from Friday morning makes it clear this storm is no joke.
It’s no Eyjafjallajokull (neither when measured by impact of eruption, nor in difficulty of pronunciation), but Iceland’s Grimsvötn volcano is still establishing a visual presence over the North Atlantic. You can even see it from space. The animation below shows Grimsvötn’s plume piercing the cloud layer above Iceland and spreading its ash plume in the atmosphere above it.