In this photo taken on Saturday, May 21, 2011, smoke plumes from the Grimsvotn volcano, which began erupting Saturday for the first time since 2004. (Jon Gustafsson/AP)

Scientists say Sunday’s volcano in Grimsvotn, Iceland is unlikely to spread ash as far as the volcano that stranded 10 million passengers last year, but travelers will still face headaches.

The Post’s T.J. Ortenzi tells the story through video, time-lapse photos, and tweets: