Turrialba has actually been erupting now for weeks. One day last week, it averaged 4 eruptions an hour but most were small. The one today was large but luckily, the winds are keeping the ash away from the airport so no problems. They did close the 'other' airport so if your coming in in a Lear Jet, you might have to settle for SJO.
OVSICORI (Volcano folks in CR) have a fantastic page on Facebook with constant updates, videos, pictures, ash fall maps and more. It is a great resource to keep track of volcanoes and earthquakes here.
https://www.facebook.com/OVSICORI/