Volcanology
Fierstein's Katmai lecture well attended 
Judy Fierstein of USGS to speak on April 25
Alert Level to Advisory, Aviation Color Code to Yellow
Elevated seismicity continues at Central Aleutians volcano
AVO to host at GI Feb. 16 - 17
Scientists note that Alaska embodies a great deal of change
Ash cloud detaches, drifts away
Event draws more than 21,000 attendees, media
TTCP recap, new collaborations
AVO watches unrest
