Hello Mary - Looks like a normal and unremarkable steam plume to me. Shows up better in certain atmospheric conditions! Thanks, Cheryl -------- mary williamson wrote: Volcano blog i read has said there is a slight plume at Redoubt. i think it's just temperature. What do You think? Best!motsfo -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050