According to a news article, activity from Colima increased during 29-30 December. An ash plume was visible on 29 December. On 30 December, incandescent material was propelled from the summit and white and gray plumes rose to altitudes of 4-4.3 km (13,100-14,100 ft) a.s.l. and drifted SE, W, and NW. Authorities recommended that people avoid valleys surrounding the volcano.
Source: Notimex – “Reports provided courtesy of the Smithsonian’s Global Volcanism Program and the US Geological Survey’s Volcano Hazards Program.” Archive image courtesy of the Colima Volcano Observatory.