At 3:26 local time on 30 May, 2005, another strong explosion- the largest one being registered during the past 20 years,- was reported from Colima volcano. The eruption clumn reached an height of 8500 m a.s.l. and the ash plume was carried by winds towards SE and NE (at lower altitudes). Approx. 2 hours after the explosion the plume had reached a length of more than 100km. Pyroclastic flows descended the volcano's W flank.