BEZYMIANNY– Reports of minimal seismic activity along with gas and steam activity has been observed within the past week. The Tokyo VAAC has also reported a significant ash plume on the 4th of February that rose to 4.6 km in height.
KARYMSKY– Some seismic activity has been reported in recent days, and some ash plumes may have risen to 4.7km in height and drifted approximately 120 km East.
KIZIMEN– High seismic activity from this volcano, but variable within the last week. Ash plumes rose to 6.1 km in height and drifted 430 km East. A second ash plume was reported on the 8th of February that reached a height of 4km.
SHIVELUCH– A moderate amount of seismic activity has been reported recently, with frequent volcanic earthquakes and gas and steam activity has been observed. Ash plumes reported recently rose to heights of around 6 to 8 km and drifted 120km northeast. A second ash plume was noted as rising to 4km in height and drifting Eastward on the 8th of February
Sources: http://www.volcano.si.edu/reports/usgs/
http://www.ssd.noaa.gov/VAAC/OTH/JP/messages.html
James Hupp 2/15/2011
Volcanic Activity Blog 