Tolbachik MIR data shows thermal signals seen from remote sensing, too cloudy to be seen from webcam, May 9 2013.

MIR data from 17:42 UTC on May 9, 2013 shows strong thermal signals from Tolbachik volcano. 

40 x 40 region zoomed in around the volcano

Lack of anything seen in webcam at 17:40 UTC. Shows usefulness of remote sensing for operational monitoring and understand the volcanic hazard.