Dome growth continued to focus on the east and north-eastern sector of the dome complex and rockfalls and small pyroclastic flows have continued spalling off the active lobe affecting the north-eastern flanks of the dome. An observation flight on 24 October showed that the gap between the talus slope on the north eastern sector of the crater rim above White's Ghaut has been almost completely in-filled allowing rockfalls and pyroclastic flows to spill over down the northern flanks of the volcano. A series of small stubby spine like structures were also observed on the south eastern summit region of the dome.
Seismicity remained dominated by rockfall activity. The seismic network recorded 732 rock fall signals, 169 long-period rockfall signals, 88 long period earthquakes, 2 hybrid earthquakes and 2 volcano-tectonic earthquakes.
Winds to the north and northeast during the first four days of the reporting period carried the volcanic plume out of range of the MVO monitoring network and meant that sulphur dioxide (SO2) flux measurements were not possible. Subsequently the flux rate varied between 335 and 376 tones per day, with an average of 356 tones per day.