4 'bands' of Drs>10 cm^2:

• Band 1: vigorous vent clearing phase began 1940 (see figure below) until 1952, then less vigorous until 2020 when band stops.
• Band 2: 2118-2350 sustained high amplitude tremor
• Band 3: 0140-0250 high amplitude tremor
• Band 4: 0750-0855 high amplitude tremor

Strong tremor had been increasing for several hours, but at 1940 an abrupt increase occured, possibly marking the onset of a vent clearing eruption.

Rapid increase began around 0445, peaking between 0545 & 0715, petering out after 0745. Two further strong pulses centred on 0845 & 1000 occured each lasting for about 1 hour.