The period under review started with the continuation of the episode of very low seismic activity that began on the evening of 6 February. An episode of very low amplitude broad band tremor was then observed between 18:00 and 19:00 on 8 February on the seismometer at Gages, but then the record returned to little or no noticeable seismic activity. In the early hours of 9 February about 01:00, intermittent episodes of low amplitude broad band tremor commenced. This trend continued until approximately 06:30 when there was a slight increase in amplitude. This remained the situation until 09:00 when the record reverted back to intermittent episodes of lower amplitude tremor which finally disappearing by 13:00 on 9 February. Very small long-period earthquakes (magnitude less than 1), have been recorded only by the nearest seismometer station (Gages) every 10 to 20 minutes in the last few hours of the period under review. Approximately 20 other seismic signals, of the type that can often be associated with rockfall or small explosions were also observed. A small regional earthquake 60 km southeast of Montserrat was recorded on the seismic network on 9 February at 05:27 and had a magnitude about 3.3.
EDM measurements were carried out on the White's-Castle Peak-Long Ground triangle today. No changes have occurred in the line lengths on these triangle since the previous occupation on 5 February. Low cloud cover over the volcano prevented any angular measurements of the dome.
Brief views of the volcano were obtained by helicopter early today and from Chances Peak during the early afternoon. The northern and southern parts of the dome were visible from the air. These areas remain essentially unchanged since the previous observation flight made three days ago. Dome growth at these areas appears to have slowed down considerably during the past week. Brief views of the western and southern parts of the dome were obtained from Chances Peak this afternoon. Several rockfalls were seen and heard from the western part of the dome, which appears to be the most active area of dome growth. Vigorous venting of steam and other magmatic gases were observed from several parts of the dome and very strong local winds were evident. These winds blow from the south-east and have been partly responsible for the persistent light blue haze in the Gages valley during the past week.