The level of activity overnight at the Soufriere Hills volcano was about the same as that observed during the previous reporting period. It was mainly characterised by the occurrence of small- to moderate-sized rockfalls and small volcano-tectonic earthquakes. Several of the rockfalls were large enough to generate ash clouds which were blown westward on the wind, probably resulting in very light ashfalls in some of the western communities. The VTs were located at shallow depths beneath the crater. Dome growth at the Soufriere Hills volcano is still continuing and these sequences are probably associated with magma migration from shallow depths to the surface.
During the early morning period, the volcano was obscured by low clouds and the dome could not be seen from both Bramble Control Tower and the Observatory.
While the current phase of activity at the Soufriere Hills volcano continues, hazards in some areas of the evacuated zone have increased significantly. In particular, we expect significant-sized pyroclastic flows to occur more frequently in the Tar River Valley area. These will obviously be associated with ash clouds which will be blown on the wind, with areas affected by ashfall being determined by the wind direction and strength at that time. The Tar River Valley and surrounding areas are now extremely hazardous, and should not be entered under any circumstances. If activity continues, there is a risk that flows or ash surges may come over Farrells' Wall and the upper reaches of some of the ghauts closest to the Tar River Valley. People are, therefore, advised not to work these areas. We also urge individuals who continue to ignore this advice to think very seriously before making trips to these highly hazardous zones.