Dome growth has remained concentrated in the south eastern area of the dome complex, although small rockfalls have occurred in other areas. The summit area has evolved through the week, beginning as a large striated lobe and ending as a series of small spines.
Sulphur dioxide emission rates, measured using DOAS spectrometers, ranged from 4.6 to 20 kilograms per second with a mean emission rate around 14 kilograms per second. This corresponds to a daily release of sulphur dioxide around 1200 tonnes.
The daytime entry zone (DTEZ) remains open; weather permitting. Activity could increase quite suddenly, with a dangerous situation developing very quickly. Ash masks should be worn in ashy conditions. The Belham Valley should be avoided during and after heavy rainfall due to the possibility of mudflow activity.
Residents of Montserrat and visitors to the island are advised to tune into ZJB Radio for up-to-date information on the volcano. Access to Plymouth, Bramble airport and beyond is prohibited. There is a maritime exclusion zone around the southern part of the island that extends two miles beyond the coastline from Trant's Bay in the east to Garibaldi Hill on the west coast