There were eighteen (18) located earthquakes during the period under review. These were generally of a shallow depth (0-7km) and were all volcano-tectonic events. Most of the events were concentrated beneath the Soufriere Hills but a few were scattered in the Bethel-Long Ground area.
There were two eruption episodes during the period, one at 07:08 and the other at 10:58. The first event resulted in the creation of a new vent on the north-east flank of Castle Peak dome, close to the Langs Soufriere area. A significant amount of ash was generated and some blocks of rock were thrown in the air and fell some distance from the vent. It was reported by a pilot flying in the vicinity of Montserrat during the period that the ash plume may have reached up to 7000 feet. There were no reported ashfalls from the second event. Several volcano-tectonic events occurred after the first eruption and many of these were felt in the Long Ground area.
The EDM reflector at Tar River which was damaged when the October 11th vent opened, was replaced yesterday afternoon. This allowed measurements to be made at this site today.