There have been 21 long-period earthquakes during the period under review. Several large rockfalls in the crater area have also been recorded. The Gages seismic station has experienced continuous tremor since 0400 this morning, at a moderate amplitude. This tremor is probably due to an increase in fluid movement within the volcano. A earthquake at 0840 this morning about 120 km (75 miles) north of Montserrat was recorded by the network. The earthquake had a magnitude of 4.8, and was felt in the U.S. Virgin Islands.
EDM measurements were carried out this morning on the eastern triangle between White's, Long Ground and Castle Peak. There was no change in the distances since the triangle was last measured yesterday.
During a helicopter observation flight this morning, good views of the crater area were obtained. At the moment, dome growth appears to be concentrated in the western part of the crater, close to the Gages Wall, and the dome continues to steam vigorously. During an afternoon visit to the Farrells view point, scientists observed several rockfalls.