Volcanic activity at the Soufriere Hills volcano has remained at a moderate to high level overnight, dominated by rock falls signals and repetitive hybrid events. The largest rock falls of the period since 16:00 on 1 June were at 22:20 on 1 June and 00:56 and 06:45 on 2 June; the earliest one was of a size commonly associated with small pyroclastic flows down the Tar River valley.
Hybrid events continue to occur at a rate of one every 1.5 to 2 minutes, although their amplitudes are rather variable.
The regional event at 20:25 on 31 May and reported yesterday morning had a confirmed magnitude of 4.0 and occurred at a depth of about 14 km, 110 km east of Montserrat. A teleseismic wave was recorded by the seismic network last night at 22:56; these waves are related to large earthquakes occurring far from Montserrat but with sufficient energy to travel great distances around the world.
The volcano was covered by low cloud cover early this morning with steam emission helping to obscure clear views of the summit. Several small ash plumes associated with rock fall signals have been seen drifting over the Upper Amersham area overnight.
The MVO still views the situation at the Soufriere Hills Volcano with grave concern and the scientists continue to urge that visits to the evacuated zone be kept to a minimum. The Tar River, Long Ground and Whites areas are extremely dangerous, and should not be entered under any circumstances.