Activity at the Soufriere Hills volcano has been at about the same level as yesterday. Seismicity continued to be dominated by small- to moderate- sized rockfall signals. The most significant of these occurred at 01:04 on July 1. It was strong enough to be recorded by all seismic stations, lasted about two minutes, but saturated only the Chances Peak seismograph. Low amplitude broadband tremor resumed at about 9:00 pm last night and remained persistent throughout the rest of the update period Six long period events also occurred.
Visibility was good yesterday. Observations were made from the ground and helicopter during the afternoon of 30 June. It was observed that although rock falls are relatively rare, dome growth continues in a number of areas, most rapidly on the southern flank of the new dome, where considerable new material has been deposited in the upper part of the south fork of the Tar River. Little new material has fallen into the upper part of Fort Ghaut although it has a free path over Gages Wall; this suggests very little rockfall activity in this sector at present. Steam production was concentrated in the western moat.
The Soufriere Hills volcano remains unstable and therefore continues to be hazardous to people and property on both the eastern and upper western flanks. The Tar River, Long Ground and Whites areas to the east and upper Fort Ghaut, Gages Village and Upper Amersham areas to the west are still extremely hazardous. The road between Lee's Estate and Ryner's Village remains closed. People should not enter these areas under any circumstances. If they do, they put themselves and others at direct risk of very serious injury or death. People are also urged to keep visits to the evacuated to an absolute minimum.