Montserrat Volcano Observatory

Daily Report
Report for the period 5 p.m. 27 January 1999
to 5 p.m. 28 January 1999

The level of activity was low during the reporting period. There were 23 rockfalls, 7 volcano-tectonic earthquakes and 1 hybrid earthquake.

A number of new EDM sites were established today to the east of the volcano. Surveying of this network will enable scientists to monitor more closely the continued deformation in this area.

Clear views of the dome yesterday showed that much of the steam and gas venting is currently taking place from fumaroles in the scar on the eastern side of the dome. There is also an active steam vent in the scar above the Gages valley. The gully that cuts through the dome from the Tar River side to Gages valley has very steep sides which are vertical to overhanging in places. Fresh scarring along the sides of the gully shows that much rockfall activity has occurred in recent weeks. The dome is still unstable and a dome collapse could occur without warning, the areas most likely to be affected by such activity are the Tar River Valley and the Gages Valley/Fort Ghaut area.

Residents of Montserrat are advised to keep listening to ZJB Radio Montserrat for information in case of any changes in the state of the volcano.

Montserrat Volcano Observatory