Montserrat Volcano Observatory

Daily Report
Report for the period 6 pm 2 December
to 6 pm 3 December 1997

Seismicity has remained at a relatively low level today with mainly rockfall signals being recorded. Visibility has been poor again today and no further observations of the volcano have been made. However, on a helicopter observation flight it was noticed that a lot of material generated by pyroclastic flow and rockfall activity had piled up in the White River Valley.

Between 16:00 yesterday and 16:00 today there were 46 long-period earthquakes, 112rockfall signals, and 16 hybrid earthquakes. Activity appears to be concentrated on the southern side of the volcano, however, past experience has shown that the area of growth on the dome can change very fast and pyroclastic flows could occur down any of the ghauts around the volcano with little or no warning.

Average dust levels over the last 24 hours in St. Johns, St. Peters and Woodlands were low.

Electronic Distance Measurements were made on the Old Towne, Garibaldi Hill and Lees triangle today and the data is being processed.

Nine (9) Senior Scientists who are part of the monitoring program paid a one day visit to the Montserrat Volcano Observatory today after a meeting in Antigua.

Montserrat Volcano Observatory