Montserrat Volcano Observatory

Daily Report
Report for the period 16:00 17 November
to 16:00 18 November 1996
The current alert level is ORANGE.

Activity at the volcano has continued at a low level during the past 24 hours, with very few earthquakes recorded.

One volcano-tectonic earthquake and 2 rockfall signals were recorded by the seismic network today. The VT earthquake was located at a depth of about 3 km to the southeast of the crater. The two rock falls were very small. A regional earthquake was recorded just after midday today; its location is as yet unknown.

Observations of the dome were made from the ground today and continued growth was reported despite the general lack of rock fall activity. The main area of growth appears to be on the north side of the summit. The highest point on the new dome is currently at an altitude of 885 metres (2920 ft) above sea level.

EDM measurements on the eastern triangle were carried out today. The line lengths to Castle Peak showed some slight increase since the last measurements 3 days ago, although changes were within the error of the technique. A GPS survey of EASTNET is still going on and the results won't be available until tomorrow.

A series of COSPEC measurements were taken this morning, with the average flux being 363 tonnes per day. This is somewhat higher than readings over the past few days and may indicate that the volcano is losing its gas more easily.

Scientists at MVO remind everyone that the volcano is still in a very dangerous state and all residents should follow the recommendations laid out in the alert procedures and listen to Radio Montserrat. Although activity has been at a low level over the past few days, the scientists are still not sufficiently happy with the state of the volcano to recommend a lowering of the alert level. They are hoping to be able to do so in the morning should activity remain at the current level. The Tar River and Long Ground areas remain especially dangerous and anyone entering these areas is putting themselves at risk of death.

Montserrat Volcano Observatory