Montserrat Volcano Observatory

Morning Report
Report for the period 16:00 17 December
to 07:00 18 December 1996
The current alert level is ORANGE

The volcanic activity has decreased in level during the night. During late yesterday afternoon, there was a period of near-continuous rockfall signals, caused by the collapse of the December 11 dome. The number of rockfalls has decreased overnight, and since 11 pm the rockfall activity has been at a low level.

The dome area is cloudy this morning, and an inspection of the new dome and Galway's Wall will be made as soon as the conditions improve.

The dangers from the volcano are still extremely high. The deformation of Galway's Wall has slowed in recent days, but the wall remains very unstable and could collapse at any time. Such a collapse might have very serious consequences for areas in zones A/B. Pyroclastic flows to the east will become more likely as the new dome grows. The revised risk map is still in operation. Nobody should be in zone A/B. Visits to zone C/D must be kept to a minimum. Zone E remains safe at this time.

The siren system will be tested between 3 pm and 6 pm today.

Montserrat Volcano Observatory