Montserrat Volcano Observatory

Morning Update
Report for the period 16:00 06 October
to 07:00 07 October 1996

Seismic activity at the volcano was at a low level overnight. More than 13 rockfalls were recorded and these remain the only type of seismic signal obtained from the volcano during the recording period. The signals continue to be quite small and are only recorded by seismic stations located on the flank of the volcano. A single regional earthquake was recorded at about 18:19 last night.

The volcano is very cloudy this morning, and no views of the crater have been obtained during the late evening or early morning.

MVO scientists expect more rockfalls will occur as the October 1 dome increases in size. Further pyroclastic flows are possible. All indications are that the rockfalls and pyroclastic flows will be confined to the Tar River valley area but ashfalls may affect other areas. Dust masks should be worn at all times in ashy environments.

Despite the current low level of seismic activity, the volcano is still highly dangerous and the activity could change at any time. Individuals put themselves in extreme danger if they venture beyond Long Ground into the Tar River valley. All individuals passing checkpoints in whatever part of the island are reminded that they are entering areas which may become unsafe very quickly, and everyone should be on maximum alert in all of these areas. All residents of southern Montserrat are asked to ensure that they become familiar with the new alert system and evacuation procedures which would be published during this week.

Montserrat Volcano Observatory