Montserrat Volcano Observatory

Morning Report
Report for the period 16:00 7 December
to 07:00 8 December 1996
The current alert level is ORANGE

The intense swarm of VT earthquakes continued overnight. Landslides from the Galway's Wall are still occuring. The revised risk map is in operation and there will continue to be no access into Zone A/B. Access to Zone C/D is restricted and all residents in Zone E are reminded to stay vigilant.

A total of 97 volcano-tectonic earthquakes have been recorded since 4 pm yesterday. The rate of activity is similar to that over the last two days. These events were located at shallow depths beneath the crater. No VT earthquakes have been recorded since 5:30 this morning. This is the longest period without any VT events since the swarm began on 30 November. It may, however, be a temporary respite.

There were 4 rock avalanches from the Galway's Wall which were large enough to trigger the seismic network. There were two small rockfalls from the lava dome.

Visibility is poor this morning and no observations of Galway's Wall or the crater area have yet been made. Helicopter flights will be made when visibility improves.

Montserrat Volcano Observatory