Government Information Service

The Volcanic Explanation
For The 24 Hour Period Ending 7 AM On Wednesday March 12, 1997
A Presentation Of The Government Information Services
In Conjunction With The MVO.

The current alert level is AMBER

The incresed seismic activity continued over the last 24 hours at the Soufriere Hills Volcano. There were further earthquake swarms, the last finishing late yesterday afternoon (Tuesday). Some of the volcano-tectonic earthquakes which were part of these swarms produced rockfalls.

The continued rockfalls over the last few days show that the dome continues to grow and it is now the largest it has ever been and is large and unstable.

Visibility has not been too good over the last 24 hours so no clear views of the dome have been obtained. However, numerous ash clouds have been seen over the reporting period and these seem to be coming from the eastern and southern sides of the dome.

Yesterday the largest rockfall seen to date over the Galways Wall was recorded by the TV camera based in Galways and in addition pyroclastic flows were seen to be coming from the northern part of the dome.

It is obvious to all that the dome is getting more unstable and that further collapses are imminent. Montserratians are being asked to remain vigilent and listen at all time to ZJB for updates.

Government Information Service