Government Information Service

The Volcanic Explanation
For The 24 Hour Period Ending 7 AM On Thursday May 22, 1997
A Presentation Of The Government Information Services
In Conjunction With The MVO.

The current alert level is ORANGE

Over the last 24 hours the activity at the Soufriere Hills Volcano has shown little change. There have been over 150 hybrid earthquakes and a number of rockfalls and small pyroclastic flows.

Some brief views of the dome early yesterday showed a new spine on the northern side close to Mosquito Ghaut, the dome itself is now the largest it has ever been at about 63 million cubic metres.

The tiltmeter at Chances Peak is showing movements that are in time with the hybrid earthquake swarms, this illustrates that the volcano swells during the swarms.

A GPS survey was taken yesterday on the eastern side of the volcano, this was to check if there had been any movement of the site at Hermitage. The results showed similar readings to those of March and April.

This morning (Thursday) the dome is covered in low cloud but it is thought that activity continues on the northern side of the volcano. No one should visit Zones A and B on the risk map as they are extremely dangerous. The alert level is ORANGE and everyone should remain vigilant as the volcano is in a very dangerous phase.

Government Information Service