Government Information Service

The Volcanic Explanation
For The 24 Hour Period Ending 7 AM On Monday May 19, 1997
A Presentation Of The Government Information Services
In Conjunction With The MVO.

The current alert level is ORANGE

The level of activity at the Soufriere Hills Volcanohas remained high over the last 24 hours.

There was a swarm of small hybrid earthquakes, a large number of long period events and numerous rockfall signals over the reporting period.

At around 8 pm last night there was a period of dome collapse followed by small pyroclastic flows to the north and northeast. There was also vigorous steam emission again, this seems to happen after every partial collapse of the dome.

During the day yesterday (Sunday) scientists installed a tiltmeter and two accelerometers at the top of Chances peak.

This morning the dome is clear and it is reported from the airport that the tall spine at the top of the dome has collapsed.

The alert level is ORANGE and further pyroclastic flows are expected today (Whit Monday). All Montserratians are asked to keep well clear of Zones A and B as they are very dangerous. Residents can visit Zones C and D only during daylight hours and should have a rapid means of exit.

Government Information Service