Government Information Service

The Volcanic Explanation
For The 24 Hour Period Ending 7 AM On Friday May 16, 1997
A Presentation Of The Government Information Services
In Conjunction With The MVO.

The current alert level is AMBER

Late yesterday evening there was another moderate pyroclastic flow into the Tar River Valley, this was the biggest in this area since January 20th. This was the major activity in the reporting period.

Earlier there had been around 50 rockfalls and over 40 hybrid earthquakes which were quite small. In addition to the large pyroclastic flow last night there were a number of smaller ones throughout the day in both the Tar River and White River Valleys.

Some brief views of the volcano were possible on Thursday and it was possible to see the eastern and northern parts of the dome. The dome has obviously grown, and there were some intense steam plumes observed. The eastern peak of the dome also appears much steeper.

Attempts were made in the reporting period to set up a new EDM triangle in the Farrels region the operation will continue today (Friday).

It is obvious from this week's activiy that the volcano remains very dangerous and everyone should keep well clear of Zone A on the risk map.

Government Information Service