Government Information Service

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

The current alert level is ORANGE

In the latter part of the last 24 hours the activity at the Soufriere Hills Volcano has increased slightly. There have been a number of moderate rockfall signals overnight and the largest was just before midnight when a pyroclastic flow was recorded for nearly 12 minutes. This went over the Galways Wall and down the White River Valley.

Two regional earthquakes were recorded overnight in the early hours of this morning, the exact positions have not been determined as yet.

Yesterday (Monday) the visibility was excellent and several observations were made of the dome. The curved upper surface of the recent extrusion has now broken up and the summit region is now dominated by a curved face to the north of the extrusion.

The maximum height of the extrusion on the dome is now 1000 metres or 3280 feet which is the highest it has ever been. More material is being extruded to the west of the new dome so that the moat between the pre September scar and the Easter scar is now filling up.

Yesterday there was ash and steam venting for most of the day from the summit area.

The alert level remains at ORANGE and everyone is asked to remain vigilant and stay tuned to ZJB Radio.

Government Information Service