Government Information Service

The Volcanic Explanation
For The 24 Hour Period Ending 7 AM On Tuesday February 11, 1997
A Presentation Of The Government Information Services
In Conjunction With The MVO.

The current alert level is ORANGE

Activity at the Soufriere Hills Volcano remains at a low level once again. Over the last 24 hours there were two volcano-tectonic earthquake swarms followed by hybrid earthquakes and rockfalls.

There were over 100 volcano - tectonic earthquakes recorded and about 50 rockfall signals in the last 24 hours.

There has been continuous ash venting from the area where Castle Peak used to be and in addition small pyroclastic flows also produced some ash.

A helicopter flight yesterday showed that new rockfall deposits from the pre September dome are present in the upper reaches of the White River Valley. The deposits have reached within 50 metres of Galways Soufriere.

This morning (Tuesday) the crater is hidden by cloud but scientists feel that the eastern side of the dome is very unstable and likely to collapse at any time. This will cause pyroclastic flows and ash clouds. Residents are being warned to have their dust masks with them at all times.

The alert level remains at ORANGE and residents are being urged to keep clear of Long Ground, Tar River and Upper Galways as they are extremely dangerous.

Government Information Service