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The Volcanic Explanation
For The 24 Hour Period Ending 7 AM On Thursday April 10, 1997
A Presentation Of The Government Information Services
In Conjunction With The MVO.

The current alert level is ORANGE

The activity at the Soufriere Hills Volcano has continued to be low over the last 24 hours. However there was some moderate pyroclastic flow activity from the south of the dome, and in addition some rockfall activity from the dome.

The seismic network recorded just two earthquake events over the reporting period, one was a volcano-tectonic earthquake and the other was a teleseismic event from a distant earthquake. There was also a short period of low amplitude tremor on the Gages seismometer late last night (Weds).

The recent COSPEC measurements taken to check the gas levels in the atmosphere produced results of around 225 tonnes per day of sulphur dioxide flux, this is a very low level.

Clear visibility yesterday allowed helicopter flights over the Galway's Wall - it was observed that some of the cracks in this area appear to be getting wider and there were signs of fresh landslides over the wall.

A GPS survey was carried out yesterday at various sites around the volcano, the results are currently being processed.

The alert level is AMBER and this means that Zones A and B continue as "no go" areas, Zone C can be visited during daylight hours only for residents with a rapid means of exit and Zones D, E, F, and G can be lived in as normal. However, residents are asked to remain vigilant at all times as the dome is now larger than it has ever been before (approx 50 million cubic metres).

Ash masks should be worn in all ashy areas.

Government Information Service