Government Information Service

The Volcanic Explanation
For The 24 Hour Period Ending 7 AM On Monday January 20, 1997
A Presentation Of The Government Information Services
In Conjunction With The MVO.

Over the last 24 hours the activity at the Soufriere Hills Volcano has dropped a little with over 40 rockfall signals being recorded. The main activity however has been swarms of volcano - tectonic earthquakes (VT's) at low levels below the crater. VT's usually signify that magma is trying to reach the surface from shallow depths.

Other seismic signals over the past 24 hours have included a number of hybrid and long period earthquakes.

There has been cloud cover for most of the past 24 hours but brief views were possible yesterday (Sunday), during this time it was noticed that the shape of the dome has changed once again.

There has been dome growth of the Oct 1st dome (dome # 2) since the pyroclastic flows of last week, it was also noticed that the north and north eastern sides are very active.

Scientists are warning of possible further pyroclastic flows down the Tar River valley and are warning everyone to keep clear of this area because of the dangers involved.

Over the weekend there were several arrivals in Montserrat for the MVO, these included Dr John Shepherd, Dr Maggie Mangan and Mr John Power with several others leaving.

The alert level remains at ORANGE and the W.H. Bramble Airport remains open.

Government Information Service