Montserrat Volcano Observatory


Morning Report
Report for the period 16:00 05 April
to 07:00 06 April 1997
The current alert level is ORANGE


Volcanic activity has remained at a low level overnight. The seismicity has been a mixture of volcano-tectonic earthquakes and small to medium-sized rockfall and pyroclastic flow signals. The majority of these events have been small with the largest VT occurring at 10:11pm. There have been two prolonged periods of low amplitude tremor on the Gages seismometer between 4:00pm and 9:20pm yesterday and 1:00am and 3:30am this morning.

Currently the top of the dome is covered by cloud. The Airport control tower have reported that there has been some activity on the northern face of the dome. Two rockfalls were noted in this area at about 6:30am. Apart from this and some steaming there are no major changes to the eastern side of the dome.

Although the activity is currently low, changes could happen quickly at any time, and further major pyroclastic flows could result. The alert level remains at orange, and so there should be no visits to zones A and B and only limited, short visits to zone C. Daytime occupation only is permitted in zone D. People should listen for further updates of the situation from the MVO. For the time being people are advised to remain vigilant and to always wear an ash mask in dusty conditions. The Tar River and White River valleys are extremely dangerous, and should not be entered at any time.


Montserrat Volcano Observatory