Montserrat Volcano Observatory


Morning Report
Report for the period 16:00 20 April
to 07:00 21 April 1997
The current alert level is ORANGE


The volcanic activity has been at a low level during this reporting period. There have been only a few small to moderate-sized rockfall and pyroclastic flow signals. The largest of these events overnight was at 7:25 p.m. yesterday and, as a result, there was very light ash fall to the north of the volcano. These signals are the results of material falling from the active area of the dome above the Galway's Wall and flowing into the White River valley. There have also been a small number of long-period earthquakes.

Currently there is low cloud clinging to the summit of the volcano, but intermittent good views of the dome complex may be possible later in the day.

Despite the apparent low level of activity, the volcano remains in an unstable state, with further dome growth in the southern region above the Galway's Wall. A collapse of the dome could occur at any time. Residents of Montserrat should remain alert, and listen to Radio Montserrat for further updates. Ash masks should be worn in ashy environments. Visits to zone C should be restricted to those that are essential. All of Zone A, which includes Long Ground and St Patrick's, is very dangerous and should not be entered under any circumstances.


Montserrat Volcano Observatory