Montserrat Volcano Observatory

Daily Report
Report for the period 4 pm 1 June
to 4 pm 2 June 1997
The current alert level is ORANGE

The volcanic activity has remained at about the same level as the last few days, with small pyroclastic flows from the north and north-east of the dome. Pyroclastic flows have travelled further down the Tuitt's Ghaut, and they now reach 1 km from the dome.

The seismic activity has been at a generally low level, with no hybrid or volcano-tectonic earthquakes recorded. There were 6 small long-period earthquakes, three of which triggered rockfalls from the dome, and a total of 138 rockfall signals. The rockfall activity was at a higher level until 8 pm last night, and again this morning between 7:30 am and 12 pm.

The viewing conditions were not good today, and the top of the dome could not be seen. A helicopter inspection flight was made at 1 pm, and fresh pyroclastic flow deposits were seen in Tuitt's Ghaut. These reached to 1 km from the crater rim, and were probably formed during this morning's pyroclastic flow activity. The deposits in the upper reaches of the ghaut were also noticeably thicker. Vigorous steaming was observed from the dome above Tuitt's Ghaut, and further rockfalls were heard in this area this afternoon.

COSPEC runs were made today along the south coast road. The results will be processed soon.

The dome is still growing, and so large pyroclastic flows in the Tar River and White River valley are possible with little warning. The area around Tuitt's Ghaut is becoming increasingly dangerous, and larger pyroclastic flows to the north are likely in the next few days. These could travel as far as the road at the bottom of Harris. People should stay away from this area. The central corridor road should not be used as a route to the airport.

Montserrat Volcano Observatory