Montserrat Volcano Observatory

Morning Report
Report for the period 4 pm 29 August
to 7 am 30 August 1997

Activity at the volcano continues at a reduced level. The seismic records have been dominated by rockfall and small pyroclastic flow signals. There is a weak pattern of peaks in activity begining roughly every 12-16 hours. There was a period of heightened rockfall activity between 6 pm and 9 pm yesterday evening. This was followed by a period of relative quiescence until around 4 am this morning when rockfall activity began to increase.

Clear conditions last night permitted very good views of the dome. Incandescence was noted over a wide area extending from the area above Gages Wall around to the northern part of dome above Mosquito Ghaut. Currently the summit of the volcano is shrouded in cloud.

Explosions may take place with little or no warning and may be more intense and longer lasting than those which occurred earlier this month. If an explosion does occur, small rocks and ash can be expected to fall everywhere on the island. People should seek shelter under a strong roof and wear a helmet or other head protection. Ash and falling rocks make driving hazardous. Ash will be present in the atmosphere and masks should be worn outdoors.

Pyroclastic flows are expected on all flanks of the volcano, and it is never safe to enter the exclusion zone, including the Belham river valley. Access to the exclusion zone is completely restricted. Access to areas south of the Nantes River is allowed during the day, but only for essential visits. Everyone should remain vigilant and listen to Radio Montserrat.

Montserrat Volcano Observatory