Montserrat Volcano Observatory


Morning Report
Report for the period 4 pm 24 August
to 7 am 25 August 1997


Activity at the volcano continues to be at a reduced level. Activity overnight was quiet with occasional rock falls. The pattern of approximately 12 hourly cycles in activity continued with a period of enhanced rockfall activity beginning about 3.40 am, more or less as expected on the basis of this continuing pattern. One event was large enough seismically to have been a small pyroclastic flow. This activity continues at the time of completing this report. The summit of the volcano remains shrouded in cloud.

Explosions may take place with little or no warning. These may be more intense and longer lasting than those already experienced. If explosions do occur, people should seek shelter under as strong a roof as possible and have a helmet or head protection available. After an explosion small rocks and ash can be expected to fall everywhere on the island. Ash and falling rocks make driving hazardous. Ash is present in the atmosphere and masks should be worn outdoors.

Pyroclastic flows are expected on all flanks of the volcano, and so at no time is it safe to enter the exclusion zone, including the Belham river valley. Access to the exclusion zone is completely restricted. The access to areas south of the Nantes River is now only allowed during the day for essential visits. Everyone should remain vigilant and continue to listen to Radio Montserrat for any announcements.


Montserrat Volcano Observatory