Montserrat Volcano Observatory


Morning Report
Report for the period 4 pm 21 August
to 7 am 22 August 1997


Activity at the volcano has reduced. The period has been characterised by rockfalls. This activity was most prominent during the afternoon and through evening to about 11 pm with several large rockfalls and small pyroclastic flows. Activity quietened thereafter with minor rockfalls. The cyclic pattern of earthquake swarms appears to have stopped. A large unstable mass of lava currently is placed above the Gages Valley.

Further 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 areas south of the Nantes River have been evacuated over night. Everyone should remain vigilant and continue to listen to Radio Montserrat for any announcements.


Montserrat Volcano Observatory