Montserrat Volcano Observatory


Morning Update
Report for the period 16:00 25 September
to 07:00 26 September 1996


Activity at the Soufriere Hills volcano has continued at a relatively low level overnight. Several small rockfalls were recorded by seismic stations located on the flank of the volcano; few were large enough to produce a signal at stations further away. There has been a marked increased in hybrid activity overnight; the events are currently single discrete signals which are recorded by most stations in the network. Low amplitude broadband tremor of variable duration was present on the Gages seismometer for much of the reporting period.

Low cloud cover over the summit of the volcano has prevented any clear views during the early morning.

MVO scientist expect that rockfalls will continue to occur during the next few days as the dome stabilises. All indications are that the continued relative quiescence of the volcano is unlikely to last very long, and visitors to the unsafe zone are reminded to carry a transistor radio and have a rapid means of evacuation should the situation at the volcano change suddenly. Dust masks should be worn at all times in ashy environments, which may persist for some time as ash dries out and blows around. Drivers should exercise caution and consideration for other road users, especially when driving through areas still affected by ash or gravel.


Montserrat Volcano Observatory