Montserrat Volcano Observatory

Morning Report
Report for the period 16:00 07 May
to 07:00 08 May 1997
The current alert level is AMBER

The nature of volcanic activity has changed slightly overnight, with a swarm of small volcano-tectonic earthquakes. The data from this swarm has not been processed, but a quick look at the data suggests that the earthquakes are located beneath the crater at a depth of about 3 km. Swarms of earthquakes like this have been rare in recent months.

The rockfall and long-period earthquake activity has continued as usual overnight, at about the same level as in the last few days.

The volcano is cloudy this morning, and there has been some rain. So far, there have been no mudflow signals detected by the seismic network.

Whilst dome growth continues at the Soufriere Hills volcano, it remains dangerous. Pyroclastic flows and associated surges could occur at any time and without warning in the Tar River or White River valleys, and people should stay well away from these areas. Rapid changes in the style of activity and areas affected are possible. Visitors to Zone C should thus stay alert and are reminded to stay well clear of ghauts in the event of heavy rain.

Montserrat Volcano Observatory