Montserrat Volcano Observatory

Morning Report
Report for the period 16:00 31 July
to 07:00 01 August 1996

Activity at the Soufriere Hills volcano overnight was considerably lower in level compared to that observed during the past several days. It was dominated by small- to moderate-sized rockfalls from the flanks of the growing lava dome. Several small VTs, long-period and hybrid earthquakes were also recorded. Intermittent low-amplitude broadband tremor was recorded at the seismic stations closest to the crater area and may be due to increased steam emission from the crater. A slightly larger amplitude broadband signal recorded only by the Gages seismic station early this morning for about 20 minutes is typical of those associated with flash flooding in Fort Ghaut.

Visibility during the early morning period remained very poor because of the low cloud cover.

The ashfall yesterday and the rains overnight will again make driving hazardous so people are reminded to be very careful. Please also remember to wear dust masks while cleaning ash in the home or outside.

While the current phase of activity at the Soufriere Hills volcano continues, hazards in some areas of the evacuated zone have increased significantly. The Tar River Valley and surrounding areas are now extremely hazardous, and should not be entered under any circumstances. If activity continues, there is a risk that flows or ash surges may come over the Farrells' Wall. People are advised not to work areas beneath Farrell's Wall. We therefore urge individuals who continue to ignore this advice to again think very seriously before making trips to these highly hazardous zones.

Montserrat Volcano Observatory