Montserrat Volcano Observatory

Daily Report
Report for the period 5 p.m. 21 August
to 5 p.m. 22 August 1998

The level of volcanic activity at the volcano was low today. There were 6 rockfall signals, 7 volcano-tectonic earthquakes, 1 hybrid earthquake and 1 long period earthquake over the last 24 hours.

Steam and ash venting from fumaroles on the dome is now much less vigorous and activity has returned to the low levels observed early last week Nevertheless, the jet engine sound produced by the venting could be heard at Trants today.

Some fresh rockfall debris was observed this morning in the upper part of Gages valley. There has been little activity in this area for several months but there is clearly potential for further rockfalls and pyroclastic flows which may occur without warning.

The smell of sulphurous gases throughout the inhabited part of Montserrat last night was due to the wind which was blowing to the north. Cospec measurements made from the helicopter this morning show that the sulphur dioxide flux was 503 tonnes per day, this is similar to the low levels recorded early last week.

Dust levels were low at all stations.

Residents should continue listening to Radio Montserrat in case there are sudden developments in the state of the volcano.

Montserrat Volcano Observatory