Montserrat Volcano Observatory

Daily Report
Report for the period 5 p.m. 18 September
to 5 p.m. 19 September 1998

Activity on the volcano remains low. Over the past 24 hours 3 rockfall signals and 9 volcano-tectonic earthquakes were recorded by the seismic network.

At 11:08am today there was a series of small pyroclastic flows some of which were observed travelling from the north side of the dome down Mosquito Ghaut and draining into Tuitt's ghaut. The flows generated dark ash clouds which travelled to the west over Plymouth. Several minutes of tremor followed the pyroclastic flows.

Heavy rainfall during Hurricane Georges is expected to generate substantial mudflows which will affect all valleys leading from the volcano. It is also possible that parts of the dome may become unstable and collapse generating more pyroclastic flows. These could affect all flanks of the volcano.

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

Montserrat Volcano Observatory