Montserrat Volcano Observatory

Daily Report
Report for the period 5 p.m. 26 July
to 5 p.m. 27 July 1998

Activity at the volcano was higher today than yesterday. 21 volcano-tectonic events and 11 rockfall signals triggered the network. There was also a mudflow signal at 5:09am and a pyroclastic flow signal at 2:09pm today.

The mudflow occurred in the Belham River valley but deposited very little debris. It may have been caused by the heavy early morning showers experienced on the island. An observation flight conducted shortly after the pyroclastic flow this afternoon indicates that the flow reached the delta but did not extend to the coastline. The accompanying ash cloud drifted towards the east depositing ash in Salem, Old Town and Olveston.

COSPEC measurements conducted from the MV Shamrock II today gave a sulphur dioxide flux of 1156 tonnes per day. This is slightly elevated from the last measurement done on Saturday 25th August which gave a flux of 500 tonnes per day.

Dust levels were low at all stations measured today.

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

Montserrat Volcano Observatory