Montserrat Volcano Observatory

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

The level of volcanic activity at the volcano was low today. There were 13 rockfall signals and 1 volcano-tectonic earthquake over the last 24 hours.

The COSPEC traverse made yesterday was processed and the SO2 flux was estimated at 450 tonnes/day.

The wind was blowing to the north-east and there were very clear views of the dome. A large spine remains at the summit, although the major spine observed to form in early March disappeared in the 3 July collapse. The mass of lava above Gages (erupted in August and September 1997) had a fresh scar from an avalanche, confirming observations a few days ago of new rock falls in the upper parts of Gages valley. A deep chute has formed between the dome and Chances Peak and small rock falls were observed today in this area. Parts of the dome adjacent to the chute are overhanging. On the Tar River side the dome is a vertical cliff. These observations indicate that the dome remains in an unstable condition and further rock falls and pyroclastic flows down the White River and Tar River are likely.

Dust levels were low today.

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

Montserrat Volcano Observatory