The level of activity overnight has been slightly higher than yesterday but still remains at an overall low level. The seismic records have been dominated by rockfall signals. These picked up in size and frequency from around 3:00 am. Several moderate sized rockfalls have occurred since then with some producing ash clouds which were visible in the moonlight. Only a few earthquakes have been recorded. A period of tremor was recorded on the Gages seismometer from 7:00pm until 10:30pm last night.
Cloud is currently obscuring the top of the volcano.
Despite the apparent low level of activity, the volcano remains dangerous. The lava dome continues to grow at the summit area, and is now almost as high as the previous maximum height achieved in July 1996. There are several areas on the dome which are becoming more unstable, and pyroclastic flows are possible with little warning. Explosive activity similar to the September 17 event, and maybe slightly larger, is possible. Only essential visits should be made to zone C and people should remain alert, listen to Radio Montserrat and be ready to leave at short notice.