Montserrat Volcano Observatory


Morning Update
0700H 08 April, 1996


Seismic activity has continued at the same elevated level that began at noon on April 7. The majority of this seismicity is the occurrence of small hybrid earthquakes at a rate of 1-2 per minute. These are still only recorded by the closest seismic stations to the crater. Eruption signals were recorded at 19:23 and 20:27 on 07 April, 03:05 and 03:10 on 08 April. These eruptions are interpreted to be explosive in nature from the sudden onset of the signal. The events at 03:05 and 03:10 were larger than the earlier events. Ash plumes were confirmed visually for these two events. These drifted over Plymouth and its environs. Numerous rockfall signals of various amplitudes have also been recorded throughout the night.

Visual observations from Bramble Airport control tower at 06:10 report that the tall spine of the last few days has broken approximately in half. A new spine is visible growing to the south of this broken spine and has already reached a height equivalent to the remaining portion of the older spine. Steam emission is occurring from the eastern part of the dome in the area of the spines. Small rockfalls continue to occur from the north-eastern face of the dome in the area above Tar River.

Activity at the Soufriere Hills Volcano remains at a very concerning level. The occurrence of much larger eruptions is still a high possibility. People are once again urged to keep out of the evacuation zone unless it is absolutely imperative to return. The Tar River, Long Ground and Whites areas are now extremely dangerous, and should not be entered under any circumstances.


Montserrat Volcano Observatory