Montserrat Volcano Observatory

Morning Update
0700H 06 July, 1996

The overnight seismic activity at the Volcano followed recent trend - several small to moderate sized rockfalls and a few isolated hybrid earthquakes. There were also two periods during which there was slightly vigorous broadband tremor. These periods of tremor coincided with strong overnight showers. The pattern of seismicity suggests that the lava dome inside English' s Crater is still actively growing.

There were three events of notable size during the update period - a near regional earthquake at 16:12 and two rockfalls at 20:07 and 21:40. All events had durations in excess of one minute and were recorded against a background of smaller rockfall and hybrid earthquake signals. Long period events were absent from the records overnight. Two periods of vigorous broadband tremor were noted from about 12:15 am to 03:30 am and from 06:10 to 07:00 am this morning.

Visibility was poor yesterday evening and this morning, with the volcano obscured by clouds.

The threats posed by the Soufriere Hills Volcano continue at the same or greater severity as over the past several months. The Tar River, Long Ground and Whites areas to the east and the upper Fort Ghaut, Gages Village and Upper Amersham areas to the west are still extremely hazardous. People should not enter these areas under any circumstances because they put themselves and others at direct risk of very serious injury or death. People are urged to keep visits to the evacuated zone to an absolute minimum.

Montserrat Volcano Observatory