Montserrat Volcano Observatory

Morning Update
Report for the period 16:00 09 September
to 07:00 10 September 1996

The level of activity at the Soufriere Hills volcano during the night was at about the same relatively low level as that observed during the previous reporting period. The sequence of volcano-tectonic earthquakes which had started at 12:38 during the previous reporting period yesterday 09 September ended at around 17:40 on the same day. Another sequence of volcano-tectonic earthquakes started at 01:33 this morning and stopped just before the end of this update period. The number of rockfalls remained relatively low and these were generally small- to moderate-sized. Intermittent low- to moderate-amplitude broadband tremor was recorded throughout the reporting period.

Visibility was very poor during the early morning period because of low cloud cover on the volcano.

Further rockfalls and pyroclastic flows will occur but all indications at the moment are that the pyroclastic flows will be confined to the Tar River Valley area. However, areas affected by associated ashfalls will obviously depend on the direction and strength of the wind at the time. Extreme care should still be taken when driving in ash affected areas. Dust masks should be worn at all times in ashy environments.

The Tar River Valley and surrounding areas are extremely hazardous and should not be entered under any circumstances.

Montserrat Volcano Observatory