Activity at the Soufrière Hills Volcano remains at a low level.

The seismic network recorded four rockfalls, one long period and ten volcano-tectonic (VT) events.

Owing to southerly winds for most of the week sulphur dioxide measurements were only made on one day and gave a value of 516 tons per day. These unusual wind directions resulted in sulphurous smells in inhabited areas several times this week.

A moderate pyroclastic flow occurred on the south side of the volcano on the afternoon of 9 June, although the exact valley down which it travelled and its runout is unclear. Ash from this flow drifted north and very light ash fall occurred in northwest Montserrat. This is the first pyroclastic flow to the south for more than one year.

Despite the low level of activity, sporadic pyroclastic flows will continue to occur without any warning. The Hazard Level is 3. There is no access to the terrestrial Zone C and only daytime transit access to shipping through the maritime extension of the zone.

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