Activity at the Soufrière Hills Volcano is low.
The seismic network recorded one rockfall and three volcano-tectonic earthquakes this week.
Sulphur-dioxide measurements were possible on only three days this week, giving an average flux of 359 tonnes/day with a maximum of 540 and a minimum of 258 tonnes/day.
There appear to have been no changes in the large slab recently observed to be peeling away from the dome above the Tar River Valley. The slab is now estimated to have dimensions of 80 by 60 by 4-6 metres. If this slab falls as a single block it will produce a large pyroclastic flow in the Tar River Valley, safely away from populated areas
Pyroclastic flows can occur at any time without warning on any side of the volcano, including Gages from where they can travel rapidly into Plymouth. Tracks across the Belham valley are frequently destroyed or heavily modified by flash flooding or lahars, and caution should be exercised crossing the valley during and after rainfall.
The Hazard Level is 2. There is no access to Plymouth or Zone V. There is daytime access to Zone C: 8 am to 4 pm, Monday to Saturday. Maritime zone W remains daytime transit only (boats may sail through the zone but must not stop).
Volcanic activity - Weekly reports