Activity at the Soufrière Hills Volcano is low.

There were four rockfalls recorded by the seismic network this week.

The average rate of sulphur dioxide emission for seven days this week was 395 tonnes per day, with a minimum of 304 and maximum of 457 tonnes per day. As with last week these values are from one station only and it is likely that they are underestimates.

Heavy rain on the morning of 29 May generated lahars on the western side of the volcano. Lahars in the Belham valley were small, but flash flooding was extensive and prevented crossing the valley for several hours.

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 daytime access (8:00 am to 4:00 pm) to Zone C. Maritime zone W remains daytime transit only (boats may sail through the zone but must not stop).

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