Monday, May 21, 2012

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

 One rockfall and two volcano-tectonic earthquakes were recorded by the seismic network this week.

The average sulphur dioxide measurement over seven days this week was 340 tons per day with a maximum of 493 and a minimum of 194 tons per day.

Partial glimpses of the lava dome this week showed no significant changes.

Pyroclastic flows can still occur at any time without any warning. Lahars (mudflows) also remain a hazard.  Tracks across the Belham valley are frequently destroyed or heavily modified by lahars, therefore 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).

Category: Weekly reports