Soufrière Hills, Montserrat : The sulphur-dioxide flux remains elevated.

Soufrière Hills, Montserrat : The sulphur-dioxide flux remains elevated.

Activity at the Soufrière Hills Volcano remains low. The sulphur-dioxide flux remains elevated and all access to Zone V is suspended for at least another week.

Sulphur-dioxide measurements during the reporting period gave an average flux of 466 tonnes/day with a maximum of 626 and a minimum of 170 tonnes/day. The weekly average is down slightly from 485 last week, but is still elevated compared to the values of less than 300 that were typical prior to the beginning of May 2015.

Given the elevated flux, there is still concern that volcanic activity might occur without warning and that this could affect Zone V. NDPRAC has therefore extended the suspension of all access to Zone V for at least another week.

The seismic network recorded one rockfall and three volcano-tectonic earthquakes this week.

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.

July 07, 2015 .Soufrière Hills, Montserrat :

Source : MVO.

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