The Montserrat Volcano Observatory (MVO) has released its latest weekly monitoring report indicating that activity at the Soufrière Hills Volcano remains low, though officials continue to urge caution among residents and visitors.
According to the weekly report signed by MVO Director Graham Ryan, the seismic network recorded nine volcano tectonic earthquakes during the reporting period from April 25 to May 2, 2025.
Sulfur dioxide (SO2) measurements conducted via helicopter on April 30 recorded an average flux of 559 tonnes per day across 12 traverses. The MVO has also identified a technical issue that may have affected previous flux measurements, which are currently under review for possible corrections.
Despite the low activity level, officials emphasize that “Due to the large size of the lava dome, 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.”
The report notes that “tracks across the Belham Valley can be destroyed or heavily modified by flash flooding or lahars, and caution should be exercised crossing the valley during and after rainfall.”
The hazard level remains at Level 1, the lowest on the scale, but significant restrictions remain in place. Zone V, including Plymouth, remains closed to public access. Maritime Zones E and W are restricted to daytime transit only between sunrise and sunset, with no stopping permitted.
