Soufriere Hills Volcano, Monsterrat:
Hazard Levels and Access Restrictions
4 November 2011
- A – South of Nantes River, including: Salem, Frith, Flemmings, parts of Olveston and Old Towne, and upper part of Happy Hill
- B – Iles Bay, Belham, Waterworks, parts of Old Towne and lower part of Happy Hill
- C – Cork Hill, Weekes, Fox’s Bay, Richmond Hill and Delvins.
- F – Corbett Springs, Locust Valley. This zone is dedicated to farming and is defined by NDPRAC.
- V – St George’s Hill, Soufriere Hills, South Soufriere Hills, Plymouth, Lee’s, Harris, and Spanish Point
MARITIME EXCLUSION ZONES
- W – 2 km offshore between Sturge Point and O’Garra’s.
- E – 4 km offshore between Roche’s Yard and Spanish Point, decreasing to 2 km offshore from Spanish Point to Pelican Ghaut.
- The Hazard Level System is not related to the Alert Level used prior to 1 August 2008.
- The descriptions of types of volcanic activity are indicative only. The level will be set by the MVO based on assessment of actual activity.
- For example, growth contained by the crater or non-growing lava dome contained by the crater.
- Measured activity refers to all the monitoring techniques used by Montserrat Volcano Observatory (MVO) including seismic, ground deformation, gas measurements, and visual observation.
- For instance, mild ash venting from vents located on the northern or western side of the crater with no measured activity that might be a precursor to larger activity.
- Any change in measured activity which may be the precursor to an eruption caused by a sudden rise of magma beneath the dome. This may, or may not, be accompanied by surface activity such as explosions or dome growth.
- A high level of measured activity which may be the precursor to an eruption caused by the steady rise of magma within the volcano. This may, or may not, be accompanied by surface activity such as explosions or dome growth.