The seismic network recorded three volcano tectonic earthquakes this week.
Six traverses were done using the boat traverse method to measure SO2 flux values on 29th August. The average flux measured was 177 t/d.
The smell of gas was reported in northern parts of the island on Wednesday, 28th August. This was due to a southerly wind blowing the gas plume to the north. It does not represent a change in activity.
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 can be destroyed or heavily modified by flash flooding or lahars, and caution should be exercised when crossing the valley during and after rainfall.
The Hazard Level is 1. There is no public access to Zone V, including Plymouth. Maritime Zones E and W are daytime transit only between sunrise and sunset (boats may sail through the zone but must not stop). Anyone who ignores these restrictions is liable to be prosecuted.
Monday 2 September 2019
Air Quality Index (AQI) Based on Particulate Matter 2.5 (PM2.5) and 10 (PM10) Concentration
Synopsis: The AQI remains at moderate levels, as a result of Saharan dust. This will keep the risks elevated for health problems for unusually sensitive people, such as asthmatics.
The worst of it will be over the next 24 hours. Alert Level: II
Location: Antigua and Barbuda
AQI: 50 to 60
AQI category: Moderate
Timing: Until Tuesday
Sensitive groups: People with respiratory or heart disease, the elderly and children are the groups most at risk.
Health implications: Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Caution: Unusually sensitive people such as active children and adults, and people with respiratory disease, such as asthma, should limit prolonged or heavy exertion.