A trough system affected mainly the Northern Windward and Southern Leeward Islands today, with moderate to heavy showers and isolated thunderstorm activity. Isolated areas across SVG had pockets of moderate showers during the day. The presence of a thick layer of dust concentration did inhibit widespread shower activity.
Overnight, instability should stay just north of our islands with mostly cloudy skies and a few showers across SVG. Cloudiness should be decreasing tomorrow with a few isolated showers as instability moves out/west of our area. The Atlantic High Pressure System should be establishing across the area by Wednesday. Our islands should be positioned on the south western edge of the High Pressure with some pulses as wind/moisture converge, aided by weak upper level enhancement to result in few scattered showers on Thursday.
Moderate to fresh (20-38 km/h) east south-easterly breeze can be tonight, becoming steadily fresh and easterly during Wednesday. Mean sea-level pressure ranging 1014-1016 mb overnight, should steadily rise Tuesday to 1016-1018 mb by Wednesday.
Slight to moderate sea swells should peak near 1.8 on the west and 2.5m on the east coast. Small craft operators and sea bathers should continue to exercise caution. Thick dust concentrations are reducing visibility and air quality across our islands. The concentrations are expected to become patchy on Thursday and thin out Thursday night.