Model guidance is not indicating any significant shower activity across Saint Vincent and the Grenadines over the next 72 hours. Low level moisture remains elevated throughout forecast period (up to Tuesday night), however moisture at mid to upper levels will gradually decrease.
These conditions along with dry Saharan dust may limit any significant shower activity from the tropical wave that is forecast to be in the vicinity around Sunday.
The Atlantic high pressure system will dominate the weather pattern across Saint Vincent and the Grenadines thereafter. Therefore, strong easterly trades will bring moisture into the vicinity resulting in some scattered showers from time to time especially in the early morning and late evenings. Wind speeds are forecast to increase to approximately 50km/h on Monday and consequently sea conditions should become moderate to rough (2.0-2.5) in open waters. A small craft warning may be issued.
After which, around Tuesday, mid to upper level instability is forecast to be to the east of the island chain. Model guidance is indicating that an active Inter-Tropical Convergence Zone (ITCZ) in conjunction with this trough like feature will generate cloudy skies, scattered showers and possible thunderstorm to the south, mainly over Trinidad and Tobago. Further monitoring will be done. Saharan dust intrusion is forecast over the weekend into the new week.