A wake cloud off Barbados is expected to move across SVG during the evening.
Additionally, instability and elevated moisture at lower levels, should continue tonight as easterly waves pulsing off the Inter Tropical Convergence Zone (ITCZ), move northward across the island chain.
Favorable upper level pattern/conditions support and enhance showers with occasional moderate to heavy downpours and thunderstorm activity.
One such pulse is expected tonight and another late Tuesday from a degenerated tropical wave.
By late Wednesday instability due to shearlines associated with an approaching tropical wave, could affect our islands ahead of the axis late Thursday.
Models indicate near 2 inches (40-50mm) rainfall accumulations are possible over next few days… Residents and motorists near rivers, streams and low-lying areas should be alert.