This afternoon, the chance for scattered showers increases as a surface to low level shearline with moisture ahead of an approaching Tropical wave crosses the islands. Models indicate 1 - 2 inches (45 - 60mm) rainfall accumulations are possible across parts of St.Vincent and the Grenadines SVG between Tuesday and Wednesday …Residents and motorists should be alert.
Scattered showers are expected tonight and Tuesday, and isolated thunderstorm activity can be expected to continue on Wednesday with favourable upper level conditions. Cloudy skies with occasional moderate to heavy showers and periods of rain may decrease temporarily Wednesday night to return on Thursday as a surface to low level shearline trails the tropical wave.
Model projections are currently indicating most of thunderstorm/shower activity across the northern Windward and Leeward Islands (Dominica Guadeloupe area)… any development of this system will be monitored.
Moderate (20-30km/h) east north-east trades should back to north-east overnight announcing the approach of the next tropical wave, with winds veering to east south east overnight Wednesday afternoon.
Barometric Pressure could range near 1014mb - 1016mb this afternoon, decreasing to 1013mb - 1014mb by early Tuesday.
Expect slight (0.5m – 1.2m) swells on both west and east coasts in east north-easterly swells.