The Atlantic High Pressure System is building across the area, with St.Vincent and the Grenadines (SVG) positioned on its’ south western edge. Meanwhile, relatively moist mid levels and the eastward movement of a low pressure area at the upper levels, short wave troughs could support showers across mainland St.Vincent early morning Saturday. A low level trough/shearline should be
across the islands Saturday into Sunday with scattered showers increasing by afternoon across SVG. Instability across our area could further intensify Sunday evening, as the upper level troughing possibly deepens across our area. Elevated moisture and instability could continue on Monday with favourable upper level condition enhancing thunderstorm activity.
Expect gentle to moderate (10 - 25 km/h) east south-easterly breeze with a temporary reduction in speeds to possibly light (5-10km/h) late Saturday, while backing to north-easterly. Direction may vary on Saturday, followed by general increase in speeds late Sunday to become possibly fresh by Monday.
No significant dust concentrations are expected until Monday afternoon a thin patch of dust could concentrate across our area.
Expect slight (0.5 - 1.2m) seas on the west coasts and slight to moderate (1.0 - 2.0m) seas on the east coasts with north north-easterly swells. A decrease in wave heights (0.5 - 1.5m on east coasts) should be noticeable by late Saturday with occasional smooth seas possible on western coasts. Wave heights should rise again during Monday in response to increasing wind speeds.
NOTES Based on 12z analysis:Tropical wave along 53W from 07N-21N based on the satellite imagery and observations, moving west at around 5-10 kt. Maximum in Total Precipitable Water is noted with the wave.
Scattered showers near the wave axis from 11N-14N between 48W-55W....... about 480 nmiles away … Saturday trough feature
At 5:00 pm, the center of Hurricane Leslie was near latitude 33.9 North, longitude 24.1 West. Leslie is moving toward the east-northeast near 35 mph (56 km/h). A fast motion toward the
east-northeastward is expected to continue through Saturday, followed by a slower east-northeastward motion Saturday night and Sunday. On the forecast track, the center of Leslie will
pass north of Madeira Island tonight and early Saturday, approach the southwestern portion of the Iberian Peninsula on Saturday, and move inland over portions of the Iberian Peninsula
late Saturday and Sunday. ….not a threat to SVG
At 5:00 pm, the center of Tropical Storm Nadine was near latitude 16.4 North, longitude 37.7 West. Nadine is moving toward the west-northwest near 15 mph (24 km/h). A motion toward
the west at a similar forward speed is expected tonight through dissipation. …not a threat to SVG
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