Unstable conditions across the Leewards and northern Windward Islands could spread southwards across our area this evening into Friday, bringing occasional showers and isolated thunderstorm activity.…motorists and residents should exercise caution as shower activity could be enhanced (become moderate to heavy showers overnight/early morning) with an upper-level trough deepening near the Eastern Caribbean inducing lower-level trough.
A decrease in shower activity is anticipated during Saturday with a pocket of dry air, but moisture at mid-level could increase again late Saturday behind a lower level trough/tropical wave as it crosses the Southern Windward Islands. Meanwhile, upper-level features could occasionally enhance showers and isolated thunderstorms during Sunday. Models suggest that significant shower activity for this event can be expected south of our Grenadine Islands…persons vulnerable to heavy rainfall accumulations and thunderstorm activity should be alert.
East south-easterly moderate to fresh (20 - 40 km/h) breeze could occasionally veer southerly across our area over the next few days.
Slight to moderate sea conditions are expected with Sea-swells ranging 0.6m to 1.2m on the west coasts and 1.2m to 1.8m east coasts, originating from the north-east.
Barometric readings should range 1011mb to 1014mb across our area, slightly dipping late Saturday with the passage of a trough.
A thin patch of Saharan dust could occasionally reduce visibility with slight haze across our islands this afternoon. Some thinning of the concentration is expected tonight, but slight haze is expected again during Sunday.
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