Some approaching moisture embedded within the wind field coupled with marginally favourable upper level conditions may instigate some isolated showers across St. Vincent & the Grenadines early Monday. A few afternoon showers are likely over the mainland while this may be experienced across the Grenadines by nightfall. On Tuesday, instability ahead of a tropical wave that draws closer to the island chain would allow for occasionally cloudy skies and a few sporadic showers with a slight chance of isolated thunderstorms. Late Tuesday into Wednesday, models suggests a medium chance of moderate showers and isolated thunderstorms as the wave affects the islands.