Weak instability with occasional showers and thunderstorm activity lingers across our northern-most islands tonight, spreading across St. Vincent and the Grenadines (SVG) during Tuesday. A tropical wave with a low pressure area is approaching the island chain, with a chance (30%) for slow development. Low-level moisture could increase across SVG Tuesday night, triggering a few showers during Wednesday. A trailing trough could occasionally enhance showers with thunderstorm activity during Wednesday night into Thursday.
Gentle to moderate (‘~15 – 30 km/h’) east south-easterly breeze across our islands could turn east north-easterly late Tuesday as the tropical wave