A vigorous tropical wave is now affecting SVG and should result in increased cloudiness, heavy rainfall, and scattered thunderstorms.

Although some degeneration has occurred within the tropical wave structure, interaction with the Inter-Tropical Convergence Zone (ITCZ) could cause moderate to heavy showers, periods of rain, thunderstorms and occasional gusty winds, peaking Thursday afternoon into the night.

Based on model indications, rainfall accumulations in excess of 75mm (3 inches) can be expected into the night with higher amounts in mountainous areas.

Residents and motorists should be alert and exercise caution in areas prone to flooding and thunderstorm activity/lightning strikes.

The instability could linger into Friday, but cloudiness and shower activity should be reduced by afternoon.

Reported From Met Office 72 hour Outlook