72 Hours Outlook

Moisture will increase by this evening as instability from a strong tropical wave approaches the islands. Generally, cloudy skies and showers with the chance of isolated thunderstorms are forecast Tuesday night into Wednesday; intensifying from Wednesday afternoon into Wednesday night as this broad wave moves across Saint Vincent and the Grenadines. Model guidance is indicating approximately 35mm of rainfall accumulation by 8 o’clock Wednesday night. Showers are forecast to continue throughout the night as the wave axis crosses over the islands.  A further 25mm is possible by early Thursday night as the wave moves west north-westward to affect the Northern Windward Islands.

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