Grenada: The Meteorological Service of Grenada outlined that an Atlantic tropical wave has been approaching the country. The wave is located 86 nautical miles, which is east of Grenada. The wave is moving westward.
The Meteorological Office at the Maurice Bishop International Airport has advised that an Atlantic tropical wave is approaching the island chain and is about 86 nautical miles (nm) east of Grenada and moving westward.
The wave is engulfed in the ITCZ moisture and scattered moderate to isolated strong convection is observed. Based on its forward speed and model projections, the axis of the wave would traverse the island chain on Wednesday afternoon, inducing periodic cloudiness, showery activity, and periods of rain and medium chance of thunderstorms.
Due to the approaching system there will be an increase in cloudiness and rainfall expected overnight. Models further suggests that the tail end of the wave, coupled with ITCZ activity may trigger similar conditions on Thursday and parts of Friday if conditions remain conducive.
With a medium (40% to 60%) chance of flooding forecast, likely impacts include landslides/treefall between Wednesday and Friday if moderate or heavy showers or prolonged periods of rainfall occur.
Winds may become gusty at times and seas may become agitated. Hence a small craft advisory is in effect. Therefore, NaDMA encourages citizens to be mindful of the approaching tropical wave and the possible impacts it can bring. The likelihood of flooding and landslides will be increased based on the amount of rainfall received in the past few days.
A Tropical Wave is passing through the Windwards. Areas of moderate to strong thunderstorms east of the Windwards and T&T have recently weakened but light to few moderate showers have spread out into the Windwards. The outflow from the collapsing thunderstorms will likely leave lines of convergence where new showers and thunderstorms will form later today and tonight. There’s a medium chance of thunderstorms on Trinidad in mid-late afternoon with daytime heating delayed by cloudiness.
More showers and isolated thunderstorms especially southern islands expected from the early Thursday morning as a surface trough approaches.