Instability is now expected to decrease early Thursday as the Atlantic High-Pressure System builds quickly across the islands with dry stable air at mid to upper levels.
A thick plume of dust behind the tropical wave, is approaching the island chain, caught in the High-Pressure clockwise circulation, this plume could significantly reduce visibility and air quality.
Although the High-Pressure System should dominate, sufficient lower level moisture could result in few showers late Thursday and a lower level trough associated with ITCZ activity could move northward during Friday to reach the island chain with showers.
