The Atlantic High Pressure System is rebuilding across the area and pumping fresh easterly breeze across our islands, while transporting Sahara dust concentrations to significantly reduce visibility and air quality…Small craft operators and persons with respiratory concerns should note that thick haze with PM2.5 levels near 52µg/m3 and PM10 levels near 74µg/m3 are expected across our area today.
A few isolated showers are possible overnight into early morning Friday, as lower level moisture interrupts dust concentrations. Haze should be thinned out by Saturday as the next tropical wave approaches the islands. Moisture and showers should gradually increase during Saturday, with instability peaking by night as mid to upper level features support showers and isolated thunderstorm activity. Shower activity should be decreased early Monday followed by a patch of Saharan dust across the area.
Generally moderate to fresh breeze (25 – 40km/h) should continue until Saturday. Wind direction should veer to south-easterly and reduce to light and gentle during Sunday.
Moderate (1.5m - 2.5m) sea conditions are across our islands again and should become slight to moderate by Friday night. Barometric readings across our islands should range 1016 - 1019mb until a fall (1015 - 1018mb) by weekend with the passage of the tropical wave.
Tropical waves between west coast Africa and Lesser Antilles:
Along 36W S of 12N. A moisture maximum is noted near this wave. Scattered showers are seen near this wave from 06N- 09N between 34W-37W …~ 1500miles away…vicinity Saturday 22nd
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