A tropical wave is crossing the region, but embedded dry air/dust are limiting shower activity and upper levels are not totally supportive of cloud build-ups. Still, scattered showers and isolated thunderstorm activity are possible overnight into early Friday with models indicating less rainfall accumulations.
Moderate haze embedded within the tropical wave could reduce visibility across our area by early morning
as a patch of thick Saharan dust moves with the Atlantic High Pressure circulation.
A trough should be entering the region during the weekend, with a few scattered showers. The next tropical wave should be nearing the island chain with moisture converging across the region Sunday night/early Monday. Significant showers and wind activity moving along with that tropical wave is being monitored for any development.
At the surface, moderate to fresh (25 - 40 km/h) east south-easterly breeze should decrease to moderate during Saturday. Wind direction should back to north-easterly by Sunday as the tropical wave approaches.
Sea conditions are currently slight to moderate, with easterly swells ranging 0.6 – 1.2 m on the west coasts and up to 2.0 m on the east coasts. Increased wind speeds on Friday could cause slight increased wave heights, peaking near 1.8 m on the west coasts and near 2.2 m on the east coast during Friday.
Barometric readings range 1014mb-1016mb, but should dip during weekend with the approach of the tropical wave.
Tropical waves between west coast Africa and Lesser Antilles:
Along 29W from 04N-20N, moving west at 15 kt with scattered showers within 180 nm of the wave axis...1920 miles away…south of our area Monday 22nd
Along 30N44W to 17N43W, moving SW at 25 kt (originated over the NE Atlantic) and traveling through a dry environment …1020miles away…vicinity north of island chain late Saturday 20th
Along 58W from 07N-25N, moving west at 15 kt with isolated moderate convection from 21N-25N between 56W-60W…180miles away…crossing the island chain this evening into early Friday
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