72 Hour Weather Outlook (23-11-2017)
A low pressure area at low levels meanders to the east of the Lesser Antilles, and brisk easterly trades continue to push shallow cloud clusters across our area with passing showers.
We continue to monitor the mid and upper levels, as possible interactions could increase chance of showers across Saint Vincent and the Grenadines during the upcoming extended holiday weekend.
Overnight, an upper level trough could begin deepening just north-east of the island chain, developing into a low at upper levels by late Saturday with orientation such that; the divergent side positions across the island chain (SVG included). This would result in favourable support and increasing moisture across our area Sunday with a possible induced low level trough east of the island chain. As an upper level jet streams across the area by Monday, bringing moisture (increasing cloudiness) and supporting cloud build ups, the trough is expected across our area. Some scattered convective light to moderate showers are possible lingering into Tuesday.
Moderate to fresh (20-40km/h) north-easterly trades should continue across St. Vincent and the Grenadines tonight and over the weekend, with an increase expected by midweek. A thin layer of dust will be evident as slight haze on the horizon, thickening on Monday.
Slight to moderate sea swells between 1.0 and 2.0m are expected to increase by Saturday afternoon to 2.5m on east coasts; remaining moderate on Sunday. Although some reduction is possible by Sunday evening, a general increase to rough seas is expected by midweek due to increased wind speeds..... Advisories/warning may become necessary.
J. Mc Donald
Argyle International Airport
St. Vincent & the Grenadines
Phone: (784) 458-4477