Weather Information Statement 18th September, 2018 (6pm)




Instability with cloudiness are increasing across St.Vincent and the Grenadines (SVG) with showers and isolated thunderstorms expected overnight. Gusty winds could accompany thunderstorm activity. However, the presence of dry air surrounding the tropical wave should limit the convective/shower activity. Still, persons should be alert near rivers, streams and low lying areas prone to flash-flooding. A thick plume of dust behind the tropical wave, is approaching the island chain and this plume could significantly reduce visibility and air quality.

Expect east north- easterly breeze to veer south-easterly moderate to fresh (20 - 40km/h) breeze by Wednesday morning, becoming temporarily strong (up to 45km/h) by evening. Direction should be backing to east north-easterly during Thursday. Wind speeds should generally be reduced during Friday.

Sea swells are originating from the east due north and rising, to peak near 1.8m on the west coasts and up to 2.5m on east coasts on Wednesday. Small craft operators and sea bathers should exercise caution for rising swells.... Wave heights should be decreasing by Friday.

Visibility across our area should be decreasing with increased hazy conditions by late Wednesday as the thick plume of dust approaches the islands. During Thursday visibility and air quality could be significantly reduced. Small craft operators and persons with respiratory concerns are being warned that PM2.5 levels could peak near 68 µg/m3 and PM10 levels could peak near 95 µg/m3 by Thursday evening.