Varying concentrations of Saharan dust will continue to move across the region during the next three days. A gradual thinning of the intrusion is anticipated into Wednesday across St Vincent & the Grenadines, increasing in thickness by late evening. Small craft operators and persons with respiratory concerns should continue to exercise caution for low visibility and poor air quality. There is a chance for a few isolated showers on the mainland early Wednesday and across the Grenadines during the evening. Early Thursday, instability ahead of a tropical wave could start affecting the islands with light occasional showers. By evening however, moderate showers and a low chance of isolated thunderstorms are likely to occur. These conditions are expected to persist into Friday.