An approaching surface to low level trough is expected to move over the southern part of the region overnight and linger during the next 24 hours. As a result, deterioration in the weather conditions is likely over St. Vincent and the Grenadines from late tonight and into tomorrow (Wednesday), with cloudy skies and some pockets of moderate to heavy showers. Consequently, Residents and motorists in low lying areas and near rivers and streams should be alert.