Weather conditions will be favourable on Wednesday evening and Thursday for the appearance of fog banks over the north, central-eastern regions and the south, according to a special bulletin issued by the National Meteorological Institute. The fog will be locally thick, especially over coastal areas, valleys and near dams and forests, reducing horizontal visibility to less than 200 metres. The fog will gradually dissipate from 9am on Thursday. Source: Agence Tunis Afrique Presse