Environment Canada has issued a special weather statement for southern Ontario.
The statement covers Windsor-Essex, Chatham-Kent and up through Sarnia-Lambton, London-Middlesex, Huron-Perth, Waterloo-Wellington and Gray Bruce.
Isolated strong wind gusts and thunderstorms are associated with a system expected late Sunday.
According to Environment Canada, the thunderstorms are not expected to be particularly strong but isolated wind likes up to 70 or 80 km/h will be possible.