Rain is expected to keep falling across southwestern Ontario today adding to already sodden conditions across the region.

Environment Canada says rain has been coming down since Wednesday night, causing accumulations ranging from 85 millimetres at Windsor International Airport to 150 millimetres or more in Tecumseh as of Friday morning.

The agency is predicting another 20 to 50 millimetres in the next 24 hours across the area.

The mayors of both Windsor and Tecumseh have declared states of emergency due to flooding in their communities.

Pumping facilities are working at maximum capacity, Tecumseh transit is closed until further notice, and many local roads are closed due to flooding.

Environment Canada says Chatham-Kent is also receiving an unusual amount of rain and could expect a further 20 to 40 millimetres by Saturday morning.

The Canadian Press