Significant rainfall is expected in Sarnia-Lambton over the next 24 hours.
Environment Canada has posted a special weather statement advising up to 50 millimetres of precipitation is possible from Monday night through Tuesday.
The agency said periods of rain, which may be heavy at times, as well as the risk for thunderstorms will impact the area.
The weather system is expected to clear the area by late Tuesday afternoon or evening.
The agency said areas that see prolonged periods of heavy rain or multiple thunderstorms may see higher amounts which may require rainfall warnings.
