UPDATE: June 29 7:30am
Environment Canada has now ended the special weather statement for the area.
Have your umbrella handy, a series of low pressure systems promises to bring prolonged periods of rain showers in the next 24 hours and then followed by a broken pattern of showers and clearing and then back to showers stretching into the weekend. Environment Canada has issued the following for the immediate area.
Special weather statement in effect for:
Sault Ste. Marie – St. Joseph Island
Searchmont – Montreal River Harbour – Batchawana Bay
25 to 50 mm rain possible overnight tonight, Thursday and Thursday night.
A low pressure system developing over Minnesota will track slowly eastwards. Shower with embedded thunderstorms will start late this evening east of Lake Huron and Georgian Bay, and then spread into eastern Ontario by Thursday morning. Total rainfall amount in general will be in a range of 20 to 40 mm. Some localities that receive multiple thunderstorms may see higher rainfall amounts.
Current guidance suggests heavy showers tonight will fall across areas extending from Sault Ste. Marie eastwards to Espanola – Killarney with local amounts up to 50 mm. Areas from Grey – Bruce to Barrie – Orillia – Midland may see total rainfall amounts up to 40 mm. There is still some uncertainty at this time depends on the track of the low and where thunderstorms develop. Environment Canada will monitor this weather system closely.