Environment Canada has issued a special weather statement for Greater Sudbury and surrounding area, as up to 50 mm of rain could be on its way.
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 areas that receive multiple thunderstorms may see higher rainfall amounts.
Current guidance suggests that heavy showers will fall tonight across areas extending from Sault Ste. Marie eastwards to Espanola and 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 which depends on the track of the low and where thunderstorms develop," said the Environment Canada advisory.
"Environment Canada will monitor this weather system closely."
You can monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to [email protected] or tweet reports using #ONStorm.
