Heavy rainfall. (Photo courtesy © Can Stock Photo Inc. / sarah_jane)

UPDATE: Heavy Thunderstorms Rumble Across Region

There were reports of storm-related damage in the Arkona area as heavy thunderstorms rumbled across the region Saturday.

Environment Canada issued a severe thunderstorm warning for Sarnia-Lambton in the early afternoon.

Threatening conditions continued across southern Ontario through the day with tornado warnings being issued in some areas.

There were reports of a possible tornado in Grey County but the weather agency had not confirmed any tornado touchdown as of early Sunday evening.