Environment Canada has confirmed an EF1 tornado touched down in Grand Bend, Ont., between 7 and 8 p.m. ET on Sunday, leaving behind a five-kilometre trail of broken tree limbs and downed hydro poles.

The agency received reports of severe weather after a storm passed through the area on Sunday, said Geoff Coulson, a warning preparedness meteorologist. A damage survey team was in the area on Monday to assess the damage.

Coulson said the agency also received photographs and reports of high winds and what appeared to be funnel clouds north of Cambridge, Ont., and near Millbank in Wellesley Township, but there is no indication that any funnel cloud touched the ground, which would make it a "full-fledged tornado."

"Fortunately, the worst is over," said Coulson.

"The rain will be pulling out later today and we are looking at an improving situation weather-wise for the rest of the day." 

Coulson said that for the rest of the week, southwestern Ontario will get cooler than normal temperatures, well below the seasonal average of 26 C.