An adult male was struck by lightning Sunday afternoon as he stood in the middle of a school yard.

Emergency crews rushed to the grounds of Blantyre Public School on Blantyre Avenue in the Toronto's east end and located the victim at the rear of the school.

They immediately started to administer CPR. The man, who is believed to be in his late 20s, was rushed to hospital in critical condition.

Thunderstorms drenched the city as Environment Canada issued several severe weather warnings for southern and northern Ontario.

A severe thunderstorm watch was issued for northern Durham region, Uxbridge and Beaverton. Earlier, a tornado warning was issued but Environment Canada downgraded the forecast just after 5 p.m.

A severe thunderstorm watch has also been issued for parts of York Region, including Vaughan, Richmond Hill and Markham.