A tornado warning and heat alert issued by Environment Canada for the London and Middlesex region have ended.
The tornado advisory, issued around 6:40 p.m. and dropped around 7:18 p.m. said a severe storm was tracking across southwestern Ontario and was “possibly producing a tornado.”
The warning was dropped by the agency for Strathroy, Komoka and western Middlesex County around 7 p.m.
It was dropped in London, Parkhill and eastern Middlesex about 20 minutes later.
A Tornado warning was also issued for St. Thomas, Aylmer, and eastern Elgin County just after 8 p.m. but was dropped a short time later by Environment Canada.
A tornado warning had been in effect for the Sarnia-Lambton region, but was dropped at 6:52 p.m. The warning was the second of the day in the county after one issued shortly before 5 p.m. was dropped around 5:20 p.m.
It was nearly two months ago when a severe thunderstorm involving a derecho passed through southern Ontario, spawning two tornadoes in the city within minutes of each other.
No injuries were reported, but the storm caused significant damage and left thousands in the city in the dark for hours, some for days.