A rare weather phenomenon strikes southern Ontario again
Thundersnow has struck southern Ontario for a second time this month.
The weather phenomenon takes place when lightning and thunder strike during a snowfall.
CTV News Toronto Weather Anchor Lyndsay Morrison said thunder and lightning has been reported during a sudden snowfall on Wednesday afternoon around downtown Toronto, Burlington, Hamilton, on the QEW toward Niagara, in the Kawarthas, and near Woodstock.
“While thundersnow feels uncommon, it’s certainly not unheard of,” Morrison said.
“What’s unique about this season is that we’ve had two thundersnow events this March where it has happened in the most populated part of our country, so there have been lots of people witnessing it, recording it and reporting it!”
According to the Farmer's Almanac, thunderstorms occur when an air mass becomes so unstable that it overturns violently, usually when drastically different temperatures meet.
Local residents were quick to chronicle the “fast and furious” arrival of the spring snow, paired with a crack of thunder and lightning.
Thundersnow last struck southern Ontario less than a month ago as a major snowstorm hammered the region on March 3.
This time around, on Wednesday, a sharp cold front rushed through Toronto, bringing a “burst of heavy wet snow” after a sunny morning that began to resemble typical spring weather.
Environment Canada issued a weather advisory in Toronto for Wednesday, forecasting one to two centimetres of snow, paired with winds gusting up to 70 km/h.
With files from CTV News Toronto's Abby O'Brien
CTVNews.ca Top Stories
Special rapporteur Johnston rejects call to 'step aside' after majority of MPs vote for him to resign
Prime Minister Justin Trudeau's efforts to assure Canadians that his government is adequately addressing the threat of foreign interference took a hit on Wednesday, when the majority of MPs in the House of Commons voted for special rapporteur David Johnston to 'step aside,' a call Johnston quickly rejected.

UPDATED | 'I heard a cracking noise': 16 children, 1 adult injured in platform collapse at Winnipeg's Fort Gibraltar
Seventeen people – most of whom are young students – were hospitalized after a falling from a height during a field trip at Winnipeg's Fort Gibraltar. However, many of the children are now being discharged and sent home, according to an update from the hospital.
Engaged couple shot dead days before moving out of house near Hamilton
An engaged couple was shot dead while fleeing their landlord near Hamilton just days before they were scheduled to move out of their apartment.
Federal Court of Appeal: Canada not constitutionally obligated to bring home suspected ISIS fighters
The Government of Canada has won its appeal and will not be legally forced to repatriate four Canadian men from prisons in Northeast Syria.
Canadian consumer debt hits all-time high, reaching $2.32 trillion in Q1 2023: TransUnion
Amid interest rate hikes and high inflation, more Canadians are turning to credit for relief, with consumer debt hitting a new record in the first quarter of 2023.
Canada closing in on deal to get Stellantis battery plant back on track: Champagne
A deal to save a $5-billion electric vehicle battery plant in Windsor is inching closer, Industry Minister Francois-Philippe Champagne said Wednesday.
House moving to midnight sittings as Liberals blame Conservatives for stalling agenda
It's that time of year again where MPs will be sitting until midnight until the House rises in late June, as the federal government pushes to pass as many bills as it can before the summer legislative hiatus. On Wednesday, Government House Leader Mark Holland announced that the Commons will be working late 'every single night … from here until the finish.'
Medication shortage in Canada led to increased dosing errors in children, new study shows
A new study has found that dosing errors in children increased during the Canada-wide shortage of paediatric fever and pain medication last year.
What you may not have known about bladder cancer
Although bladder cancer is the fifth most common cancer in Canada, experts say there’s a significant lack of awareness surrounding whom it affects the most — statistically, men — and that the most common risk factor is smoking.