Ontario's Weather Was So Rainy Yesterday It Almost Caused A 'Billion Dollar Flood'

Talk about a close call.

Toronto street in the rain. Right: Storm clouds looming

Toronto street in the rain. Right: Storm clouds looming

Contributing Writer

After three days of getting drenched by Ontario's weather, residents are finally getting a much-needed break, one that couldn't have come sooner. Seriously, it was almost so bad.

According to The Weather Network (TWN), a combination of slow-moving thunderstorms and flooding rains almost caused a full-on crisis in the Greater Toronto Area (GTA) over the weekend, with areas like Brampton and Barrie recording over 120 millimetres of rain.

The torrential downpours weren't widespread. However, some areas north of the GTA saw a whopping 250 millimetres of rain, an event that left regions on the edge of a disaster.

"These thunderstorms can be so localized, but we are teetering with devastation when they track through the GTA like they have," said Tyler Hamilton, TWN meteorologist.

A dangerous mixture of high moisture and dying thunderstorms shifted over urban areas Saturday and Sunday. Hamilton added, "that's when a billion-dollar disaster looms."

Monday was also a nail-biter for weather experts as heavy rains, flash floods and thunderstorms plagued the province, allowing downpours to hang over regions for extended periods.

Tuesday will be noticeably less wet, but the threat of rain and thunderstorms will remain, especially for eastern parts of the GTA.

In conclusion, you'll want to keep your umbrella on you on Tuesday as the weather, although mostly sunny this morning, could take a turn for the worse.

If there is a silver lining within these doomsday predictions, it's that the rain likely helped plant life that has suffered during this year's parched summer. Frogs were probably stoked as well.

  • Contributing Writer

    Patrick John Gilson (he/him) is a Contributing Writer with Narcity Media. He is a pro at ensuring his content is both exciting and tailored to millennials. He specializes in breaking news and investigative stories that require him to be on scene— something he enjoys and thrives in.

An ice storm threatens 20 mm of freezing rain and warnings are in effect for parts of Ontario

Power outages and property damage are likely because of ice build-up.

A storm is forecast to drop up to 20 cm of snow in southern Ontario by this weekend

"Prepare for quickly changing and deteriorating travel conditions."

I'm a newcomer to Toronto and this is what locals get wrong about the TTC

Here's why Torontonians don't know how good they have it. 👇

I moved from Ontario to Alberta and these 6 things cost me way less now

Calgary is WAY cheaper than Ottawa, allow me to explain...💰

Conservatives are pushing a 'stand your ground' style law for home invasions

The law would protect people from being charged for acting in self-defence during a break-in.

Canada just promised $37M in humanitarian aid for civilians in Lebanon

The funding will go through UN agencies and the Red Cross to provide food, medical services, shelter and clean water.

Unemployment rates in Canada very so much by city — Here's where they stand in February 2026

Here's a quick glance at unemployment rates for February, by Canadian city.