The Weather Network

Widespread thunderstorms, including some severe, are expected across Ontario on Wednesday. Localized flooding presents the most significant hazard as atmospheric moisture levels are forecast between 40-60 mm, highlighting a heightened flood risk. Gusty winds of 80+ km/h are also possible in organized thunderstorm activity.

Welcome to fall on the West Coast! Summer-like weather isn’t going to give up without a fight. Folks throughout British Columbia can expect defiant autumn weather over the next couple of months. Here’s a look ahead at what you can expect from autumn across B.C. Fall will prove to be a defiant season The cooler weather that arrived in early September doesn’t necessarily mark the end of warmth across the region.

Fall is a season of transition and Alberta often takes a front-row seat to the swinging pendulum of autumn weather. The season ahead looks to buy some breathing room for folks throughout the province after a stormy summer left operations running behind. Hiccups in the pattern are guaranteed during this season of change.

El Niño will cast a long shadow across Ontario’s fall this year. But this season won’t be all bad news for folks who love extended summer and those looking forward to classic autumn days. Here’s what you can expect from the next few months as Ontario takes the plunge from summer toward winter.

Here’s what you can expect across the Atlantic provinces this season from Halifax to Nain. Keeping a close watch for impactful storms This fall should feel closer to normal in Atlantic Canada than just about anywhere else in the country. Overall, temperatures should finish close to the seasonal mark, though cooler interruptions may be more noticeable through early fall. All eyes this season will remain on potential tropical activity.

Fall is Canada’s ultimate transition season, but an exceptional El Niño will slow that transition considerably. Autumn begins with echoes of summer and ends on winter’s doorstep. The question is how quickly we move through the season ahead. Fall 2026: The long road to winter One of the strongest El Niño events ever observed is intensifying in the tropical Pacific, setting the stage for a more gradual transition through fall across Canada.

Unfortunately, that won't be the case. An upper trough will move across the Great Lakes throughout the day on Wednesday, elevating the risk of thunderstorms in southern Ontario. Some of them could turn severe, with heavy rain, gusty winds and localized flooding as the main threats. Heat, humidity sneaks in for midweek storm threat in southern Ontario As the Prairie low lifts across northwestern Ontario and moves into Hudson Bay, a more muggy southerly flow will develop across the heart of Ontario.

About 1,500 Manitoba Hydro customers in Winnipeg were still without power on Tuesday, and some won't get it back until Wednesday afternoon, Manitoba Hydro spokesperson Peter Chura said. "The scale of this damage, the severity of the damage in such a confined area is creating access issues," he said at a news conference on Tuesday with Mayor Scott Gillingham and Jason Shaw, deputy chief of emergency management for the Winnipeg Fire Paramedic Service.

Torrential rain hammered parts of Japan's Tokai region on Tuesday afternoon, leading to significant flooding and transportation interruptions. Nagoya, Japan, recorded nearly 105 millimetres (104.5 mm) of rainfall in one hour, the highest ever documented in the city. In a matter of 12 hours, 213 mm of rainfall fell on the community.

The 2026 Atlantic hurricane season is tracking significantly behind historical norms and may set a new record for its delayed activity. As of this week, the first hurricane of the season has yet to form, far behind the average first occurrence date of August 11. The current record for the latest first hurricane formation in the Atlantic is September 11, set by Hurricane Gustav in 2002 and tied by Hurricane Humberto in 2013.