A video capture of the tornado near Rigaud, Quebec Monday afternoon. The storm did significant damage to at least 4 homes and a silo. Power was also knocked out across the region that borders the Ontario border along Highway 40 (Credit Peter Dunn)  The team from the Northern Tornadoes Project out of Western University in London, Ontario will be on the ground today near Rigaud, Quebec 70km west of Montreal, to confirm and rate yesterday afternoons apparent tornado. Social media posts and eyewitness accounts show a tornado on the ground just west of Riguad around 5:30pm. The storm ..read more

Unsettled weather is expected to end the month of May in Montreal. We can expect showers and thunderstorms through mid week, with a few sunny breaks at times. Temperatures will be warm to start the week but cool off behind the storm system.  We have an unsettled and at times stormy weather week ahead for southern Quebec. Strengthening low pressure will slowly move across the central Great Lakes and into far western Quebec over the next 24 hours. The low will then move across central Quebec most of the upcoming week before lifting into the north Atlantic. The system will drag a wa ..read more

Strong thunderstorms across eastern Ontario began to weaken before reaching Ile Perrot and Montreal. They still managed to produce this spectacular gust front around 7pm, along with winds over 70km/h and 10mm of rain in just a few minutes (ValleyWeather Photo). Summer weather has streamed into southern Quebec and eastern Ontario over the last 36 hours, along with elevated heat and humidity and scattered strong thunderstorms. The temperature on Tuesday climbed into the high 20s close to 30C for many parts of the region. This was followed by a strong cluster of thunderstorms that pushed ..read more

Warmer, summer-like temperatures are expected for the long holiday weekend across southern Ontario and Quebec. Enjoy!  It has certainly been a chilly April and May to date, with temperatures stuck in the low to middle teens most days. While not unpleasant, many have been waiting for shorts and sandals weather to arrive, and it is here just in time for the Victoria Day long weekend. The temperature reached 25.6C (78F) in Montreal on Thursday afternoon, the warmest so far in 2024. A weak frontal boundary will lift across the region on Friday, and we are already seeing some south to ..read more

The Aurora Borealis as seen from by back deck on Île-Perrot late Friday evening. The Solar Storm that slammed into the Earth's atmosphere on Friday, May 10 produced a spectacular display of the Northern Lights across Canada, Europe and deep into the southern US. (Valley Weather Photo) As predicted the solar storm that reached the Earth's atmosphere on Friday evening was simply spectacular. The energy from the coronal mass ejection that started Wednesday, interacted with our atmosphere, generating vibrant and vivid northern lights around the world and particularly here across ..read more

A geomagnetic storm arriving Friday evening is expected to produce vibrant northern lights, which will be visible across most of Canada and as far south as Alabama and California. A powerful geomagnetic storm is set to strike Earth's atmosphere on Friday evening, potentially disrupting power grids and radio communications as well as producing vibrant northern lights (Aurora Borealis) across most of Canada and as far south as Alabama and California. According to NOAA's Space Weather Prediction Center, several solar flares and coronal mass ejections have been occurring over the last 72 ..read more

Menacing clouds have been a part of just about everyday this spring, as Montreal has received highly variable weather. Thanks to a fast moving zonal flow across the country, no weather system has hung around for too long. This pattern is expected to persist into next week, with most days having a least a chance for shower or two and perhaps even a rumble of thunder. Warm weather seems to be struggling to take hold this spring in Montreal. While it has not been cold, it certainly has not been warm either. We seem stuck in a very similar zonal pattern with cool rainy days occurring just ..read more

Thunderstorms moving away from Montreal towards the northeast early Tuesday morning. Despite the cooler temperatures at the surface, warm unstable air moving in from the south has generated numerous storms this week in the St. Lawrence Valley. (Valley Weather Photo) I was dodging lightning strikes for the third time this week in Montreal, during the early morning hours Thursday morning. Another round of storms swept across the region, accompanied by frequent lighting and brief, but heavy rainfall.  The scenario has been much the same all week here in the St. Lawrence Valley, a wa ..read more

A spectacular lightning storm woke up many across the Montreal region early Sunday morning, with thousands of strikes occurring between 4-5AM. The photo above was taken at 4AM on Ile Perrot, with nearly constant thunder and lightning for over an hour. Heavy rain accompanied the storms, with 21mm falling at my home. (Valley Weather Photo) A warm front lifting across southwestern Quebec early Sunday morning was the trigger for a cluster of thunderstorms that produced spectacular lightning. Nocturnal thunderstorms tend to be weaker than there afternoon cousins, but these has a little add ..read more

Graupel fell in Montréal late last Sunday evening as a strong cold front crossed the region. Graupel resembles both hail and snow, but is in a category of it's own. It is often called small hail, typically forming on the edges of the summer season in Montreal during October and April. It is very soft, non-destructive compared to hailstones and usually melts away very quickly. Temperatures have been on a roller coaster ride this week, with a wide variety of associated weather. Last Sunday evening, we had a strong cold front cross the region, accompanied by thunder, lightning and even ..read more