The longer nights and cooler mornings  have allowed some trees to begin showing their colours across Southern Quebec. Despite the forecast for a cool Labour Day weekend in Montreal, it looks like we are in for a warm and wet fall, just as the entire year has been. (Valley Weather Photo) Powered by the remains of tropical storm Debby, Montreal has added another dubious weather record to the books, the wettest August dating back to 1871. With just a few days left in August and meteorological summer, Trudeau Airport sits at 229.3mm of precipitation, just over 10 inches of rainfall f ..read more

Another rainbow in the skies over Montreal as our wet summer continues. Skies will begin to slowly clear on Thursday, with a return to more summer-like temperatures this weekend as highs rise into the middle and upper 20s. (Valley Weather Photo) Our super wet summer persists across southern Quebec, with another 25-50mm of rain falling on the region since Monday. The culprit this time, a potent upper level low that is slowly drifting across the region with showers, thunderstorms and unseasonably cold temperatures. It has provided Montreal with a very early taste of fall weather. I have ..read more

Laval, Québec on Friday August 9. More rounds of showers and thunderstorms are possible on Sunday, with 30-40mm falling on already saturated ground across the Montreal region. The summer of 2024 is quickly becoming know as the summer of the flood. Major flash flooding has now occurred on two separate occasions in both Toronto and Montreal as well as across Vermont and New York. (Association des Pompiers de Laval) Special Weather Statement in effect for southern Quebec and eastern Ontario for 30-40mm of rain from Sunday afternoon into Monday morning. Some flooding and water accumulatio ..read more

After all the flooding in Montreal last weekend, it was nice to see the sun this week. Unfortunately the airmass is quite warm and humid, and has produced isolated thunderstorms. There has also been some smoke and haze from western wildfires. Severe Thunderstorm Watch in effect for metro Montreal. We have a risk of isolated strong thunderstorms Thursday afternoon, with heavy rain, hail and gusty winds possible through sunset. The clean up continues in Montreal after the historic rainstorm last week associated with tropical storm Debby. Highway 13 finally reopened Thursday morning, aft ..read more

The service roads and ramps off Highway 40 at Cote-Vertu were once again closed this morning due to major flooding. The roads were closed during the evening commute as well, as more heavy rain hit the city. In all between 100-175mm of rain fell in Montreal Friday, an historic amount of rain for one day. (Photo: Oliver Sutton) A spectacular rainbow has just appeared in the eastern sky here on Ile Perrot after an historic weather day. Tropical Storm Debby dumped two months worth of rain on the region in just a few hours. At my home on Ile Perrot, 175.8mm (6.9 inches) of rain since the p ..read more

Heavy rainfall warning in effect for southern Quebec. Rainfall totals may exceed to 100mm. The first wave of precipitation has delivered major flooding to parts of the Montreal region Friday morning. Nearly 65mm of rain fell from the remains of hurricane Debby, flooding much of the same area affected by Beryl last month. Sections of Highway 40, including ramps and service roads were closed at Highway 13 and Cote-Vertu. The result was traffic chaos during the morning commute. If you can work from home today do so. More rain is on the way this afternoon, and totals should easily surpass the all ..read more

Tropical storm Debby made another landfall in South Carolina early Thursday morning. The storm center was located 100km west of Myrtle Beach, moving northwest at 11km/h. The remains of Debby will move into New York State on Friday, bringing heavy rain to Montreal. (Photo: Stephen B. Morton) Heavy rain warning has been issued for southern Quebec and eastern Ontario including metro Montreal for 50-100mm of rain tonight through Saturday morning. Flood Watch for upstate New York including the St. Lawrence Valley. The remains of tropical storm Debby will impact southern Quebec and Ontario ..read more

Flash flooding in Charleston, South Carolina, after tropical storm Debby produced over 300mm of rain on Tuesday. Debby is expected to bring heavy rain to Montreal by Friday. (Photo: Henry Taylor)  Special Weather Statement issued for Montreal, for heavy rainfall in association with the remains of tropical storm Debby, expected by Friday. Tropical storm Debby, located in the Atlantic Ocean, 85km southeast of Charleston, South Carolina at 11am Wednesday morning, is slowly meandering northeast at 7km/h. The storm has brought historic flooding to portions of northern Florida, southea ..read more

Hurricane Debby produced significant fresh water and surge flooding in Florida on Sunday, including at Fort Myers beach shown above. (Photo: Andrew West) Historic rainfall expected... Hurricane Debby moved inland Monday morning across the Big Bend area of Florida's Gulf Coast. Debby reached hurricane status briefly overnight, with 80mph (129km/h) winds. Storm surge flooding started on Sunday from Fort Myers Beach northwards across Tampa Bay, Cedar Key and points north. A storm surge of up to 10 feet were observed at many locations, with coastal infrastructure and roads under water. As ..read more

The hot and humid weather during the past week across our region has been broken at times by occasional showers, thunderstorms and even rainbows! Heat Warning in effect for southern Quebec Widespread heat warnings and advisories are in place for much of southern Ontario and Quebec as well as a large part of the northern and central US, including both the Champlain and St. Lawrence Valley. The combination of very warm temperatures and high humidity will push humidex values into the upper 30s for many, with even a few 40C readings. Montreal managed a humidex reading of 40C (104F) on Wed ..read more