A severe thunderstorm swept through Ottawa on Canada Day, delivering 70 millimeters of rain that flooded roadways and knocked out power across the city. The downpour, which began in the early afternoon, forced the cancellation of some outdoor festivities and sent people scrambling for shelter.
Storm Details and Impact
Environment Canada had issued a severe thunderstorm watch ahead of the event, warning of heavy rain, strong winds, and the potential for hail. The storm hit hardest around 2 p.m., with intense rainfall rates of up to 50 mm per hour in some areas. By late afternoon, the city reported widespread flooding on major arteries, including parts of the Queensway and downtown streets. Emergency crews responded to multiple calls for stranded vehicles in underpasses and low-lying areas.
Power Outages and Response
Hydro Ottawa reported that approximately 8,000 customers lost electricity during the peak of the storm, with crews working to restore service through the evening. Fallen tree branches and lightning strikes were cited as the primary causes of outages. The city opened temporary shelters for residents affected by the blackouts.
Canada Day Celebrations Disrupted
The storm dampened Canada Day festivities at major venues, including Parliament Hill and LeBreton Flats. Organizers advised attendees to seek shelter, and some performances were postponed. Despite the weather, many families continued celebrations indoors or under tents. “It’s a bit of a washout, but we’re still having fun,” said one attendee at LeBreton Flats.
Forecast and Warnings
Environment Canada meteorologist Simon Legault noted that the storm system was part of a larger pattern of unstable weather across eastern Ontario. “We saw rapid development of thunderstorms due to the heat and humidity,” he said. The agency maintained a severe thunderstorm watch for the Ottawa region into the evening, with risks of additional downpours and wind gusts up to 90 km/h.
Broader Regional Impact
The storms also affected other parts of Ontario and Quebec. In Montreal, a severe thunderstorm watch was in effect with risks of wind gusts, hail, and even a tornado. Calgary faced a storm risk during its Canada Day celebrations, while a heat dome continued to grip much of Canada, with temperatures exceeding 30 degrees Celsius in many areas.
Safety and Recovery
Ottawa Fire Services reported no major injuries from the storm, but advised residents to avoid driving through flooded roads and to stay clear of downed power lines. The city’s drainage systems were overwhelmed in some neighborhoods, leading to basement flooding in a few homes. Cleanup efforts were underway by evening, with city crews clearing debris from roads.
