Two Tornado Warnings in Under an Hour
Ottawa-area residents and communities across eastern Ontario faced a tense Thursday afternoon as Environment Canada issued back-to-back tornado warnings within the span of a single hour, putting thousands of people across the region on high alert.
The first warning came for the area near Alexandria, a small community roughly 90 kilometres southeast of Ottawa. Before the afternoon was over, a second red tornado warning had been issued — this time for the Gananoque area, located east of Kingston along the St. Lawrence River.
Environment Canada has since ended the Gananoque-area warning, but the rapid-fire alerts served as a stark reminder of how quickly severe weather can develop and escalate across Ontario's summer skies.
What Triggered the Warnings
Severe thunderstorm activity rolling through the region created the atmospheric conditions necessary for tornado formation. Eastern Ontario sits in a corridor that, while not as tornado-prone as the Canadian Prairies, can see significant severe weather events during the summer months — particularly when warm, humid air masses collide with cold fronts moving through the Great Lakes basin.
Tornado warnings — as opposed to watches — are issued when a tornado has been spotted or detected on radar. They represent the highest level of alert, requiring immediate action from anyone in the affected zone.
What to Do During a Tornado Warning
If you're ever caught under a tornado warning in the Ottawa region or anywhere in Ontario, here's what to remember:
- Get inside immediately — a sturdy building is your best protection
- Head to the lowest floor — basements are ideal; stay away from windows
- If you're driving, don't try to outrun it — get out of your vehicle and find a low-lying ditch or sturdy shelter
- Stay informed — keep tabs on Environment Canada alerts via their website or the WeatherCAN app
- Do not go outside until the warning has been lifted
Eastern Ontario's Severe Weather Season
The stretch of land between Ottawa and Kingston has seen its share of severe weather over the years. The 2018 tornadoes that struck Dunrobin and Gatineau remain the most vivid recent memory for many Ottawa residents — those EF2 and EF3 twisters caused widespread damage and left communities without power for days.
Thursday's warnings, while resolved without confirmed touchdowns being widely reported, are a reminder that the region takes severe weather seriously — and that residents should have a plan in place throughout the summer season.
Environment Canada continuously monitors conditions across the province and updates alerts in real time. Residents in and around Ottawa are encouraged to sign up for emergency alerts and follow local authorities on social media for the fastest updates during active weather events.
Source: CBC Ottawa
