Severe Thunderstorm Warning Grips Montreal Amid Heatwave Concerns

Severe Thunderstorm Warning Grips Montreal Amid Heatwave Concerns

Severe Thunderstorm Warning Grips Montreal Amid Heatwave Concerns

Hey everyone, just wanted to jump on here and give you a quick but important heads-up about what’s happening with the weather right now in Montreal and much of southern Quebec. As of this Sunday, July 6th, 2025, Environment Canada has issued a severe thunderstorm warning for our area—and honestly, it’s not something to take lightly.

If you’ve stepped outside today, you already know how thick the air feels. It’s hot, it’s humid, and that’s exactly the kind of environment that sets the stage for severe weather. We’re talking about heavy rain, strong wind gusts—potentially up to 110 km/h—nickel-sized hail, and yes, even the chance of localized flooding and tornadoes in some regions. The humidity has been building all weekend, and now a cold front is moving in, and that’s the perfect recipe for powerful thunderstorms.

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Now, the risk isn’t just limited to Montreal. This system stretches from Windsor, Ontario all the way through southern Quebec, reaching as far as Quebec City. But the greatest threat zone today seems to be east of Montreal , where the storm dynamics are expected to peak this afternoon into the evening.

Even if you're not in the direct path of the most severe cells, conditions could change fast. So keep your phones charged, notifications on, and your eyes on the radar. These storms may form suddenly and move quickly, bringing intense rain and flash flooding. And because of how saturated the air is, there's also a risk of storms lingering over the same area longer than usual, which increases the chance of flooding.

Environment Canada has also issued a heat warning —so on top of preparing for storms, it’s crucial to stay hydrated and avoid spending too much time in the heat. Humidex values are hitting around 40 in many parts of southern Quebec, including Montérégie, Lanaudière, Laurentides, and Mauricie.

Looking ahead, the threat isn’t over after tonight. Monday is shaping up to be another stormy day, especially for southern Quebec , with renewed thunderstorm and even tornado potential . So yeah, it’s a good time to double-check your emergency kits, secure anything loose outdoors, and make sure you’ve got a safe indoor spot to go to if warnings intensify.

Bottom line—take this seriously. These warnings aren’t just theoretical; they’re based on real atmospheric dynamics already taking shape across the region. Be safe, stay indoors when needed, and keep those weather alerts handy. We’ll get through this—just stay informed and be prepared.

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