09/02/2026
Good morning! We’ve been going over the latest model data this morning, and our detailed forecast released last night remains very consistent with what we’re seeing.
As such, we are sticking with this map as our final forecast for today.
We strongly considered upgrading part of the region to an ‘extreme’ risk (level 5/5). However, while today is shaping up to be a potentially dangerous severe weather day, we believe the threat is still appropriately covered by our ‘significant’ risk.
For us to introduce an ‘extreme’ risk, our criteria generally requires the potential for a tornado outbreak or a derecho. A tornado outbreak is certainly on the table today, but confidence isn’t quite high enough to justify an upgrade.
Some models continue to show storms transitioning fairly quickly into a more linear mode, which would reduce the amount of time individual supercells have to develop and potentially lessen the overall tornado threat.
If we were to introduce an extreme risk zone, it would likely be focused southeast of Lake Huron, southward into the London area and east through the Kitchener area. Models have consistently highlighted this corridor as having the strongest environment for tornado development.
A strong tornado is possible somewhere within this corridor if a supercell develops at the right time and can remain isolated long enough to take advantage of that environment.
In our earlier forecast, we also mentioned some disagreement regarding timing. Models appear to be getting a better handle on that after ingesting data from this morning’s storms.
The slightly later scenario now appears more likely, with thunderstorms expected to develop along a corridor stretching from Lake Huron toward the Lake Simcoe area between approximately 3 and 5 PM.
We’ll also be closely watching for isolated thunderstorms developing ahead of this main corridor, particularly north of the Lake Erie shoreline. Any isolated supercells that develop in this area during the afternoon will likely pose the greatest tornado threat, along with the potential for very large hail and damaging winds.
The main complex of storms is expected to sink south and east through the late afternoon and early evening, reaching the Golden Horseshoe around 6 to 8 PM.
By this point, we expect the primary threat to gradually shift away from very large hail and tornadoes toward more widespread damaging wind gusts as storms become increasingly linear.
However, the tornado threat won’t disappear completely. Brief spin-ups capable of producing an isolated tornado will remain possible within the line as it tracks through the region.
The severe weather threat should come to an end later this evening as the mature complex of storms moves south of the border and into the United States.
Needless to say, it’s going to be quite an active day, and the Instant Weather team will be here to guide you through it safely! The best way to stay safe during severe weather is to stay informed about what is heading your way.
We plan to go live on YouTube within the next few hours, before storms begin developing, and we’ll stay live until the severe weather has tracked out of our region.
Our live stream combines real-time radar analysis with reports from our incredible storm reporting community, helping us quickly identify dangerous storms and keep you informed about what is heading your way.
Subscribe to our YouTube channel (it’s free!) here: https://youtube.com/
If you haven’t already, be sure to download our free Instant Weather app. It provides one of the fastest sources for Environment Canada alerts, along with proactive custom storm notifications from the Instant Weather team that can provide additional advance notice of potentially dangerous weather.
Learn more at InstantWeatherApp.com
Remember, don’t be scared, be prepared! We know severe weather days like this can cause a lot of anxiety for some members of our community. Being prepared and staying informed can make it much less stressful when storms approach your area.
We’ll be here with you throughout the event. ❤️
See you on YouTube soon!
- Brennen
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