Sorry for the late reply on the details, but it looks like Enkil has covered most of the scenario, but there are some changes.
Apparently, there may be many threats of weak to potent thunderstorms throughout tomorrow starting from the morning hours. This is NOT a guaranteed chance, but rather a a risk to a chance ranging to the usual values, 30-40%. However, we seem to have a "potential" problem for tomorrow evening. This is when, for the moment, the greatest chance exists, which is at 80%, so thus they'll be nocturnal since it's in the evening, if it happens.
The winds should be light in nature ranging from 10-15 km/h. I predict gusts will be anywhere from 20-25 km/h. However, remember that if thunderstorms occur, winds do, indeed, pick up, especially if they are heavy. They will be coming from the south and west, so you can see the the southerly flow drawing in all this moisture and humidity from the Gulf.
The temperature will be absurdly HOT. Maybe even moreso than that of what we've expereinced during France's display. Humidex values will be past 40 tomorrow afternoon and since heat will be retained exponentially tomorrow night, we will have an expected humidex of 38 Celsius. Truly incredible. I'm sure that Environment
Canada will issue humidex advisories tomorrow. As a result, dewpoints will be very high tomorrow and allow great capacities of water vapor content. With humdex values that high, there's going to be a high saturation point.

Our expected high is anywhere from 32-35 C. Excellent, but gives way to favorable conditions.
Now, as Enkil clearly said, this is associated with Dennis, but NOT the system directly. It's mostly to do with typical convection that will give way to these potential storms. The atmosphere will definitely be unstable tomorrow, especially since the sun will be strong already in the morning. Now, Dennis is no longer organized and isn't even considered that type of low pressure system, but it is still an area of low pressure and the same idea applies, especially since the air is going to be humid.
Since it is still a relatively slow moving system, it still is hard to make speculations, but judging that we'll get potential rains on Thursday, we will most likely be more inside the system. Tomorrow night's conditions will be both because of convection and the approaching low.
On the bright side, they usually tend to fluctuate the percentages with the probability of precipitation. However, we must be prepared for anything and, once again, I'm just saying that conditions are FAVORABLE to the developments of thunderstorms, some of which can be severe, but not a guarantee.
In the meantime, I will also be checking with updated satellite imagery, but this is besides the point. As long as we have a hot and humid airmass, you can expect anything. It's going to be "juicy."
Just to note about the chance of precip. When they say "40%" or "30%" or whatever, it doesn't mean that everywhere will see a storm. It means that in any given random location in the forecast area could or will see it, depending on the situation. Just a reminder since these percentage figures are often confused in the wrong sense.
I'll be on the lookout all day tomorrow. It's hard to make predictions, as anything can happen, but I will monitor satellite imagery, as I said, as make a conclusion. I'll also report all the latest conditions. Just be aware till then. It's just one of those days.
Enkil, you might also want to check for rapid cell formation in surrounding areas.
Regards,
Trav.
