On Wednesday Montreal, the Laurentians and the Monteregie region were hit with a massive thunderstorm and even some hail.
And it looks like it's going to happen again today in Montreal which is horrible news for anyone attending Osheaga.
According to Environment Canada, the current conditions are favorable for dangerous thunderstorms, damaging wind gusts, heavy rain and large hail.
And as if that wasn't bad enough there is also a small risk of tornadoes.
"Remember, severe thunderstorms can produce tornadoes" - Environment Canada
Be careful out there today.