|Major flooding on the Don Valley Parkway in Toronto overnight. (CBC News)|
The front will usher in very warm and humid tropical air. The temperature in Montreal will reach 22C today but climb all the way to 30C (86F) Thursday through Saturday. There will be a risk each afternoon for thunderstorms as the air will be saturated with moisture.
***A couple of points to remember, stay hydrated in the sudden onset of mid-summer weather, taking care outdoors. Also if you seek relief near or in waterways, remember they are flowing fast from all the rain, and still dangerously cold, in most cases under 13C (55F). At that temperature hypothermia can
occur in minutes.