Severe thunderstorm watches are in effect for parts of southern Alberta, less than 24 hours after storms fired up across the region.
Environment Canada is warning the public to be on alert for damaging winds and heavy rain.
The storms are expected to roll in Tuesday afternoon, but dark clouds have already been spotted.
According to Chris Scott, a meteorologist at The Weather Network, the big story this week will be the rain.
Up to 150 mm is possible in some places by Friday.
On Monday, thunderstorms prompted tornado warnings for Wheatland and Newell counties.
While no tornado warnings have been issued for Tuesday's storms, there is an isolated chance that a twister will develop during the afternoon or evening.
Should threatening weather approach, take cover immediately.