While Manitobans are trying their best to enjoy an early-November heatwave there is also talk of a large storm system that will likely dump upwards of between 20 and 30 cm of snow somewhere on the prairies. The problem, forecasters say, is nobody knows exactly where that snow might end up right now.

"It's kind of the tails to our heads right now," says Brad Vrolijk, a meteorologist with Environment Canada. He says the warm weather over the prairies right now is thanks to a larger upper ridge. "Usually, what follows a large upper ridge is a large upper trough."

It's expected that on Saturday evening and into early Sunday morning the first Colorado Low of the season will arrive. 

"There's a lot of uncertainty with it still," Vrolijk says. "Weather models are just scattershot on where they want to track the low. The consensus at the moment is generally that most of the snow from this system will fall in Saskatchewan and into central Manitoba. We'd see more like snow and freezing rain over Westman, and we'd see more rain in Winnipeg and areas east of us."

However, that system still has lots of time to shift, and Vrolijk says wherever it does shift to, it will definitely leave its mark.

"It is looking like it's going to be a pretty potent system. Wherever the heaviest bans of snow set up it does look like 20 to 30 cm of snow will be possible with it, and it does look like somewhere will get a decent shot at freezing rain. But, like I said, right now there's a huge discrepancy on where that might occur."

Vrolijk jokes that "This is the beauty of my profession: (I can say right now) there's a good chance that somewhere between Swift Current and Lake of the Woods will see 20 to 30 cm, Sunday into Monday. That's the accuracy we're working with at the moment."

What is known right now, is that it will be a "significant system." Vrolijk says forecasters should have a better idea of where exactly the system will track by about Thursday.