Anatomy of a cold snap

While the polar vortex is an important trigger for this phenomenon, it’s not the only one

I’ve had a couple of really good questions over the last few weeks. One was very timely about the Polar Vortex, and the other was a question about the impact of volcanic activity on our climate, particularly the Tonga volcanic eruption back in January of 2022. Since the polar vortex question is a little more


 (Volodymyr Shtun/iStock/Getty Images)

Prairie forecast: Stormy start in the east, slightly cooler west

Issued Feb. 7, covering Feb. 7 to 14, 2024

You can’t say it has been a strange and interesting winter. First, we saw a wintery end to October, then fall moved back in for most of November and December before we finally saw a big old shot winter in mid-January. Now we have been dealing with spring like conditions over the last two weeks – what’s next? Well, it looks like winter is going to try and make a comeback.



Wind chill and the 2023 Prairie weather summary

Does a -52 C wind chill really mean it is -52 C outside?

I know I promised to dig into a month-by-month summary of last year’s weather across the Prairies, and I will get to it. First, I have received several emails and have overheard plenty of conversations about wind chill over the last week. Some of the emails ask about just what windchill is, but most ask

Many industry sectors depend on the existing power infrastructure and operate without redundancy that could keep them running when the power goes out.

Blizzards are inescapable but their costs aren’t always

The most expensive winter storm damage is largely preventable

Winter storms can easily become billion-dollar disasters as the snow piles up on highways and, in the most extreme examples, collapses roofs and power lines. Yet while cancelled flights and business interruptions can’t be avoided, what turns a snowstorm into a disaster often can be. I have worked for three decades on engineering strategies to



After Earth just experienced its hottest year on record, it may seem surprising to set so many cold records.

Extreme cold still happens in a warming world

Climate instability may in fact be disrupting the polar vortex this winter

Earlier this month, extremely cold Arctic air and severe winter weather have swept southward, breaking daily low-temperature records. These severe cold events occur when the polar jet stream — the familiar jet stream of winter that runs along the boundary between Arctic and more temperate air — dips deeply southward, bringing the cold Arctic air


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Prairie forecast: Warm weather returns

Issued Jan. 24, 2024, covering Jan. 24 to 31

For this forecast period, it looks like our weather pattern will undergo a shift back to the mild pattern we experienced at the beginning of the winter. It also looks like the warm weather will stick around for at least a couple of weeks. The million-dollar question is whether we will see another outbreak of cold arctic air, or will we see an early start to spring? Well, if I knew that answer to that, I would be rich, but I don’t think winter is over quite yet.