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The Yukon phenomenon: record Whitehorse snow nearly 300 percent of normal

Wednesday, April 7th 2021, 3:44 pm - Even taking into account the city's Arctic locale, this past winter was epically snowy for the Yukon capital.

It snowed before Halloween, and it never really stopped snowing.

As of April 5th, there's 70 cm of snow on the ground across Whitehorse, Yukon; for the city of an estimated 33,285, it's a tremendous amount – the most on record for April 4th.

For reference, the snowpack usually peaks around 30 cm of snow, and by late April, the snow base remarkably diminishes to near zero. The sheer resiliency of the Yukon snowpack is quite peculiar.

yukon snow chart

The region was even greeted by a rare atmospheric river back in early December. It's typical to get a meandering jet stream in La Niña conditions, along with above-normal precipitation across parts. The atmosphere essentially behaved like an El Niño for January, limiting the amount of frigid air available in the region; when the active storm track kicked in, excess moisture moved into Yukon. It rarely was too cold to snow.

It's not a record deep snowpack, mind you. That goes to 1972, where 94 cm accumulated on the ground.

Yukon record

With temperatures expected to remain quite chilly over the next couple of weeks, some of the snow might inevitably survive the first couple of weeks of May.

A formidable shot of January-like cold is en route to Alaska and parts of northern Canada this weekend. Although the odds are low, Anchorage might see the chilliest temperature of the season – extraordinarily rare for April.

Expect to see a temperature below -20°C by Saturday a.m.

The city also can't catch a cold break, as it's in the midst of a streak of 161 days recording a temperature below the freezing mark. Yikes.

Contrast this with Windsor, Ont., which is flirting with some early summer vibes. Check out this tantalizingly warm seven-day forecast for the region.

Windsor

Editor’s note: A previous version of this article stated that the population of Whitehorse was 25,000. That information was based on data collected in 2016. A new survey has since been done by the Yukon Bureau of Statistics, which states that the population has now increased to about 33,285.

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