Extreme pattern over Arctic produces 50+ degree temperature spread

Extreme pattern over Arctic produces 50+ degree temperature spread
Extreme pattern over Arctic produces 50+ degree temperature spread

اخبار العرب-كندا 24: السبت 20 أبريل 2024 10:00 مساءً

The Arctic is no stranger to wild weather swings. But Friday’s conditions took those extremes to a new level.

An area of high pressure parked over the Yukon drove warmth out of the Rockies into the Northwest Territories. The foothills in the southern N.W.T. saw their first 20°C day slightly ahead of schedule.

Yohin Lake Mould Bay NWT Temp Spread April 19 2024

Yohin Lake Mould Bay NWT Temp Spread April 19 2024

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Yohin Lake, N.W.T., reached 21.5°C on Friday, making it the national hot-spot for the day. Readings usually don’t reach that benchmark until the final few days of April or in early May.

Meanwhile, the jet stream arching over that area of high pressure was able to drive Siberian air into the high Arctic, forcing the temperature in Mould Bay, N.W.T., to drop to -31.8°C.

This 53-degree spread occurred over a range of 1,696 km, which averages out to one degree of warmth per 31 km.

Arctic temp gradient in perspective

Arctic temp gradient in perspective

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If that kind of temperature change occurred along the QE2 in Alberta, temperatures in Edmonton and Calgary would be 10 degrees apart.

A similar temperature gradient over Highway 1 from Calgary to Winnipeg would see a 42-degree spread.

Over in Ontario, the drive from Windsor to Cornwall would see a 26-degree range in readings if temperatures changed at the same rate as we saw over the Arctic on Friday.

Header image courtesy of Donna Sake in Jean Marie River, N.W.T.

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