The Weather Network – Disappearing stream recorded on video in the middle of historical cold in BC

Tuesday, December 28, 2021, at 15:45 – A fantastic example of frazil ice was recorded in Squamish, British Columbia, when brutally cold temperatures covered the region.

Arctic air engulfing parts of western and central Canada has brought record-breaking cold weather. Vancouver experienced -15.3 ° C on December 27, which is the coldest temperature the city has seen in half a century.

Vancouver usually has a high temperature of 6 ° C and a low temperature of 0 ° C in the last week of December. Squamish in the vicinity experienced a high temperature of -11 ° C and a low temperature of -15 ° C on December 27, and some people noticed that this caused a conspicuous behavior in the snow.

A video posted to The Weather Network by Brad Atchison shows an ice-cold stream forming and then quickly disappearing into Squamish. The scene is like watching a video play backwards, and meteorologists say the biting cold weather is the culprit.

Jessie Uppal, a meteorologist at The Weather Network, explains that Atchison captured an amazing example of frazil ice, which is a rare phenomenon that occurs when there are extremely cold temperatures near free-flowing water bodies, such as streams or rivers.

“The air temperature around these streams is well below freezing and much colder relative to the water. These small bodies of water are supercooled, which means that the water temperature drops below its normal freezing point, but remains like a liquid,” explained Uppal.

“This is where we begin to see the formation of ice crystals on the surface of the water. These ice crystals are somewhat soft and have little structure to them. Since the water flow is constant and turbulent, the soft ice crystals that form are not able to freeze completely. With less turbulent streams, more ice is able to accumulate faster, creating the illusion of a disappearing river. “

Forecasts say the bitter cold will begin to disappear on Wednesday as temperatures begin to rise toward seasonal values.


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