Portions of northeastern Ontario (at the same latitude as southern
England), about a six hour drive north of Toronto, are experiencing
extreme cold far worse than that "down south" where I live. Last night
"up north" the low was minus 35C. The high today will only be aroud
minus 25C. The low tonight will approach minus 35C again with a minus
40 or lower windchill.

When the weather is this cold, ice crystals fill the air.

Southern Ontario rarely gets this cold.

Bob