A September of contrasts, Summer remains for East US/Canada but Winter hits early for Western Canada

Written by on September 25, 2018 in United States of America with 0 Comments

It’s been a tail of two halves across North America this September so far with summer warmth holding firm over the Eastern US and this warmth has extended up into Eastern Canada too over Western and Central Canada we’ve skipped to late October or November. In fact this could be one of the coldest September’s on record for parts of Alberta, Saskatchewan and Manitoba.

The temperature contrast has been significant even across Canada never mind the continent where it’s been barely above freezing and snowing in Edmonton while it’s been in the 30s for Toronto.

Further east along the shores of Hudson Bay

In recent days, some of the arctic air has filtered down into Quebec, Labrador and the Maritimes!

So why such a contrast? Blame strong upper ridging over Alaska which is driving arctic air southward further east while over in the eastern side of the country, strong ridging over the Middle Atlantic states is pumping warm, humid summer-like air north.

Unusually warm water off the US East Coast has contributed to the unusual strength and persistence of the East Coast high during summer and especially September.

Credit: wxbell

Looks like the chilly pattern pushes south and east and holds well into October.

Credit: Tropical Tidbits

Credit: Tropical Tidbits

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