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> SW Ontario pseudo-maritime winter climate?, Why SW Ontario rarely gets very cold
knorthern_knight
post Dec 17 2017, 12:41 AM
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I follow the FIM temperature progs, and see the following pattern a lot in winter...

Attached File  temp_2m_f240.png ( 69.08K ) Number of downloads: 0


Note the sub-zero (Fahrenheit) pink and purple areas, and the sheilding effect of the Great Lakes. Really cold air gets moderated as it passes over the Great Lakes. Given that most Arctic outbreaks come in from the NW, areas to the SE of the Lakes are shielded from the worst of the cold. Lake effect snow may look spectacular, but it comes at a price... each gram of water vapour that turns into snow releases 677 calories (2,830 Joules) as latent heat of deposition. Of course, if we get a REALLY cold winter, and the Great Lakes freeze over... watch out.
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Lake effect
post Dec 17 2017, 06:45 AM
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Thank goodness...have you been to Winnipeg in the winter?
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PGM
post Dec 17 2017, 10:33 AM
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QUOTE(Lake effect @ Dec 17 2017, 06:45 AM) *
Thank goodness...have you been to Winnipeg in the winter?


Yes, extreme cold isn't all it's cracked up to be. Give me the snow any day.

This post has been edited by PGM: Dec 17 2017, 10:33 AM


--------------------
Winter 2017-18 stats

First freeze (below 0*C): November 8th
Last freeze (below 0*C):
Days entirely below freezing: 27+
Coldest temperature: -19.7C (January 7th)

First flakes: October 31st
First accumulating snowfall: November 10th
Biggest snowfall: 33cm (December 12th)
Season total: 100cm
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knorthern_knight
post Dec 17 2017, 09:41 PM
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QUOTE(Lake effect @ Dec 17 2017, 06:45 AM) *
Thank goodness...have you been to Winnipeg in the winter?

I grew up in Winnipeg (1955 to 1973). Mosquitos in the summer and cold in the winter. Spring and Autumn were decent.
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