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Awesome, thanks. Definitely need the snow cover for that sustained cold.
Hope to see another cold spell like that at some point in the future.
It could happen, if the right kind of blocking occurs in the right context ...
As an after-effect of Omarama's snow cover ... this is from the August 1968 summary - plus my comments in brackets at the end.
" ...Temperatures: Temperatures were 1F-3F above average over most of the South Island (*), highest departures being in inland districts. They were also 1F-2F warmer than usual in some western and inland districts of the North Island. Elsewhere they were slightly above average. The coldest period was from the 14th-20th, with southerly to easterly winds over the North Island. [(*) However at Tara Hills, Omarama, the monthly mean was down 1.4F, the result of the July snow cover being slow to melt]."
Are you able to find data for Alaska? I've been told that December of 1917 was the coldest on record. I would guess that there weren't many stations back then, but perhaps Fairbanks.
Not sure where I can find monthly data all the way back to 1917, but according to Wikipedia Fort Yukon averaged -40/-58 (in F, -40/-50 in C) that month:
The coldest month ever in Oklahoma City was January 1930, with a mean temperature of 23.2°F (-4.9°C).
The coldest month I could find in the contiguous U.S. was February 1936 in Glasgow, MT, with a mean temperature of -15.8°F (-26.6°C). That is a whopping 35.0°F (19.4°C) below normal.
Not sure where I can find monthly data all the way back to 1917, but according to Wikipedia Fort Yukon averaged -40/-58 (in F, -40/-50 in C) that month:
^^ Very interesting how Alaska has had lots of warm up in December, but not so much in January (2012 was the coldest month on record). By contrast, here in BC, December hasn't warmed at all in the past 100 years while January has seen a huge increase in temperature.
Are you able to find data for Alaska? I've been told that December of 1917 was the coldest on record. I would guess that there weren't many stations back then, but perhaps Fairbanks.
It's on the NCDC Data Publication page
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