...right now Blatchford averages about 3 -30°C Lows each winter.
The past 2 winters each had 4, while winters like 2016-2017, 2015-2016 & 2012-2013 had none.
In the 1880s the average was around 30, but that fell to 15, then 10, then 5...
https://public.tableau.com/views/EdmontonAlbertaTemperatureHistory/ColdDaysEachWinter?:language=en&:display_count=y&:origin=viz_share_link
The past 2 winters each had 4, while winters like 2016-2017, 2015-2016 & 2012-2013 had none.
In the 1880s the average was around 30, but that fell to 15, then 10, then 5...
https://public.tableau.com/views/EdmontonAlbertaTemperatureHistory/ColdDaysEachWinter?:language=en&:display_count=y&:origin=viz_share_link
...from February 1998 through January 2003 we went 1,835 days (5 years) without hitting -30°C, skipping the winters of 1999-2000 through 2001-2002.
There have been 3 other 1,000+ day gaps: from 1985-1989, 2005-2008 & 2015-2017.
https://public.tableau.com/shared/PNCQC8GSM?:display_count=y&:origin=viz_share_link
There have been 3 other 1,000+ day gaps: from 1985-1989, 2005-2008 & 2015-2017.
https://public.tableau.com/shared/PNCQC8GSM?:display_count=y&:origin=viz_share_link
...flipping that last chart around, when we hit -30°C it's usually on for 1 or 2 days, although January 2020 went 4 days in a row.
The longest -30°C streak was 16 days in February 1887.
https://public.tableau.com/shared/6YRS4MZRR?:display_count=y&:origin=viz_share_link
The longest -30°C streak was 16 days in February 1887.
https://public.tableau.com/shared/6YRS4MZRR?:display_count=y&:origin=viz_share_link
...this blob shows the range of our -30°C season.
Historically the peak was around mid-late January
But since 2000 (the blues & purples) our -30°C Lows have been spread from early December into lousy March.
https://public.tableau.com/shared/6R5GXZRBZ?:display_count=y&:origin=viz_share_link
Historically the peak was around mid-late January
But since 2000 (the blues & purples) our -30°C Lows have been spread from early December into lousy March.
https://public.tableau.com/shared/6R5GXZRBZ?:display_count=y&:origin=viz_share_link
...the last time that we had a *High* hit -30°C was over 6,200 days ago on January 27, 2004 at -30.6°C.
Although last winter came very close on January 14, 2020 at -29.7°C.
https://public.tableau.com/shared/B2BFH9QZ9?:display_count=y&:origin=viz_share_link
Although last winter came very close on January 14, 2020 at -29.7°C.
https://public.tableau.com/shared/B2BFH9QZ9?:display_count=y&:origin=viz_share_link
...as everyone knows the International Airport is cold.
It averages around 10 -30°C Lows each winter.
And so far this winter it has had 0, but 2019-2020 had 10 and 2018-2019 had 17.
https://public.tableau.com/shared/BWFWHQQCM?:display_count=y&:origin=viz_share_link
It averages around 10 -30°C Lows each winter.
And so far this winter it has had 0, but 2019-2020 had 10 and 2018-2019 had 17.
https://public.tableau.com/shared/BWFWHQQCM?:display_count=y&:origin=viz_share_link
...but the loss of -30°C, -35°C & -40°C temperatures isn't just a big city thing.
Rural stations with long histories like the airport, Stony Plain, Ft. Sask & Campsie have all seen fewer extremely cold days in the past century, and since the 1970s.
https://public.tableau.com/shared/5HKYQP5PY?:display_count=y&:origin=viz_share_link
Rural stations with long histories like the airport, Stony Plain, Ft. Sask & Campsie have all seen fewer extremely cold days in the past century, and since the 1970s.
https://public.tableau.com/shared/5HKYQP5PY?:display_count=y&:origin=viz_share_link