Climate Stats: Vancouver

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Re: Climate Stats: Vancouver

Post by Typeing3 » Tue Feb 16, 2021 7:48 pm

Snowiest Days in Vancouver History GRAPH.PNG
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Re: Climate Stats: Vancouver

Post by Typeing3 » Tue Feb 16, 2021 8:38 pm

Snowiest Months in Vancouver History GRAPH.PNG
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Re: Climate Stats: Vancouver

Post by Typeing3 » Tue Feb 16, 2021 8:51 pm

Coldest Months in Vancouver History GRAPH.PNG
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Re: Climate Stats: Vancouver

Post by Glacier » Wed Feb 17, 2021 10:17 am

Typeing3 wrote:
Tue Feb 16, 2021 7:48 pm
Snowiest Days in Vancouver History GRAPH.PNG
Nov 9th, 1911 is a VERY early snowfall, especially one that large!
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Re: Climate Stats: Vancouver

Post by Typeing3 » Sun Feb 21, 2021 6:26 pm

Days per year with a high temp at or below -2c in Vancouver history.PNG
Days per year with a high temp at or below -4c in Vancouver history.PNG
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Last edited by Typeing3 on Mon Feb 22, 2021 9:46 pm, edited 1 time in total.
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Re: Climate Stats: Vancouver

Post by Abby_wx » Sun Feb 21, 2021 10:09 pm

Extreme cold seems rare after 1996. Glad I was alive to experience the winters in the 80's and 90's, since it doesn't look like they'll be coming back anytime soon.
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Re: Climate Stats: Vancouver

Post by Glacier » Mon Feb 22, 2021 9:45 am

Typeing3 wrote:
Sun Feb 21, 2021 6:26 pm
Days per year with a high temp at or below -4c in Vancouver history.PNG
Jan 1950 sticks out like a sore thumb, but I think you need to combine Dec with Jan of the next year, which would give you 9 for 1969 given that the cold weather started in December.

Fun fact, 70% of the all -30C days in Kamloops that have occurred in the life of my parents (born in the 1940s) occurred in just two winters -- 1949/50 and 1968/69. It would probably be similar for Vancouver if we adjusted the threshold right.
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Re: Climate Stats: Vancouver

Post by Typeing3 » Sat Jul 17, 2021 4:48 pm

Consecutive days with no measurable precip in Vancouver (1898-present):


1. Jun 14 - Aug 10, 1951 (58 days)

2. Jul 18 - Sep 8, 1986 (53 days)

3. Jul 2 - Aug 12, 1960 (42 days)

4. Jul 8 - Aug 17, 1990 (41 days)

5. Jul 13 - Aug 21, 1936 (40 days)

6. Jul 12 - Aug 13, 1979 (33 days)
6. Jun 29 - Jul 31, 2013 (33 days)

8. Jun 30 - Jul 31, 1985 (32 days)
8. Jul 4 - Aug 4, 2010 (32 days)
8. Jul 10 - Aug 10, 2018 (32 days)
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Re: Climate Stats: Vancouver

Post by Canada Goose » Mon Aug 09, 2021 3:07 pm

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Re: Climate Stats: Vancouver

Post by Typeing3 » Fri Aug 13, 2021 3:40 am

Have summers gotten drier? As we know, our climate experiences a Mediterranean-like precipitation pattern with large (and sometimes extreme) variation from winter to summer. Although some anomalously dry June-September periods have occurred over the period of record, there is little indication of any meaningful increase or decrease in frequency for the Vancouver area. This could very well change in the future, but the signal is seemingly muted for now. At least according to the data.

*Note: First graph is just YVR data over the entire period of record at the station (1937-2020).
**Note2: For the second graph, I used the old Steveston station data (1896-1936) as the predecessor to the YVR data (1937-2020), since it's closer (7km) to sea island than the old downtown station (11km). 1907 data is from the old Ladner station (closest station to Steveston) as precipitation records that year were very dubious.
***Note3: Lastly, for the third graph, I used the Vancouver PMO (downtown) station data (1898-1936) as the predecessor to the YVR data (1937-2020). Steveston station data is used for years with missing records (Jun/Aug/Sep 1899 and all four months in 1904). While there is a fairly evident downward trend in rainfall when using this station as a predecessor to YVR, that can be easily explained with location difference (11km further north = greater precipitation averages due orographic effects) rather than an indicator of elevated summer drought frequency over the period of record.
June - September precip at YVR 1937-2020.PNG
June - September precip at Steveston & YVR 1896-2020.PNG
June - September precip at Vancouver PMO & YVR 1899-2020.PNG
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Re: Climate Stats: Vancouver

Post by Typeing3 » Sat Sep 18, 2021 1:10 am

July&August precip at YVR.PNG
July&August precip at Steveston & YVR.PNG
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