Random Stats

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Glacier
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Re: Random Stats

Post by Glacier » Tue Mar 17, 2020 1:09 pm

I'm sure that the coast would be similar, although obviously not as hot for the periods less than 1 year, but the years would be similar.

Kamloops Extremes (average maximum temperatures from 1892-2020):

HOTTEST DAY ON RECORD: 16-Jul-41 = 41.7C

HOTTEST 3 DAY RECORD: 15-Jul-41 to 17-Jul-41 = 41.3C

HOTTEST 7 DAY RECORD: 12-Jul-41 to 18-Jul-41 = 38.57C

HOTTEST 15 DAY RECORD: 20-Jul-2009 to 3-Aug-2009 = 36.59C

HOTTEST 30 DAY RECORD: 15-Jul-71 to 13-Aug-71 = 35.25C

HOTTEST 60 DAY RECORD: 21-Jun-2004 to 19-Aug-2004 = 32.15C

HOTTEST 90 DAY RECORD: 27-May-58 to 24-Aug-58 = 31.1C

HOTTEST 180 DAY RECORD: 9-Apr-58 to 5-Oct-58 = 26.72C

HOTTEST YEAR ON RECORD (365 days): 8-Oct-2014 to 7-Oct-2015 = 17.28C

HOTTEST TWO YEARS ON RECORD (720 days): 20-May-2014 to 18-May-2016 = 16.9C

HOTTEST FIVE YEARS ON RECORD (1,826 days): 23-Aug-2011 to 21-Aug-2016 = 16.04C

HOTTEST 10 YEARS ON RECORD (3,652 days): 16-May-2006 to 14-May-2016 = 15.52C


COLDEST DAY ON RECORD: 30-Dec-68 = -28.9C

COLDEST 3 DAY RECORD: 28-Dec-68 to 30-Dec-68 = -27.03C

COLDEST 7 DAY RECORD: 5-Jan-1909 to 11-Jan-1909 = -25.87C

COLDEST 15 DAY RECORD: 31-Dec-1908 to 14-Jan-1909 = -19.97C

COLDEST 30 DAY RECORD: 2-Jan-50 to 31-Jan-50 = -17.61C

COLDEST 60 DAY RECORD: 7-Dec-49 to 4-Feb-50 = -11.81C

COLDEST 90 DAY RECORD: 2-Dec-49 to 1-Mar-50 = -5.94C

COLDEST 180 DAY RECORD: 17-Oct-1916 to 14-Apr-1917 = 1.19C

COLDEST YEAR ON RECORD (365 days): 30-Dec-1915 to 28-Dec-1916 = 11.69C

COLDEST TWO YEARS ON RECORD (720 days): 8-Jul-1915 to 6-Jul-1917 = 12.26C

COLDEST FIVE YEARS ON RECORD (1,826 days): 16-Aug-27 to 14-Aug-32 = 13.18C

COLDEST 10 YEARS ON RECORD (3,652 days): 27-Aug-27 to 25-Aug-37 = 13.54C
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Re: Random Stats

Post by Glacier » Fri Mar 20, 2020 12:07 pm

It's interesting that the highest diurnal temperature variations on record in the Okanagan and Thompson areas were in April and May.

Kamloops:
1) 29.5C on 1941/05/22 (2.2C in the morning, 31.7C in the afternoon)
2) 27.8C on 1910/04/23 (4.4C to 32.2C)
2) 27.8C on 1946/04/25 (2.2C to 30.0C)

Penticton:
1) 28.2C on 1987/04/27 (1.4C to 29.6C)
2) 27.8C on 1931/05/29 (3.9C to 31.7C)

If we go from the previous day's high to the morning low, it's a bit of different picture because a rapid cold fronts coming during the winter, specifically, the end of January 1989 a cold front hit very fast, dropping the temperature in Kamloops 39 degrees overnight...

Kamloops:
1) 38.9C 1989/01/31 (15.9C down to -23C)
2) 30.6C (1965/01/04 (5C down to -25.6C)

Penticton:
1) 32.3C on 1909/05/04 (30.6C down to -1.7C)
2) 31.7C on 1989/01/31 (15.7C down to -16C)
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Re: Random Stats

Post by Glacier » Mon Mar 23, 2020 1:49 pm

It's really interesting how the shoulder seasons have the highest extreme daytime heating in most places, and not the summer when the sun's intensity as at maximum!

For example:

Kleena Kleene (in the Chilcotin):

1) 34C (-5.5 to 28.5) on 1995/09/22.
2) 33C (0.5 to 33.5) on 1983/05/28
2) 33C (4 to 37) on 1983/05/29 (hottest day on record, BTW)
2) 33C (-3.5 to 29.5) on 1987/10/01

That Oct 1, 1987 was an impressive day. Nearby station set the all time temperature swing that day:
Tatlayoko Lake = 33.5C (-6 to 27.5)

Another nearby station (Lunch lake) only rose 30C (from -3 to +27) that day. The all time record here is 35 (-36 to -1), set Dec 7, 1987.

But setting the all time record in the winter is an exception, not the rule. Another example for stations in the area:
Puntzi Mountain:
1) 33.4C (-2.8 to 30.6) set 1974/09/24
2) 32.8C (-2.2 to 30.6) set 1973/05/14
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Re: Random Stats

Post by Glacier » Wed Mar 25, 2020 11:07 am

If we define a storm by the total precipitation of all days in a row with precipitation (I know, maybe not the best definition for coastal stations), then Abbotsford's largest storm was December 19th, 2005 to January 23rd, 2006 when a total of 497.8 mm fell (all of it rain).

The second largest storm on record was November 9th to December 17, 1998 when a total of 463.8 mm fell.

The 39 days in a row of rain in 1998 was the longest on record (just one more day and we would have been required to build an Ark is what I'm told).
The 36 day in 2005/06 was the second longest streak on record.
The 3rd longest streak on record was 32 days from January 6 to February 6, 1953 (444.1 mm fell in this time).

The wettest day on record was November 3rd, 1971 when 95 mm fell in a single day.
The wettest two day period was Oct 16-17, 2003 when 167.4 mm fell.
The wettest three day period on record was Feb 8-10, 1951 when 190.3 mm fell.
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Re: Random Stats

Post by Glacier » Wed Mar 25, 2020 12:04 pm

Here is a new question to ponder. What is the most extreme storm ever recorded in BC as a percentage of average yearly precipitation?

For EXAMPLE, we have Abbotsford getting 497.8 mm over a 46 day stretch in 2005/06. Given the normal of 1483.3 mm for the year, that's a storm equally 34% of the annual precipitation.

I would think that the interior would have much lower numbers because of more even distribution throughout the year. Looking Kamlooops shows that the biggest storm on record was from May 25 to June 6, 1980 with a total of 67.4mm. Given the average for the year of 277.6 mm, that equates to 24% of the year's average.

But then I noticed that in 1975, the west Chilcotin had a MASSIVE rain/snow storm! There weren't a lot of weather stations at the time, and even fewer with normals generated, but we can use Tatlayoko Lake that saw 209 mm between October 31st and November 7th. The annual amount is 435.5 mm, so 48% of the annual precipitation fell in just 8 days!

Some other places in the West Chilcotin were probably well over 50%. For example, Tatla lake recorded 163.6 mm. The station wasn't around long enough to get a normal, but nearby stations average just over 300mm to the west and just under to the east. Between Tatlayoko Lake and Tatla Lake, Charlie Creek (also with no normals) recorded 229.6 mm). Crazy!
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Re: Random Stats

Post by Glacier » Thu Apr 02, 2020 10:20 am

looks like a lot of stations have moved over the years...

http://hydrology.princeton.edu/~sdery/d ... alogue.txt
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Re: Random Stats

Post by Glacier » Mon Jun 08, 2020 1:15 pm

June is the wettest month of the year on average in the southern interior, but in 4 out of 5 years, June is not the wettest month of the year...
wetdrykamloops.png
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Re: Random Stats

Post by Typeing3 » Sun Jun 28, 2020 12:40 pm

Glacier wrote:
Mon Jun 08, 2020 1:15 pm
June is the wettest month of the year on average in the southern interior, but in 4 out of 5 years, June is not the wettest month of the year...

wetdrykamloops.png
Perhaps the start of a long term shift in precipitation patterns in the interior?

We've seen similar shifts on the south coast; January was once by far the snowiest month of the year on average, but has been overtaken by December in recent decades.
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Re: Random Stats

Post by Glacier » Tue Jul 07, 2020 12:52 pm

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Re: Random Stats

Post by Glacier » Tue Jul 14, 2020 1:57 pm

Fun fact: Osoyoos and Ashcroft are known for being dry, but they are in fact more humid in the winter than almost all of Canada, including Lethbridge and Windsor.
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Re: Random Stats

Post by Glacier » Mon Aug 24, 2020 1:35 pm

Hey Goose, I can't remember where we had the discussion about record lows at Puntzi Mountain in the Chilcotin, but I did some research and here are the record lows for the month of August at various Chilcotin weather stations:

Anahim Lake (5 Mile): -10C (Aug 25, 1985)

Anahim Lake: -9C (Aug 22, 1992)


Tautri Creek (on plateau well north of Alexis Creek): -7.2C (Aug 31, 1973)

Tatla Lake: -6C (Aug 26, 1981)
Redstone: -6C (Aug 28, 1984)

Lunch Lake: -5C (Aug 22 & 23, 1992)
Kleena Kleene (all three stations): -5C (Aug 22, 1992)

Big Creek: -4.5 (Aug 28, 1984)
Punzi Mtn (all stations): -4.4C (Aug 19, 1973)
Tatlayoko Lake (both stations): -4.3C (Aug 30, 2008)

Alexis Creek: -3.5C (Aug 28, 1984)




Mosley Creek: -0.5C (Aug 24, 1992, Aug 26, 1995, Aug 31, 1995)
Wineglass Ranch (lowest elevation station at under 500m): -0.5C (Aug 28, 1984)
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Re: Random Stats

Post by Canada Goose » Mon Aug 24, 2020 5:40 pm

Nice job!
Glacier wrote:
Mon Aug 24, 2020 1:35 pm
Anahim Lake (5 Mile): -10C (Aug 25, 1985)
This is the monthly record low in BC.

Otherwise, only 2 stations are still in operation. Ridiculous...
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Re: Random Stats

Post by Typeing3 » Thu Aug 27, 2020 5:06 pm

Question regarding a random stat: What's the latest ever 30C temp recorded in the lower mainland?

Off the top of my head I'm thinking September 28th, when it hit 30.4C at the Pitt Meadows station back in 2017.
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Re: Random Stats

Post by Glacier » Mon Aug 31, 2020 10:16 am

Typeing3 wrote:
Thu Aug 27, 2020 5:06 pm
Question regarding a random stat: What's the latest ever 30C temp recorded in the lower mainland?

Off the top of my head I'm thinking September 28th, when it hit 30.4C at the Pitt Meadows station back in 2017.
I believe that the latest date was September 29th, 1918. Just looking at three stations with long term records:

YXX:
September 28th, 2003 Abbotsford was 31.4C. The day before YXX was also 31.8C. September 28th, 1967 YXX was 30.6, marking the only other +30 day after September 24th. No records exist

Agassiz:
31C September 27th and 28th, 2003.
32.2C (90F), 30.6C, and 30C on the 27th, 28th, and 29th, 1918.

Chillwack:
Obviously the 45.8C temperature on December 15, 2013 was fake, so will just look at September, and the results are:

32C and 31C on September 27th and 28th, 2003;
31.7C on September 27th, 1918.

EDIT to add:

Hope in Sept 2003:
27 = 31.4C
28 = 30.5C
29 = 30.3C

Pitt Meadows was 31.8C on the 28th in 2003, but only 24.6 on the 29th.
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Re: Random Stats

Post by Glacier » Tue Sep 01, 2020 2:28 pm

Top 5 largest lakes within the City of Abbotsford, City of Vancouver, and the City of Kelowna...

ABBOTSFORD:
abbotsfordlakes.png
VANLAKES.png
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