Random Stats

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Re: Random Stats

Post by Canada Goose » Sun Sep 27, 2020 12:56 pm

Glacier wrote:
Mon Aug 31, 2020 10:16 am
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.
It's October 1st with 30.0°C in Pitt Meadows STP & Port Coquitlam City Yard in 1987. ;)
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Re: Random Stats

Post by Glacier » Wed Sep 30, 2020 2:31 pm

I believe that October 6th, 1980 was the latest +30 day in BC history.

Kamloops = 31.3
Spences Bridge = 30.0 (rounded to the nearest 0.5C)
Ashcroft = 30.5 (rounded to the nearest 0.5C)
Merritt = 30.5 (rounded to the nearest 0.5C)
Princeton = 30.2
Nicola Lake = 30.0 (rounded to the nearest 0.5C)

Lytton = 29.9 (which would round to 30 if it were a recorded to nearest 0.5)
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Re: Random Stats

Post by Glacier » Thu Dec 24, 2020 11:30 am

Fun FACT: Christmas 1971 was by FAR the most extreme on record for snow depth. 81 cm in Kamloops!
kamloopssnowdepth.png
Much less snow in Williams Lake that Christmas, however...
wlsnowdepthxmas.png
But even less in Abbotsford. Only 8 white Christmases in the past 65 years...
abbotsfordxmassnow.png
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Re: Random Stats

Post by Abby_wx » Thu Dec 24, 2020 1:14 pm

2016 was a White Christmas here, I will have to find the pics... but I guess YXX had nothing. It's strange that it shows 1 cm for 2012... the ground was bare here that morning, though there was some wet snow during the afternoon.
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Re: Random Stats

Post by Typeing3 » Thu Dec 24, 2020 2:16 pm

Glacier wrote:
Thu Dec 24, 2020 11:30 am
Fun FACT: Christmas 1971 was by FAR the most extreme on record for snow depth. 81 cm in Kamloops!

kamloopssnowdepth.png

Much less snow in Williams Lake that Christmas, however...

wlsnowdepthxmas.png

But even less in Abbotsford. Only 8 white Christmases in the past 65 years...

abbotsfordxmassnow.png
1971 was the snowiest year on record at YVR.

There was an epic 4.5-day blizzard in January dumped 100cm on the city. Snow depth reached 61cm at the airport on the 15th.
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Re: Random Stats

Post by Glacier » Wed Dec 30, 2020 7:58 pm

A Google map showing average Annual Snowfall in BC. I'm really surprised about the lack of snow in Lillooet. Less than YVR or YYJ... https://www.google.com/maps/d/edit?mid= ... 318573&z=7
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Re: Random Stats

Post by Glacier » Mon Jan 25, 2021 1:13 pm

Fun fact: Cranbrook and Fort St. John are the only cities in BC where it's not cloudy more than 50% of the time.
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Re: Random Stats

Post by Glacier » Fri Feb 19, 2021 1:58 pm

Kamloopscolddays.png
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Re: Random Stats

Post by Glacier » Thu Apr 15, 2021 10:31 am

There are 872 gazetted lakes within 50km of Langley City. Obvously, the province uses the word "lake" in the loosest possible way as they label ponds even down to 0.1 hectares as lakes.

https://www.google.com/maps/d/edit?mid= ... sp=sharing
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Re: Random Stats

Post by Glacier » Thu Apr 22, 2021 12:14 pm

Which place in BC is most likely to be the daily provincial hotspot?

HINT: It's in the Okanagan valley. You only get one guess, and if you get it wrong, you deserve to get publicly flogged. Once you make your guess continue reading...

If we look at the 75 main weather stations in BC, over the past 15 years all 5 Okanagan weather stations have been the hottest place in the province at least 14 times. Both Vernon and Summerland managed 14 occurrences, or about 1 day per year.

The last time that Summerland recorded the highest maximum daily temperature in BC was July 1st, 2018 when the temperature was 27.1C (Osoyoos was 2nd that day at 26.5C). For Vernon it was March 12, 2017 when Vernon tied Sandspit with a high 12.0C.

Next we have Kelowna, which has on average about 2 days per year as the provincial hotspot (24 occurrences in the past 15 years). The last time this happened was April 19th, 2019 when Kelowna beat Osoyoos by 0.1C to record a temperature of 19.0C.

Penticton has about 4 occurrences per year (50 in the past 15 years). The last one was March 6th, 2021 when the temperature maxed out at 14.1C. This edged out.... you guessed it... Osoyoos by 0.3C.

And finally, we have Osoyoos which averages 62 days per year as BC's hotspot! The average daily maximum temperature in the past 15 years at Osoyoos has been 16.4C. This is warmer than any other place in Canada. Next is Ashcroft at 15.78C, then Lillooet at 15.76C, and then Lytton at 15.72C, and then Penticton at 15.18C, and then Pitt Meadows at 15.15C.

But having the hottest temperature on average throughout the year does not mean you will necessarily have the most days as the hotspot. Nor does it mean that being the coldest spot means you won't be the hottest spot quite often.

Yes, Osoyoos is #1 in both categories, but many of the coldest places in BC are actually the hottest spot quite often. For example, Fort Nelson averages just 5.48C as the daily high, which is colder than any other place in BC besides Tetsa River and Dease Lake, and yet, it is the hottest place in BC more often than Penticton, Kelowna, Vernon, and Summerland!

Of the 75 weather stations in BC, only 4 have never been the hotspot, and all of them have average highs well above Fort Nelson. In the case of Hope Slide, it averages 11.3C, which is warmer than most places north of Clinton, including Clinton.

The other three are Yoho National Park (AKA Field), Prince George, and Burns Lake. Yes, you've read that right, Prince George is the only significantly sized city in BC that is never the provincial hotspot.

Some other places only managed to record 1 or 2 days in the past 15 years. These include Fort St. James, Revelstoke, Williams Lake, Blue River, and MacKenzie.

At the other end of the spectrum, we have Osoyoos, which was the hotspot over 1000 times in the past 15 years, or about 17% of the time. This is followed by Ashcroft at 12%, Lytton at 8%, Tofino at 6.4%, Lillooet at 5.8%, and Kamloops at 4.5% (286 times in 15 years).

BTW, April is usually a huge winner for Osoyoos, but this year is mostly Squamish, Pemberton, and Lytton.

Also, south coast places are the BC hotspots:
7) White Rock = 4.50%

9) Victoria (Gonzales) = 3.59%
10) Abbotsford = 3.29%
12) Victoria (airport) =3.17%

14) Saturna Island = 2.85%
15) Squamish = 2.62%
16) Agassiz = 2.46%
18) Pemberton =2.24%

22) Pitt Meadows = 1.54%
23) Hope = 1/33%
26) Vancouver =1.22%
31) West Vancouver = 1.00%

33) Nanaimo = 0.81%

62) Whistler = 0.14%

hotspotbc.png
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Re: Random Stats

Post by Glacier » Fri Apr 23, 2021 12:47 pm

What about the reverse of my chart above? Still looking at daily highs (ie. afternoon temperatures), which place in BC has the coldest afternoon temperatures in the province most often?

The top spots are as follows:
1) Tetsa River (a small community west of and higher up from Fort Nelson) = 24% (or about 1 in every 4 days)
2) Yoho National Park (AKA Field) = 16%, or 1 in every 6 days. Note that this is the highest elevation place in BC with a weather station, and is about the same elevation as Silver Star village, so that's why it's so often the coldest spot despite being in the southern interior.
3) Fort Nelson = 15% (this place has the coldest winters in BC, so wins the most cold days in the winter category).
4) Muncho Lake = 8% (also on the Alaska Highway northwest of Fort Nelson)
5) Dease Lake = 6%
6) Masset = 4%

At the other end of the scale these 29 places (of the 75 weather stations in total) have never been the coldest place in BC in the afternoon):

Kamloops
Lytton
Lillooet
Ashcroft
Abbotsford
Penticton
Kelowna
Vernon
Summerland
Comox
Merritt
Salmon Arm
Castlegar
Nelson
Squamish
Bella Coola
Clearwater
Campbell River
Powell River
Port Alberni
Hope
Agassiz
Vancouver
Victoria
Sechelt
Nanaimo
White Rock
Pitt Meadows
Duncan
codlspotbcasdfaf.png
Notice how all the Okanagan weather stations are there EXCEPT Osoyoos! That's because Osoyoos was the coldest place in all of BC on January 26th, 2019 when the daily high was just -1.5C! On this day, Osoyoos was 1 of only 4 stations in BC that didn't rise above freezing. The others were Puntzi Mountain in the Chilcotin (-1.0), Williams Lake (-0.2), and Summerland (-0.1).

Month by month, we can see how Fort Nelson really dominates the winter, but is actually quite warm in the summer.

Fort Nelson is the coldest place in BC in January 42% of the time! Second place Tetsa River is only the cold spot 27% of the time. Yoho is next at 10% of the time. Golden comes in at 6th spot, just behind Muncho Lake and Dease lake.

December reveals a similar situation. Fort Nelson is the coldest spot 43% of the time verses 23% for Tetsa River and 16% for Yoho. The top 6 are in the same order as January.


Outside of these two months, Fort Nelson starts to lose its stranglehold. For February Fort Nelson still leads, but with just 29% of days. This is followed by Tetsa River (23%), Yoho (14%), Fort St. John (9.3%), Muncho Lake (5.0%), and Dawson Creek (4.8%).

By March Tetsa River has taken over by being the coldest spot 36% of days. Fort Nelson comes in 2nd at 15% , Yoho at 14.7%, Muncho Lake at 10.7%, Fort St. John at 9.5%, and Dawson Creek at 7.3%.

By April, Fort Nelson has slipped to 9th behind Tetsa River, Yoho, Muncho Lake, Dease Lake, Fort St. John, Stewart, and Massat. That's right, by April some of the coastal places start showing up in the top 10. By June Fort Nelson is one of the least likely places in BC to be the cold spot, happening only once every 5 years.

In July Prince Rupert is the most likely place in the Province to be the cold spot in the afternoon. This happens on 15% of days. Tetsa River slips to 4th spot, but takes over top spot again in August, and holds this until Fort Nelson takes over again in November.

A few more interesting observations:
- I'm really surprised that Prince George has so few "coldest spot in BC" days (just 1 day every 2 and a half years).
- Cool coastal spots are often the coldest place in BC based on daily highs in summer. More inland places like Abbotsford are never the coldest spot, nor are YXX or YVR. But places like Victoria - Gonzales Heights are. this list of 75 stations does not include most of the lighthouse stations sitting right on the water or on little islands. Also not included is Esquimalt since it's sitting on a dock.
- The places on the coast that often have the coldest day in the province are Masset (4% of days), Prince Rupert, Stewart, Estevan Point, Sandpsit, Tofino, and Port hardy (1% of days).
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Re: Random Stats

Post by Glacier » Tue Apr 27, 2021 10:35 am

While Osoyoos has the hottest average daily maximum, the place that has the highest probability of being hotter than Vancouver (for example) is not Osoyoos.

For three places in BC, Agassiz is the place most often hotter than them. Agassiz is hotter than Bella Coola 76% of the time, 67% of the time over Hope, and 97% of the time over Hope Slide.

Ashcroft is the place most often hotter than Osoyoos, although this only happens 42% of the time (Osoyoos is hotter 58%).

The other four spots where Ashcroft is the most likely to be hotter than them are:
Blue River (96%)
Clearwater (90%)
Clinton (95%)
Kamloops (71%)

Duncan (AKA North Cowichan) is the most likely spot to be hotter than:
Bella Bella = 83%
Campbell River = 82%
Comox = 78%
Malahat = 94%
Nanaimo = 65%
Saturna Island = 73%
Sechelt = 78%
Stewart = 90%
Vancouver = 70%
Victoria = 64%

West Vancouver = 74%

You might be thinking, okay, so Vancouver is only hotter than Duncan 30% of the time, how does that compare to how often it's hotter than Osoyoos?

Well, Abbotsford is next at 32%, then Nanaimo at 33.69%, and finally, Osoyoos at 33.74%. ie. Osoyoos is hotter than Vancouver approximately 66% of the time.

Osoyoos is most likely place to be hotter at 25 of the 74 weather stations, or about 1/3 of all places.

Lillooet is most likely to be hotter than 12 places, basically, every single central interior and peace river station.

Lytton is king for 5 spots including Port Alberni, Whistler, and Terrace.

Nanaimo is top for Powell River and Qualicum Beach.

The last two places that are most likely to be hotter than another location are Pitt Meadows (tops over Squamish) and White Rock, which is top spot against most the spots right next to the ocean like Victoria Gonzales, Tofino, Sandspit, Prince Rupert and Port Hardy.


At the other end of the spectrum, Yoho is the place least likely to be hotter than any particular town at 38 different places. At the extreme end, Osoyoos is hotter than Yoho 99.5% of the time, Ashcroft is 99.2% of the time, and Lillooet 99.1%.

Dease Lake is the least likely hot spot against 2 different places including Vancouver, Victoria, Prince George, and Prince Rupert. Vancouver and Victoria are hotter than Dease Lake 91% of the time.

Tetsa River is the least likely against 8 spots, all in northern BC.

Hope slide is the biggest loser against Hope and Agassiz.
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Re: Random Stats

Post by VanCitySouth » Mon May 03, 2021 10:48 am

That looks a lot like why our winters have seemingly gotten worse and worse

2020-21 snow totals:
Nov-Jan: Teflon and splats
February:
13th - 9.5 cm
14th - 1 cm early AM, then Teflon
24th - 1.5 cm (estimate, melting occurred overnight)

Season: 12 cm, peak depth 9 cm (Feb 13th)
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Re: Random Stats

Post by Glacier » Fri May 07, 2021 6:16 pm

Terrace gets 4 times as many heat warning days in a year as Osoyoos...
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Re: Random Stats

Post by Glacier » Wed May 12, 2021 1:30 pm

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