Summer 2020

Weather reports, analysis etc. pertaining to Southern BC.
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Re: Summer 2020

Post by Canada Goose »

PortKells wrote: Thu May 28, 2020 11:05 am So in conclusion, yes I know that hot and dry ANOMALIES are what are predicted, and I am stating that hot and dry ANOMALIES have become the new normal.
The new normal? Not yet in my opinion.

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Re: Summer 2020

Post by Typeing3 »

PortKells wrote: Thu May 28, 2020 11:05 am I am pretty new to weather and fairly green in many terms, but I can assure you I don't need to be instructed on what anomalies are. Sometimes when we type things on the phone, they aren't 100% clear. However, others here seem to have understood what I meant both times. So in conclusion, yes I know that hot and dry ANOMALIES are what are predicted, and I am stating that hot and dry ANOMALIES have become the new normal.
Hotter, yes. But drier, no.

At YVR...overall summer and yearly precipitation averages lower the further back we go in time. Check the 1991-2020 averages posted by Canada Goose in the other thread. YVR stats show the 1941-1970 climate normals were the driest of the past six updated 30 year climate normals.

YVR has gone from averaging ~1020mm of rain annually per 1941-1970 normals to averaging ~1150mm of rain annually per 1991-2020 normals. Warmer and wetter anomalies are the new normal.
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Re: Summer 2020

Post by Abby_wx »

I remember looking into this a while back; my conclusion was that YVR had been getting wetter while YXX was getting drier over the same time span. This was on an annual basis -- I don't remember the seasonal numbers.
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Re: Summer 2020

Post by Canada Goose »

North America is quite larger than Europe, which means that it can have a much more diverse pattern. Obvious right away are the warmer than normal conditions over Alaska, western Canada, and the western United States. All three models tend to agree on that, with the American CFS model pushing the west coast warmth further north.

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Re: Summer 2020

Post by Glacier »

Typeing3 wrote: Sun May 31, 2020 11:12 am Hotter, yes. But drier, no.

At YVR...overall summer and yearly precipitation averages lower the further back we go in time. Check the 1991-2020 averages posted by Canada Goose in the other thread. YVR stats show the 1941-1970 climate normals were the driest of the past six updated 30 year climate normals.

YVR has gone from averaging ~1020mm of rain annually per 1941-1970 normals to averaging ~1150mm of rain annually per 1991-2020 normals. Warmer and wetter anomalies are the new normal.
The thing that we forget is that the 70s, 80s and especially the 90s were extremely wet, the wettest decades on record for most stations, so it appears that we have become drier because our memories are comparing the past two decades against the wettest 30 years on record.

Also, because the 80s and 90s were wet, the summers were also cooler during the day relative to past and current decades, at least in the interior.
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Re: Summer 2020

Post by Typeing3 »

Courtesy of "YVR Weather Records" on twitter.
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