Why couldn't this happen during Summer?

[Guest]

High pressure is on the way as we end the week, and will be with us right into next week too.

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[Costa Del Fal]

Any answers as to actually why high pressure like this seems to struggle so much to form in summer?

[Wildswimmer Pete]

Any answers as to actually why high pressure like this seems to struggle so much to form in summer?

The decreasing solar activity? Yes - I'll say it: Grand Minimum?

[Methuselah]

Any answers as to actually why high pressure like this seems to struggle so much to form in summer?

I'll go with the cold SSTs in the Atlantic...

[Wildswimmer Pete]

I'll go with the cold SSTs in the Atlantic...

Well, regarding the SST gradient in the Atlantic (discussed here https://forum.netweather.tv/topic/83902-model-banter-moans-and-ramps-autumnwinter-201516/page-7#entry3262698) Summer 1969 wasn't very good, but not as bad as this past "summer".  If I remember correctly the sun was behaving itself back then.

[Methuselah]

Well, regarding the SST gradient in the Atlantic (discussed here https://forum.netweather.tv/topic/83902-model-banter-moans-and-ramps-autumnwinter-201516/page-7#entry3262698) Summer 1969 wasn't very good, but not as bad as this past "summer".  If I remember correctly the sun was behaving itself back then.

Indeed. But the following winter was quite similar to Dr whathisname suggested might happen this time: a jet-stream that often ran along the English Channel??

[Wildswimmer Pete]

Indeed. But the following winter was quite similar to Dr whathisname suggested might happen this time: a jet-stream that often ran along the English Channel??

There wasn't anything particularly unusual about winter 69/70 but we did have a snowy Christmas period but nothing severe.  Early March saw a late cold snap with some snow.  Otherwise pretty wet and windy. Bear in mind I'm quoting from 45-year old memory.

[Methuselah]

There wasn't anything particularly unusual about winter 69/70 but we did have a snowy Christmas period but nothing severe.  Early March saw a late cold snap with some snow.  Otherwise pretty wet and windy. Bear in mind I'm quoting from 45-year old memory.

So am I!

 

I was in Tunbridge Wells for that winter and had a least two monster blizzards, but the cold spells were interspersed with some decidedly mild periods too; so, overall, it was not all that cold...

[Flash bang flash bang etc]

If I say it's because of Global Warming I'll end up having the post deleted. So with much consideration I think I'll concede it is a result of Global Staying-pretty-much-the-same

[Dancerwithwings]

Why couldn't this happen during Summer?.......Also it wouldn't go amiss in Winter 

 

 

 

[MP-R]

Is there a link between prevalence of high pressure cells and strength of the jet stream? The jet stream kicks up a notch in September which sometimes brings about high pressure over the UK in the first half of the month. Is the lack of high pressure over the UK during the summer months a symptom of a generally week jet stream at that time of year? Genuine question.

[Costa Del Fal]

Is there a link between prevalence of high pressure cells and strength of the jet stream? The jet stream kicks up a notch in September which sometimes brings about high pressure over the UK in the first half of the month. Is the lack of high pressure over the UK during the summer months a symptom of a generally week jet stream at that time of year? Genuine question.

My observations seem to be that it often takes low pressure to be forced down towards the Azores to seemingly push a proper HP cell over us otherwise it can never seem to fully make it across. But also stronger jet streams do tend to create larger/stronger lows which do seem to help push HP cells up ahead of them also imo so you may be right somewhat although I am sure there are other complexities attached.