Has it all be diverted north due to the jet stream or are there just fewer
and/or weaker weather fronts forming in the atlantic this year? I notice when
has front has crossed us in the last month or so its been a pretty feeble
affair.

On 22/06/2018 11:03, wrote:
Has it all be diverted north due to the jet stream or are there just fewer
and/or weaker weather fronts forming in the atlantic this year? I notice when
has front has crossed us in the last month or so its been a pretty feeble
affair.



I monitor lows coming across the Atlantic and the associated winds, for
surge effects up the English Channel and its months since the last one
affecting the approaches and then the channel.
I was researching historic marine flooding examples in the archives of
the lalocal paper yesterday.
In passing , mention of 200mph wind affecting a Boeing 707 and rapid
crossing, 19 Oct 1959 edition, the term jetstream had probably not been
coined then , as it seemed an unexpected event.

N_Cook wrote:

On 22/06/2018 11:03, wrote:
Has it all be diverted north due to the jet stream or are there
just fewer and/or weaker weather fronts forming in the atlantic
this year? I notice when has front has crossed us in the last month
or so its been a pretty feeble affair.



I monitor lows coming across the Atlantic and the associated winds,
for surge effects up the English Channel and its months since the
last one affecting the approaches and then the channel. I was
researching historic marine flooding examples in the archives of the
lalocal paper yesterday. In passing , mention of 200mph wind
affecting a Boeing 707 and rapid crossing, 19 Oct 1959 edition, the
term jetstream had probably not been coined then , as it seemed an
unexpected event.


The existence of what we now know as the 'jet stream' was discovered in
the 1920s. From what I have read, use of the term 'jet stream' was
begun in 1939 by a German meteorologist, Heinrich Seilkopf. I can't
vouch for the accuracy of that, though.

The jet stream was well known by the time of the second world war. The
Japanese made use of it to fly balloons carrying bombs from Japan to
the USA. The only people killed by enemy action in mainland USA during
WW2 were victims of one of those bombs.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.
https://peakdistrictweather.org
Twitter: @TideswellWeathr

On Fri, 22 Jun 2018 12:48:21 +0100
N_Cook wrote:
On 22/06/2018 11:03, wrote:
Has it all be diverted north due to the jet stream or are there just fewer
and/or weaker weather fronts forming in the atlantic this year? I notice when

has front has crossed us in the last month or so its been a pretty feeble
affair.



I monitor lows coming across the Atlantic and the associated winds, for
surge effects up the English Channel and its months since the last one
affecting the approaches and then the channel.

Is that down to ocean temperature, air currents or nobody knows?

On Friday, 22 June 2018 11:03:30 UTC+1, wrote:
Has it all be diverted north due to the jet stream or are there just fewer
and/or weaker weather fronts forming in the atlantic this year? I notice when
has front has crossed us in the last month or so its been a pretty feeble
affair.

Worth noting that it's not been just the south. Apart from a midweek glitch in the Edinburgh area it's also been very dry up north. Places like Stornoway have had precious little for about a month now. Starting to make life difficult when they have little storage capacity and rely more on a steady week to week feed.
Luckily it's the last day of school today, so the holidays look like getting off to a good start.

On Friday, June 22, 2018 at 4:46:14 PM UTC+1, Mike Waller wrote:
On Friday, 22 June 2018 11:03:30 UTC+1, wrote:
Has it all be diverted north due to the jet stream or are there just fewer
and/or weaker weather fronts forming in the atlantic this year? I notice when
has front has crossed us in the last month or so its been a pretty feeble
affair.

Worth noting that it's not been just the south. Apart from a midweek glitch in the Edinburgh area it's also been very dry up north. Places like Stornoway have had precious little for about a month now. Starting to make life difficult when they have little storage capacity and rely more on a steady week to week feed.
Luckily it's the last day of school today, so the holidays look like getting off to a good start.

It used to be a major issue on Scilly. It got to the state where 1 year they had to import water from Penzance on the Scillonian III.

They've now got a desalination plant, the output of which they mix roughly 50/50 with the ground water supply.

Graham
Penzance (Very drying breeze the last couple of days adding to the effect of largely unbroken sunshine.)

On 22/06/2018 11:03, wrote:
Has it all be diverted north due to the jet stream or are there just fewer
and/or weaker weather fronts forming in the atlantic this year? I notice when
has front has crossed us in the last month or so its been a pretty feeble
affair.



My halfpennyworth.
I have an increasing amount of faith in the reasoning and implications
in this paper

https://www.researchgate.net/profile...tal-Storms.pdf

3 elements of NOAA SST anomaly gradients over the North Atlantic
correlating with storms for the UK.
My enumeration of it, came back to life for Storm Hector and has now
dropped back again.
For the current month prognostications , roughly the SST anomaly
gradient along the 50th parallel.
Just sampling every 10 days or so (NOAA output only Mon and Thur anyway)
from the present backwards, looking only at the Norwegan Sea part of the
very North Atlantic. I've gone back to October 2017 and nothing but
"yellow and orange" + territory on these outputs

http://www.ospo.noaa.gov/Products/ocean/sst/anomaly/

If the eastern end SST +anomaly of the 50th is an attractor for UK
storms (relative to the Grand Banks) then the storms could be attracted
north of the UK, if this mechanism was valid more widely.
Obviously its a gradient required for this and I've ignored (for this
first pass) the situation at the Grand Banks which has been a lot more
variable over those months , but perhaps warrants further study.

On 22/06/2018 17:23, Graham Easterling wrote:
It used to be a major issue on Scilly. It got to the state where 1 year they had to import water from Penzance on the Scillonian III.

They've now got a desalination plant, the output of which they mix roughly 50/50 with the ground water supply.

Is the desalinated water fit for drinking?

I was on Scilly in July 1989 and I believe they were starting to import
water during that hot summer. There were notices everywhere begging the
tourist to restrict water use. The islands were super parched.

One of the mornings I was there, the people of St Mary (plus tourists
like myself) awoke with the biggest hangover in history. They'd just
celebrated the Gentry Eagle winning the Virgin Atlantic Challenge
Trophy. The boat was in the habour and we all got to have a little trip
in it. Richard Branson put on a big party and why would you refuse free
booze. I was only a t'young lad.

Shame he has turned out to be such a nasty tax evading etc etc.........

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

On Sunday, June 24, 2018 at 11:49:26 AM UTC+1, Nick Gardner wrote:
On 22/06/2018 17:23, Graham Easterling wrote:
It used to be a major issue on Scilly. It got to the state where 1 year they had to import water from Penzance on the Scillonian III.

They've now got a desalination plant, the output of which they mix roughly 50/50 with the ground water supply.

Is the desalinated water fit for drinking?

I was on Scilly in July 1989 and I believe they were starting to import
water during that hot summer. There were notices everywhere begging the
tourist to restrict water use. The islands were super parched.

One of the mornings I was there, the people of St Mary (plus tourists
like myself) awoke with the biggest hangover in history. They'd just
celebrated the Gentry Eagle winning the Virgin Atlantic Challenge
Trophy. The boat was in the habour and we all got to have a little trip
in it. Richard Branson put on a big party and why would you refuse free
booze. I was only a t'young lad.

Shame he has turned out to be such a nasty tax evading etc etc.........

--
Nick Gardner
Otter Valley, Devon
20 m amsl
http://www.ottervalleyweather.me.uk

Yes, but they do mix it with groundwater. They upgraded the plant a few years back, details of the system here
https://www.kirton.co.uk/water-treat...m-isles-scilly

I think the previous desalination plant was built in the '90s (though I could be wrong). Certainly in the 70's & 80's there were severe water restrictions on Scilly most years. All a thing of the past now.

Another cracking day https://www.atlanticcottageholidays....m-sennen-cove/

The long run of biggish swells has come to an end.

Graham
Penzance

I was on Scilly in July 1989 and I believe they were starting to import
water during that hot summer. There were notices everywhere begging the
tourist to restrict water use. The islands were super parched.


Photo here from July 1989, taken from Skybus. It's looking across from near Lands End to Sennen & Gwenver. Everything was brown. One of the driest summers ever in this part of the UK.

I actually took it for the cliff top fog. In retrospect it's a good image of the drought.

Graham
Penzance