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Col
  • Col
  • Advanced Member
22 June 2017 18:46:21


To shift away from some of the autumnal posts, I'm surprised the UKMO hasn't got a mention. It looks completely different from the GFS after 72h and at a glance, a bit warmer!

At T96 the UK is stuck underneath a Col with perhaps high pressure beginning to build to our North.


 

Originally Posted by: yorkshirelad89 


Hey, I'm not that fat!!


Col
Bolton, Lancashire
160m asl
Snow videos:
http://www.youtube.com/channel/UC3QvmL4UWBmHFMKWiwYm_gg
LA2B MeridFlowEuro09
22 June 2017 23:54:16

At the moment the weather outlook if you believe the latest UKMO 12z run updated charts, then most of us it looks cool and wet with Low Pressure over Northern UK, while Southern UK is expected to be pleasantly warm with mixture of cloudiness and some sunny spells as well, the UKMO looks fine for Monday the 26th as well and also for Tuesday 27th June and for Tuesday today's GFS and ECMWF still have that wild looking Low Pressure, on the 12z GFS it has indeed reduced chance of coolness with warmer Thundery showers being more likely on Tuesday and Wednesday.  This the UKMO has not supported today but in yesterday's 12z run it looked like today's 12z GFS with trof's forming for the 27-28th June.


Next few days this prediction is still can show further divergence from previous GFS and EMWF predictions they showed the extreme deep Low Pressure for said period and the GFS is just today starting to side towards the UKMO less cool solution with trof's and mild sector's showing they can reduce the potency of this Low Pressure, next few days they will pick up more sensible outputs.


Climate is warming up, Scotland and N Ireland and North England still often gets some Winter frost, ice and snow, November to March, but the SE and South UK including S Central England and Wales, together with the West and North through the year, they sometimes get more rain than London and S SE England, where some longer dry fine spells without much heavy rain is seen every year.

The North Atlantic Sea often gets some much Colder Wintry conditions from November to March Months, and Mild SW and South winds tend to be more frequent over the East and SE of North Atlantic Sea, as the Azores High tends to stay in charge. 

With this warmth and heat, the Central and South UK has become mostly free of snow and frost.
picturesareme
23 June 2017 00:37:04


Evening GEFS update appears to follow this morning's 00z suite. 



Originally Posted by: Brian Gaze 


A little dip, then a rise, followed by more extended dip, and then a much bigger rise...


I'm reckoning that either that bigger rise will extend or the deeper dip will decrease.

bledur
23 June 2017 03:34:25

Well on the cool side of the jetstream by the middle of next week


Jetstream ForecastJetstream Forecast

cultman1
23 June 2017 07:07:09
is the jet stream likely to remain well south of the British Isles for a prolonged period thereby keeping an extended cooler spell or could this be interpreted as a temporary blip?
bledur
23 June 2017 08:06:37

is the jet stream likely to remain well south of the British Isles for a prolonged period thereby keeping an extended cooler spell or could this be interpreted as a temporary blip?

Originally Posted by: cultman1 


 Like any forecast, beyond 5-6 days becomes uncertain, but most forecasts give the more changeable weather going on into July That chart of the jetstream could at best just keep it cool and showery or at worst some fairly active for the time of year low pressure systems causing more general wind and rain.

Russwirral
23 June 2017 09:27:47
Its June... its Britain...

That can only mean one thing... Greenland High :)


yorkshirelad89
23 June 2017 12:10:59

Ok I'll concede defeat now, it looks as though we will have a very unsettled end to June, it looks as though a low pressure system will form over the UK and deliver some cool weather.


Could be quite blustery at times too as the low pressure moves east and intensifies as it bumps into the hot air over the continent. Its uncertain as to whether this will be a prolonged cooler spell however.


Even the best Summers have their blips 

http://www.wetterzentrale.de/maps/archive/1976/noaa/NOAA_1_1976073100_1.gif


 


Hull
Brian Gaze
23 June 2017 12:14:48


Ok I'll concede defeat now, it looks as though we will have a very unsettled end to June, it looks as though a low pressure system will form over the UK and deliver some cool weather.


Could be quite blustery at times too as the low pressure moves east and intensifies as it bumps into the hot air over the continent. Its uncertain as to whether this will be a prolonged cooler spell however.


Even the best Summers however, have their blips 

http://www.wetterzentrale.de/maps/archive/1976/noaa/NOAA_1_1976073100_1.gif


 


Originally Posted by: yorkshirelad89 


Indeed. The midday GEFS update isn't conclusive either. IMO there continue to be signs of an improvement as we head through the first week of July.



Brian Gaze
Berkhamsted
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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan
Weathermac
23 June 2017 17:47:31


Ok I'll concede defeat now, it looks as though we will have a very unsettled end to June, it looks as though a low pressure system will form over the UK and deliver some cool weather.


Could be quite blustery at times too as the low pressure moves east and intensifies as it bumps into the hot air over the continent. Its uncertain as to whether this will be a prolonged cooler spell however.


Even the best Summers have their blips 

http://www.wetterzentrale.de/maps/archive/1976/noaa/NOAA_1_1976073100_1.gif


 


Originally Posted by: yorkshirelad89 


yes i made this point yesterday 1976 had some cooler spells in fact barring the first week it was quite unsettled and didnt really improve until the end of july with august being hot and sunny so there is hope yet.


the models are showing cool unsettled conditions for about 10 days but a lot can change and quickly.

briggsy6
23 June 2017 18:26:53

Every summer is a mix of good (HP dominated) and bad weather. What makes a "good summer" is that the warm, settled spells outnumber the unsettled spells. And the more heavily they outweigh the bad spells determines how much it sticks in our memory as an exceptional summer.


Location: Uxbridge
Sevendust
23 June 2017 19:13:54


Every summer is a mix of good (HP dominated) and bad weather. What makes a "good summer" is that the warm, settled spells outnumber the unsettled spells. And the more heavily they outweigh the bad spells determines how much it sticks in our memory as an exceptional summer.


Originally Posted by: briggsy6 


Looks more average than cool to me and occasionally warm in the south. Plume storms possible later Monday/Tuesday

Saint Snow
23 June 2017 20:32:46


Every summer is a mix of good (HP dominated) and bad weather. What makes a "good summer" is that the warm, settled spells outnumber the unsettled spells. And the more heavily they outweigh the bad spells determines how much it sticks in our memory as an exceptional summer.


Originally Posted by: briggsy6 


 


I think the nature, length & timing of warm, settled spells plays a big part, too.


If the whole of June & first two-thirds of July was a washout, but then late July & August was great with universally sunny, dry & warm days, then most of the summer would have been rubbish but most people would consider it a fantastic summer.


1) It happening all at once so people can plan days out/parties/BBQ's/breaks with some confidence


2) Taking place during the kids' school holidays


3) the longer great summer spells last, the more people remember them



Martin
Home: St Helens (26m asl) Work: Manchester (75m asl)
A TWO addict since 14/12/01
"How can wealth persuade poverty to use its political freedom to keep wealth in power? Here lies the whole art of Conservative politics."
Aneurin Bevan
some faraway beach
24 June 2017 08:08:26

Lots of scatter on the ECM 2-metre temperature ensemble as early as Tuesday, with forecast maximum temps ranging from 15C to 26C. With that degree of uncertainty that soon, who knows how July might turn out?



2 miles west of Taunton, 32 m asl, where "milder air moving in from the west" becomes SNOWMAGEDDON.
Well, two or three times a decade it does, anyway.
doctormog
24 June 2017 08:24:14
The average on that chart seems to be consistently below the LTA if I'm reading it correctly? I'm not sure the scatter is much more than normal (in fact, Tues/Wed aside it may be less).
some faraway beach
24 June 2017 08:43:28
Yes. The average maximum (yellow line) is consistently around 18 or 19C from the middle of next week onwards (suits me, but I'm no fan of heatwaves).

The point I was making about the big scatter on Tues/Wed was that if what happens then is so up-in-the-affair, then what follows from that synoptic situation must be too (e.g. the new month, 1st July, has maxes ranging from 14C to 24C). In other words, you couldn't really discount any of the more extreme outliers in FI.

(Just trying to kick-start the thread for the weekend - not looking for an argument here!)
2 miles west of Taunton, 32 m asl, where "milder air moving in from the west" becomes SNOWMAGEDDON.
Well, two or three times a decade it does, anyway.
yorkshirelad89
24 June 2017 09:23:42

Interesting to note that an increasing number of GFS members want to build pressure briefly to our immediate East which delays the cool air and could potentially turn our low into thundery one. Some of the ensemble members do actually become quite warm for Tuesday:

http://www.wetterzentrale.de/maps/GFSP05EU00_84_2.png

Others also become extremely wet in the east, P17 is the most extreme but not without support:

http://www.wetterzentrale.de/maps/GFSP17EU00_132_1.png

Anyone else think that the temperatures will gradually keep ticking upwards? Instead of a cool northerly spell I think there is a risk of a very wet humid spell in the UK as low pressure gets stuck and starts wrapping up some warm air around it.


I still think a cool northerly is the form horse later though, but its duration may be short especially if the Azores high ridges towards Spain again.


Hull
idj20
25 June 2017 12:44:27

 Looks like being a cluttered mess of embedded convective gunk over the bulk of the UK on Tuesday through to Thursday. Hopefully I shall pick up some much needed rain to revive my now parched looking lawn at this end of Kentshire. I think moist and steamy spring to mind.


The Meto fax for Wednesday highlights my thoughts . . .


Folkestone Harbour. 
TimS
  • TimS
  • Advanced Member
25 June 2017 20:18:42
The week after next is looking touch and go to me.

When there's a big pattern change, as there is next week, and the models show it reverting back to the old pattern after a while, I'm always sceptical. Sometimes it does, but sometimes the new pattern takes over.

Bad omens to look out for would include flattening of the jet next Friday and Saturday, some new mini troughs in the flow digging down into the UK early the following week etc. Good signs to look out for - on the 200hpa wind charts a strengthening of the arm of the jet heading up towards arctic Norway and Svalbard. At the moment the jet is showing itself bifurcated with the stronger arm heading down into Eastern Europe and keeping us close to troughs.
Brockley, South East London 30m asl
doctormog
25 June 2017 20:29:56
So the next week looks a bit rubbish for the time of year but with a bit of luck things might improve after that?
Notty
26 June 2017 06:55:33
Buchan Cold Spell Day 1 of 9 - interesting as the weather seems to be cooling down.
Notty
Pontypool, 132m asl
moomin75
26 June 2017 10:12:23

Good Lord I am looking forward to hearing the assessment of Richard in Aberdeen if this verifies tomorrow. Maximum temp of 7c and heavy rain in Aberdeen and progged just 36 hours away. Richard could have good reason to moan if THIS verifies.


 


http://old.wetterzentrale.de/pics/Rtavn3617.gif



http://old.wetterzentrale.de/pics/Rtavn364.gif


 


In fact if this is anywhere near the mark you can't rule out snow over the highest ground in the highlands.


Witney, Oxfordshire
100m ASL
Gooner
26 June 2017 12:51:32

Looks like several days of unsettled weather coming up


Remember anything after T120 is really Just For Fun



Marcus
Banbury
North Oxfordshire
378 feet A S L


picturesareme
26 June 2017 13:32:20

This looks pretty warm and humid..


 


http://old.wetterzentrale.de/pics/Recm1922.html


 


Why no mentions?

Brian Gaze
26 June 2017 13:40:07

Unsettled this week. GEFS6z looks mediocre in the longer term too. Once we get beyond the next few days it doesn't look like a washout, but equally not something to plan your UK holiday by! Temps look quite close to the average next week, possibly warmer in the south and cooler in the north. Typical English wicket.



Brian Gaze
Berkhamsted
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"I'm not socialist, I know that. I don't believe in sharing my money." - Gary Numan

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